This page has only limited features, please log in for full access.

Prof. Ray-Yeng Yang
Professor

Basic Info


Research Keywords & Expertise

0 Ocean Engineering
0 Offshore Engineering
0 coastal erosion
0 Physical simulation experiment
0 Coastal aquaculture

Fingerprints

Coastal aquaculture

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 28 April 2021 in Ocean Engineering
Reads 0
Downloads 0

In this study, a floating barge moon pool platform model equipped with an NREL 5 MW wind turbine and mooring systems was numerically and experimentally tested under wave and wind loads to analyze the hydrodynamic performance and stability of the barge platform and the mooring system in a 50 m water depth condition. The numerical model was based on ANSYS AQWA, and this hydrodynamic model included nonlinear hydrostatic and Froude–Krylov forces, diffraction/radiation forces obtained from the linear potential theory, and Morison forces to consider viscous effects on the heave plates. The experiment model was a 1:64 scaled barge platform with an NREL 5 MW wind turbine scaled in the same ratio. Both full coupling platform were simulated under three conditions, namely free decay test, regular wave test, and irregular wave test, including a typhoon extreme case, with wind operation and parking. First, the hydrodynamic model was calibrated against the free decay test results. Consequently, a good agreement was achieved by calibrating the mooring properties of the experiment model. A comparison of the regular wave cases was then performed, with the same trend of results observed for the surge, heave, and pitch motions of the floating barge system. Finally, irregular model tests, which aimed to measure the dynamics of the barge platform and the mooring system in a 50-year sea state in Taiwan offshore, were conducted. The motion responses of the barge platform and the mooring tensions were recorded and compared with full coupled dynamic analysis results. The DNV GL standards were used to check the reliability of the mooring system and the stability of the barge platform.

ACS Style

Tzu-Ching Chuang; Wen-Hsuan Yang; Ray-Yeng Yang. Experimental and numerical study of a barge-type FOWT platform under wind and wave load. Ocean Engineering 2021, 230, 109015 .

AMA Style

Tzu-Ching Chuang, Wen-Hsuan Yang, Ray-Yeng Yang. Experimental and numerical study of a barge-type FOWT platform under wind and wave load. Ocean Engineering. 2021; 230 ():109015.

Chicago/Turabian Style

Tzu-Ching Chuang; Wen-Hsuan Yang; Ray-Yeng Yang. 2021. "Experimental and numerical study of a barge-type FOWT platform under wind and wave load." Ocean Engineering 230, no. : 109015.

Journal article
Published: 12 April 2021 in Journal of Marine Science and Engineering
Reads 0
Downloads 0

The objective of this paper was to present the modeling and optimization of mooring lines for floating offshore wind turbines (FOWT) located in various water depths from 50 m to 100 m in Taiwan western offshore areas. A semi-submersible floating wind turbine system is considered based on Offshore Code Comparison Collaborative Continuation (OC4) DeepCwind platform with the National Renewable Energy Laboratory (NREL) offshore 5-MW baseline wind turbine. The mooring lines proposed consist of a catenary mooring with studless chains. Three nominal sizes of the mooring chain links are taken into account with diameters of 95 mm, 115 mm and 135 mm. According to this configuration, a total of five mooring designs for different water depths (i.e., 50 m, 60 m, 70 m, 80 m, 100 m) are analyzed according to the rules and regulations of the two certification institutions, Det Norske Veritas (DNV) and American Petroleum Institute (API). Considering ultimate limit state (ULS), fatigue limit state (FLS) and maximum operating sea state (MOSS) based on a typhoon with a 50-year return period and current with a 10-year return period, 25-year design life, as well as 1-year return period, respectively, long-term predictions of breaking strength, fatigue and stability are performed. The software OrcaFlex version 10.3 d is used to simulate and design the mooring lines. The obtained results show that the shallow mooring design of 50 m water depth case presents the heaviest chains among the other water depths, increasing their mooring costs. On the other hand, the 100 m water design has much longer mooring lines, making this parameter the cost driving one. Thus, the minimum mooring cost range is from 60 m to 80 m water depth.

ACS Style

Wei-Hua Huang; Ray-Yeng Yang. Water Depth Variation Influence on the Mooring Line Design for FOWT within Shallow Water Region. Journal of Marine Science and Engineering 2021, 9, 409 .

AMA Style

Wei-Hua Huang, Ray-Yeng Yang. Water Depth Variation Influence on the Mooring Line Design for FOWT within Shallow Water Region. Journal of Marine Science and Engineering. 2021; 9 (4):409.

Chicago/Turabian Style

Wei-Hua Huang; Ray-Yeng Yang. 2021. "Water Depth Variation Influence on the Mooring Line Design for FOWT within Shallow Water Region." Journal of Marine Science and Engineering 9, no. 4: 409.

Editorial
Published: 09 March 2021 in Journal of Marine Science and Engineering
Reads 0
Downloads 0

This Special Issue concentrates on the problems of interactions between water waves and ocean structures

ACS Style

Jaw-Fang Lee; Ray-Yeng Yang. Waves and Ocean Structures. Journal of Marine Science and Engineering 2021, 9, 305 .

AMA Style

Jaw-Fang Lee, Ray-Yeng Yang. Waves and Ocean Structures. Journal of Marine Science and Engineering. 2021; 9 (3):305.

Chicago/Turabian Style

Jaw-Fang Lee; Ray-Yeng Yang. 2021. "Waves and Ocean Structures." Journal of Marine Science and Engineering 9, no. 3: 305.

Journal article
Published: 30 December 2020 in Sensors
Reads 0
Downloads 0

In this paper, a piezoelectric wave-energy converter (PWEC), consisting of a buoy, a frequency up-conversion mechanism, and a piezoelectric power-generator component, is developed. The frequency up-conversion mechanism consists of a gear train and geared-linkage mechanism, which converted lower frequencies of wave motion into higher frequencies of mechanical motion. The slider had a six-period displacement compared to the wave motion and was used to excite the piezoelectric power-generation component. Therefore, the operating frequency of the piezoelectric power-generation component was six times the frequency of the wave motion. The developed, flexible piezoelectric composite films of the generator component were used to generate electrical voltage. The piezoelectric film was composed of a copper/nickel foil as the substrate, lead–zirconium–titanium (PZT) material as the piezoelectric layer, and silver material as an upper-electrode layer. The sol-gel process was used to fabricate the PZT layer. The developed PWEC was tested in the wave flume at the Tainan Hydraulics Laboratory, Taiwan (THL). The maximum height and the minimum period were set to 100 mm and 1 s, respectively. The maximum voltage of the measured value was 2.8 V. The root-mean-square (RMS) voltage was 824 mV, which was measured through connection to an external 495 kΩ resistive load. The average electric power was 1.37 μW.

ACS Style

Shao-En Chen; Ray-Yeng Yang; Guang-Kai Wu; Chia-Che Wu. A Piezoelectric Wave-Energy Converter Equipped with a Geared-Linkage-Based Frequency Up-Conversion Mechanism. Sensors 2020, 21, 204 .

AMA Style

Shao-En Chen, Ray-Yeng Yang, Guang-Kai Wu, Chia-Che Wu. A Piezoelectric Wave-Energy Converter Equipped with a Geared-Linkage-Based Frequency Up-Conversion Mechanism. Sensors. 2020; 21 (1):204.

Chicago/Turabian Style

Shao-En Chen; Ray-Yeng Yang; Guang-Kai Wu; Chia-Che Wu. 2020. "A Piezoelectric Wave-Energy Converter Equipped with a Geared-Linkage-Based Frequency Up-Conversion Mechanism." Sensors 21, no. 1: 204.

Journal article
Published: 29 November 2020 in Journal of Mechanics
Reads 0
Downloads 0

This numerical simulation determines the wind loads on a stand-alone solar panel in a marine environment. The initial angle of tilt is 20° and 40° and the wind is incident at an angle of 0–180° (in increments of 45°). The wave angle affects the motion of a pontoon. For a wave angle of 0–180° (in increments of 45°), the variation in the surface pressure pattern and the lift coefficient with the angle of incidence of wind and waves in a single period is determined. The lift force is determined by competing the tilt angle for the upper surface with respect to wind and variation in roll angle for a specific wave angle. The data are pertinent to structural design for photovoltaic systems in a marine environment.

ACS Style

Kao-Chun Su; Ping-Han Chung; Ray-Yeng Yang. Numerical simulation of wind loads on an offshore PV panel: the effect of wave angle. Journal of Mechanics 2020, 37, 53 -62.

AMA Style

Kao-Chun Su, Ping-Han Chung, Ray-Yeng Yang. Numerical simulation of wind loads on an offshore PV panel: the effect of wave angle. Journal of Mechanics. 2020; 37 ():53-62.

Chicago/Turabian Style

Kao-Chun Su; Ping-Han Chung; Ray-Yeng Yang. 2020. "Numerical simulation of wind loads on an offshore PV panel: the effect of wave angle." Journal of Mechanics 37, no. : 53-62.

Journal article
Published: 28 September 2020 in Ocean Engineering
Reads 0
Downloads 0

In this study, the dynamic responses of a net-cage system were investigated through a time-domain numerical model based on the Morison equation and lumped-mass scheme. Then, the tension of the mooring lines and the motion of the net cage were studied after the failure of its mooring system. The results showed that the maximum tension in the remaining anchor increased, with large peak spectral values corresponding to the wave principal frequency and a lower frequency corresponding to the mooring force. Although additional sway, yaw, and roll motions of the cage were induced, the floating cage reached a new equilibrium position after several waves with a larger and stronger vibrating characteristic. With an increase in the current velocity, the tension ratio relative to that under the normal condition increased to 1.5. The trace of the cage after the failure showed that the longitudinal drift increased with the current velocity, whereas the lateral shift only reached a certain extent as it was constrained by lateral anchors. With the same number of cages attached, the mooring failure led to an increase in tension. As the number of cages increased, the maximum line tension also increased; however, the tension ratio remained almost constant. Finally, the safety factor of the mooring line tension for engineering applications was found to be substantially reduced after the failure.

ACS Style

Hung-Jie Tang; Po-Hung Yeh; Chai-Cheng Huang; Ray-Yeng Yang. Numerical study of the mooring system failure of aquaculture net cages under irregular waves and current. Ocean Engineering 2020, 216, 108110 .

AMA Style

Hung-Jie Tang, Po-Hung Yeh, Chai-Cheng Huang, Ray-Yeng Yang. Numerical study of the mooring system failure of aquaculture net cages under irregular waves and current. Ocean Engineering. 2020; 216 ():108110.

Chicago/Turabian Style

Hung-Jie Tang; Po-Hung Yeh; Chai-Cheng Huang; Ray-Yeng Yang. 2020. "Numerical study of the mooring system failure of aquaculture net cages under irregular waves and current." Ocean Engineering 216, no. : 108110.

Journal article
Published: 29 July 2020 in Journal of Marine Science and Engineering
Reads 0
Downloads 0

Flexible plates or membranes located on the sea surface can be effective for attenuation waves approaching the beach. The most efficient structures should be found through comprehensive research using developed experiments and theory. Our experimental work was focused on the wave propagation and attenuation passing through floating elastic structures. The experiments were conducted at the wave flume of Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan. The experiment mainly analyzes the reflection coefficient, transmission coefficient and energy loss of the regular wave of intermediate water depth after passing through the elastic structure under different wave steepness and other different wave conditions. Our experiments also explore the comparison of energy dissipation effects and the differences in motion characteristics between different elastic plates and different plate fixing methods. Three elastic materials were tested in the experiments: Latex, cool cotton and polyvinyl chloride (PVC). A model of a thin elastic plate covering the sea surface was used to evaluate the effectiveness of the structure of the wave barrier. The results of experiments carried out in the wave flume were compared with theoretical predictions in a wide range of generated waves.

ACS Style

Igor Shugan; Ray-Yeng Yang; Yang-Yih Chen. An Experimental and Theoretical Study of Wave Damping due to the Elastic Coating of the Sea Surface. Journal of Marine Science and Engineering 2020, 8, 571 .

AMA Style

Igor Shugan, Ray-Yeng Yang, Yang-Yih Chen. An Experimental and Theoretical Study of Wave Damping due to the Elastic Coating of the Sea Surface. Journal of Marine Science and Engineering. 2020; 8 (8):571.

Chicago/Turabian Style

Igor Shugan; Ray-Yeng Yang; Yang-Yih Chen. 2020. "An Experimental and Theoretical Study of Wave Damping due to the Elastic Coating of the Sea Surface." Journal of Marine Science and Engineering 8, no. 8: 571.

Journal article
Published: 12 May 2020 in Journal of Marine Science and Engineering
Reads 0
Downloads 0

This study aims to investigate the influence of fishnet mesh size on a floating platform. A self-developed, time-domain numerical model was used for the evaluation. This model is based on potential flow theory, uses the boundary element method (BEM) to solve nonlinear wave-body interactions, and applies the Morison equation to calculate the hydrodynamic forces exerted on fishnets. The mooring system is treated as a linear and symmetric spring. The results near the resonant frequency of the platform indicate that the smaller the fishnet mesh size, the lower the heave, pitch, and sea-side tension response amplitude operators (RAOs), but the higher the reflection coefficient. The results in the lower frequency region reveal that the smaller the fishnet mesh size, the lower the surge and heave RAOs, but the higher the pitch and tension RAOs. Meanwhile, the time-domain results at the resonant frequency of heave motion are shown to indicate the influences of a platform with various fishnets mesh sizes on the rigid body motion, mooring line tension, and transmitted wave heights. In addition, a comparison of nonlinear effects indicates that, after reducing the fishnet mesh size, the second-order RAOs of heave, pitch, and sea-side tension decrease, but the changes are minor against the first-order results.

ACS Style

Hung-Jie Tang; Chai-Cheng Huang; Ray-Yeng Yang. Numerical Study of the Influence of Fishnet Mesh Size on a Floating Platform. Journal of Marine Science and Engineering 2020, 8, 343 .

AMA Style

Hung-Jie Tang, Chai-Cheng Huang, Ray-Yeng Yang. Numerical Study of the Influence of Fishnet Mesh Size on a Floating Platform. Journal of Marine Science and Engineering. 2020; 8 (5):343.

Chicago/Turabian Style

Hung-Jie Tang; Chai-Cheng Huang; Ray-Yeng Yang. 2020. "Numerical Study of the Influence of Fishnet Mesh Size on a Floating Platform." Journal of Marine Science and Engineering 8, no. 5: 343.

Journal article
Published: 17 June 2019 in Applied Sciences
Reads 0
Downloads 0

This study experimentally determines the wind loads on a stand-alone solar array (length-to-width ratio of 0.19; 1/10-scale commercial modules). The freestream velocity in a uniform flow is 14.5 ± 0.1 m/s, and the turbulence intensity is 0.3%. The angle of tilt ranges from 10° to 80° and the wind is incident at angle of 0°–180°. Mean surface pressure measurements on the upper and the lower surface of the inclined solar panels are used to calculate the lift coefficient. For the angle of incidence of 0°–60° for the wind, the variation in the lift coefficient with the angle of tilt is U-shaped. The formation of a strong windward corner vortex results in greater lift force on the right half of the inclined plate for the angle of incidence of 30°–45° for the wind.

ACS Style

Ping-Han Chung; Chin-Cheng Chou; Ray-Yeng Yang; Cheng-Yang Chung. Wind Loads on a PV Array. Applied Sciences 2019, 9, 2466 .

AMA Style

Ping-Han Chung, Chin-Cheng Chou, Ray-Yeng Yang, Cheng-Yang Chung. Wind Loads on a PV Array. Applied Sciences. 2019; 9 (12):2466.

Chicago/Turabian Style

Ping-Han Chung; Chin-Cheng Chou; Ray-Yeng Yang; Cheng-Yang Chung. 2019. "Wind Loads on a PV Array." Applied Sciences 9, no. 12: 2466.

Journal article
Published: 17 April 2019 in Applied Sciences
Reads 0
Downloads 0

A solar photovoltaic system consists of tilted panels and is prone to extreme wind loads during hurricanes or typhoons. To ensure the proper functioning of the system, it is important to determine its aerodynamic characteristics. Offshore photovoltaic (PV) systems have been developed in recent years. Wind loads are associated with wind, wave climates, and tidal regimes. In this study, the orientation of a single panel is adjusted to different angles of tilt (10°–80°) and angles of incidence for wind (0°–180°) that are pertinent to offshore PV panels. The critical wind loads on a tilted panel are observed at lower angles of incidence for the wind, when the angle of tilt for the panel is greater than 30°.

ACS Style

Chin-Cheng Chou; Ping-Han Chung; Ray-Yeng Yang. Wind Loads on a Solar Panel at High Tilt Angles. Applied Sciences 2019, 9, 1594 .

AMA Style

Chin-Cheng Chou, Ping-Han Chung, Ray-Yeng Yang. Wind Loads on a Solar Panel at High Tilt Angles. Applied Sciences. 2019; 9 (8):1594.

Chicago/Turabian Style

Chin-Cheng Chou; Ping-Han Chung; Ray-Yeng Yang. 2019. "Wind Loads on a Solar Panel at High Tilt Angles." Applied Sciences 9, no. 8: 1594.

Journal article
Published: 15 February 2019 in Journal of Offshore Mechanics and Arctic Engineering
Reads 0
Downloads 0

The aim of this paper is to establish a simple approach to experimentally study the mooring line damping in shallow water, where snap loading may occur more frequently. Experimental measurements were conducted in a wave basin at a scale of 1:50, which corresponds to a full scale of 28 m water depth. A chain made by stainless steel was used, and the tension force at the fairlead was measured by tension gages. Moreover, the line geometry, touchdown point speed, and mooring line velocity were derived from image processing techniques. Surge motions at fairlead were driven from a programmable wavemaker. Regular surge motions with different frequencies and pretensions were tested in this system in order to investigate the quasi-static and dynamic behaviors of the mooring chain. In the quasi-static test, the mooring line keeps a typical catenary shape, and its indicator diagram exhibits a smooth-closed curve. In the dynamic test, the mooring line is fully lifted from the seabed, and it cyclically goes through the stage of semitaut and fully taut. We successfully reproduced a snap event in the laboratory scale, and the resulting mooring line damping can considerably increase in this manner. Two criteria for snap event were examined, and both of them were verified by the experiments.

ACS Style

Wen-Yang Hsu; Tzu-Ching Chuang; Ray-Yeng Yang; Wei-Ting Hsu; Krish P. Thiagarajan. An Experimental Study of Mooring Line Damping and Snap Load in Shallow Water. Journal of Offshore Mechanics and Arctic Engineering 2019, 141, 051603 .

AMA Style

Wen-Yang Hsu, Tzu-Ching Chuang, Ray-Yeng Yang, Wei-Ting Hsu, Krish P. Thiagarajan. An Experimental Study of Mooring Line Damping and Snap Load in Shallow Water. Journal of Offshore Mechanics and Arctic Engineering. 2019; 141 (5):051603.

Chicago/Turabian Style

Wen-Yang Hsu; Tzu-Ching Chuang; Ray-Yeng Yang; Wei-Ting Hsu; Krish P. Thiagarajan. 2019. "An Experimental Study of Mooring Line Damping and Snap Load in Shallow Water." Journal of Offshore Mechanics and Arctic Engineering 141, no. 5: 051603.

Journal article
Published: 01 January 2018 in Terrestrial, Atmospheric and Oceanic Sciences
Reads 0
Downloads 0

Friction in shear zone can generate much heat there Heating in the shear zone activates thermopressurization and thermal softening mechanisms Combinin...

ACS Style

Wen-Yau Chen; Ray-Yeng Yang; Hwung-Hweng Hwung. Frictional heating lubrication for submarine landslide. Terrestrial, Atmospheric and Oceanic Sciences 2018, 29, 87 -103.

AMA Style

Wen-Yau Chen, Ray-Yeng Yang, Hwung-Hweng Hwung. Frictional heating lubrication for submarine landslide. Terrestrial, Atmospheric and Oceanic Sciences. 2018; 29 (1):87-103.

Chicago/Turabian Style

Wen-Yau Chen; Ray-Yeng Yang; Hwung-Hweng Hwung. 2018. "Frictional heating lubrication for submarine landslide." Terrestrial, Atmospheric and Oceanic Sciences 29, no. 1: 87-103.

Journal article
Published: 01 March 2015 in Journal of Hydro-environment Research
Reads 0
Downloads 0
ACS Style

Han-Lun Wu; Shih-Chun Hsiao; Wen-Yang Hsu; Ray-Yeng Yang; Hwung-Hweng Hwung. Dynamic response of density-stratified fluid in a submarine rectangular trench. Journal of Hydro-environment Research 2015, 9, 61 -80.

AMA Style

Han-Lun Wu, Shih-Chun Hsiao, Wen-Yang Hsu, Ray-Yeng Yang, Hwung-Hweng Hwung. Dynamic response of density-stratified fluid in a submarine rectangular trench. Journal of Hydro-environment Research. 2015; 9 (1):61-80.

Chicago/Turabian Style

Han-Lun Wu; Shih-Chun Hsiao; Wen-Yang Hsu; Ray-Yeng Yang; Hwung-Hweng Hwung. 2015. "Dynamic response of density-stratified fluid in a submarine rectangular trench." Journal of Hydro-environment Research 9, no. 1: 61-80.

Journal article
Published: 27 February 2015 in Energies
Reads 0
Downloads 0

It is of great importance and urgency for Taiwan to develop offshore wind power. However, relevant data on offshore wind energy resources are limited. This study imported wind speeds measured by a tidal station and a buoy into the software WAsP to estimate the high-altitude wind speeds in the two areas. A light detection and ranging (Lidar) system was set up near the tidal station and buoy. High-altitude wind speeds measured by the Lidar system were compared with the WAsP-estimated values, and it was discovered that the two data sets were consistent. Then, long-term wind speed data observed by buoys and tidal stations at various locations were imported into WAsP to forecast wind speeds at heights of 55–200 m on the west coast of Taiwan. The software WAsP Engineering was used to analyze the extreme wind speeds in the same areas. The results show that wind speeds at 100 m are approximately 9.32–11.24 m/s, which means that the coastal areas of west Taiwan are rich in wind energy resources. When a long-term 10-min average wind speed is used, the extreme wind speed on the west coast is estimated to be between 36.4 and 55.3 m/s.

ACS Style

Pei-Chi Chang; Ray-Yeng Yang; Chi-Ming Lai. Potential of Offshore Wind Energy and Extreme Wind Speed Forecasting on the West Coast of Taiwan. Energies 2015, 8, 1685 -1700.

AMA Style

Pei-Chi Chang, Ray-Yeng Yang, Chi-Ming Lai. Potential of Offshore Wind Energy and Extreme Wind Speed Forecasting on the West Coast of Taiwan. Energies. 2015; 8 (3):1685-1700.

Chicago/Turabian Style

Pei-Chi Chang; Ray-Yeng Yang; Chi-Ming Lai. 2015. "Potential of Offshore Wind Energy and Extreme Wind Speed Forecasting on the West Coast of Taiwan." Energies 8, no. 3: 1685-1700.

Conference paper
Published: 28 October 2014 in Coastal Engineering Proceedings
Reads 0
Downloads 0
ACS Style

Jing-Bo Hung; Wen-Yang Hsu; Pei-Chi Chang; Ray-Yeng Yang; Ta-Hui Lin. THE PERFORMANCE VALIDATION AND OPERATION OF NEARSHORE WIND MEASUREMENTS USING THE FLOATING LIDAR. Coastal Engineering Proceedings 2014, 1, 11 .

AMA Style

Jing-Bo Hung, Wen-Yang Hsu, Pei-Chi Chang, Ray-Yeng Yang, Ta-Hui Lin. THE PERFORMANCE VALIDATION AND OPERATION OF NEARSHORE WIND MEASUREMENTS USING THE FLOATING LIDAR. Coastal Engineering Proceedings. 2014; 1 (34):11.

Chicago/Turabian Style

Jing-Bo Hung; Wen-Yang Hsu; Pei-Chi Chang; Ray-Yeng Yang; Ta-Hui Lin. 2014. "THE PERFORMANCE VALIDATION AND OPERATION OF NEARSHORE WIND MEASUREMENTS USING THE FLOATING LIDAR." Coastal Engineering Proceedings 1, no. 34: 11.

Conference paper
Published: 26 October 2014 in Coastal Engineering Proceedings
Reads 0
Downloads 0

Wave modulation due to Bengamin Feir Instability (BFI) in the presence of long wave (swell) is investigated in the elaborate experiments. The mechanically generated waves are composed of three discrete waves; while the newly generated harmonics due to BFI still combining into discrete spectra with the same frequency difference step. These stable discrete waves allow us to further examine the basic properties of nonlinear wave-wave interactions, such as the variation of phase speeds and wave numbers along the wave tank together with speed of crests, especial for the large transient waves. The measured values have a reasonable correspondence to the available nonlinear model estimations. The technique proposed in this study is verified to accurately measure the phase speed and wave number of each harmonic in the wave group. Phase speeds of short waves have a significant amplification in the vicinity of big transient waves, while the speeds of longer waves are close to linear values. The relative long wave (storm wave) travelling with short waves (wind waves) dramatically change the local kurtosis and skewness and may have an important role for the generation of large transient wave and provide an opportunity for triggering the freak waves.

ACS Style

Wen-Yang Hsu; Igor Shugan; Wen-Son Chiang; Ray-Yeng Yang; Hwung-Hweng Hwung; Sergey Kuznetsov; Yana Saprykina. AN EXPERIMENTAL STUDY ON NONLINEAR WAVE DYNAMICS: ROUGE WAVE GENERATION AND WAVE BLOCKING. Coastal Engineering Proceedings 2014, 1, 34 .

AMA Style

Wen-Yang Hsu, Igor Shugan, Wen-Son Chiang, Ray-Yeng Yang, Hwung-Hweng Hwung, Sergey Kuznetsov, Yana Saprykina. AN EXPERIMENTAL STUDY ON NONLINEAR WAVE DYNAMICS: ROUGE WAVE GENERATION AND WAVE BLOCKING. Coastal Engineering Proceedings. 2014; 1 (34):34.

Chicago/Turabian Style

Wen-Yang Hsu; Igor Shugan; Wen-Son Chiang; Ray-Yeng Yang; Hwung-Hweng Hwung; Sergey Kuznetsov; Yana Saprykina. 2014. "AN EXPERIMENTAL STUDY ON NONLINEAR WAVE DYNAMICS: ROUGE WAVE GENERATION AND WAVE BLOCKING." Coastal Engineering Proceedings 1, no. 34: 34.

Conference paper
Published: 26 October 2014 in Coastal Engineering Proceedings
Reads 0
Downloads 0
ACS Style

Hsin Hung Chen; Ray-Yeng Yang; Jian-Wei Li; Hwung-Hweng Hwung; Ta-Hui Lin; Ming-Chung Lin. STUDY ON MULTI-USE OF AN INTEGRATED OFFSHORE WIND TURBINE FOUNDATION AND COASTAL CAGE NET. Coastal Engineering Proceedings 2014, 1, 26 .

AMA Style

Hsin Hung Chen, Ray-Yeng Yang, Jian-Wei Li, Hwung-Hweng Hwung, Ta-Hui Lin, Ming-Chung Lin. STUDY ON MULTI-USE OF AN INTEGRATED OFFSHORE WIND TURBINE FOUNDATION AND COASTAL CAGE NET. Coastal Engineering Proceedings. 2014; 1 (34):26.

Chicago/Turabian Style

Hsin Hung Chen; Ray-Yeng Yang; Jian-Wei Li; Hwung-Hweng Hwung; Ta-Hui Lin; Ming-Chung Lin. 2014. "STUDY ON MULTI-USE OF AN INTEGRATED OFFSHORE WIND TURBINE FOUNDATION AND COASTAL CAGE NET." Coastal Engineering Proceedings 1, no. 34: 26.

Conference paper
Published: 26 October 2014 in Coastal Engineering Proceedings
Reads 0
Downloads 0
ACS Style

Ray-Yeng Yang; Li-An Kuo; Hwung-Hweng Hwung. COUNTERMEASURE STUDY TO PROTECT THE LARGEST OFFSHORE BARRIER ISLAND IN TAIWAN. Coastal Engineering Proceedings 2014, 1, 24 .

AMA Style

Ray-Yeng Yang, Li-An Kuo, Hwung-Hweng Hwung. COUNTERMEASURE STUDY TO PROTECT THE LARGEST OFFSHORE BARRIER ISLAND IN TAIWAN. Coastal Engineering Proceedings. 2014; 1 (34):24.

Chicago/Turabian Style

Ray-Yeng Yang; Li-An Kuo; Hwung-Hweng Hwung. 2014. "COUNTERMEASURE STUDY TO PROTECT THE LARGEST OFFSHORE BARRIER ISLAND IN TAIWAN." Coastal Engineering Proceedings 1, no. 34: 24.

Conference paper
Published: 26 October 2014 in Coastal Engineering Proceedings
Reads 0
Downloads 0
ACS Style

Igor Shugan; Yana Saprykina; Sergey Kuznetsov; Ray-Yeng Yang. FREQUENCY DOWNSHIFTING OF WAVE SPECTRA AND FORMATION OF FREAK WAVES ON NON-UNIFORM OPPOSING CURRENT. Coastal Engineering Proceedings 2014, 1, 24 .

AMA Style

Igor Shugan, Yana Saprykina, Sergey Kuznetsov, Ray-Yeng Yang. FREQUENCY DOWNSHIFTING OF WAVE SPECTRA AND FORMATION OF FREAK WAVES ON NON-UNIFORM OPPOSING CURRENT. Coastal Engineering Proceedings. 2014; 1 (34):24.

Chicago/Turabian Style

Igor Shugan; Yana Saprykina; Sergey Kuznetsov; Ray-Yeng Yang. 2014. "FREQUENCY DOWNSHIFTING OF WAVE SPECTRA AND FORMATION OF FREAK WAVES ON NON-UNIFORM OPPOSING CURRENT." Coastal Engineering Proceedings 1, no. 34: 24.

Journal article
Published: 02 July 2014 in Journal of Marine Science and Engineering
Reads 0
Downloads 0

Physical model tests with the scale of 1:36 are carried out in the Near-Shore Wave Basin (NSWB) at Tainan Hydraulics Laboratory (THL) with the jacket-type offshore wind turbine foundation (jacket-type foundation) and the combination of hard or soft scour protection in the test area. Scouring around the jacket-type foundation exposed to wave and current was conducted in the NSWB with a mobile bed experiment. Two locations (a water depth of 12 m and 16 m) of the foundations are separately simulated in this study. Based on the analysis from the former NSWB experimental results, one traditional hard scour protection usually used in Taiwan with four layers around the foundation is proposed for the mitigation of scouring. From the experimental results, a four-layer scour protection is tested and found to be effective in preventing scouring around the jacket-type foundation. Besides the hard scour protection countermeasure, the scour protection effect of an integrated offshore wind turbine and cage net aquaculture facility as a soft countermeasure for scour protection of the jacket-type foundation is further evaluated in this study. Meanwhile, a detailed analysis for stakeholders’ opinions on the integration of offshore wind farms and coastal aquaculture is also considered to obtain important experience and knowledge; and furthermore, to understand the real demand for adjusting the feasibility of this soft countermeasure.

ACS Style

Hsin-Hung Chen; Ray-Yeng Yang; Hwung-Hweng Hwung. Study of Hard and Soft Countermeasures for Scour Protection of the Jacket-Type Offshore Wind Turbine Foundation. Journal of Marine Science and Engineering 2014, 2, 551 -567.

AMA Style

Hsin-Hung Chen, Ray-Yeng Yang, Hwung-Hweng Hwung. Study of Hard and Soft Countermeasures for Scour Protection of the Jacket-Type Offshore Wind Turbine Foundation. Journal of Marine Science and Engineering. 2014; 2 (3):551-567.

Chicago/Turabian Style

Hsin-Hung Chen; Ray-Yeng Yang; Hwung-Hweng Hwung. 2014. "Study of Hard and Soft Countermeasures for Scour Protection of the Jacket-Type Offshore Wind Turbine Foundation." Journal of Marine Science and Engineering 2, no. 3: 551-567.