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Adriana Enache is a PhD student at Universitè Libre de Bruxelles and von Karman Institute for Fluid Dynamics. Her doctoral research investigates the de-icing phenomena of airfoils, with a focus on the ice shedding mechanism and runback ice formation. Her research employs both experimental techniques and mathematical modeling of the studied phenomena and is funded with an FNRS-FRIA fellowship. She completed the Research Master with honors at the von Karman Institute in 2017, and she holds an Engineering degree in Power Engineering from the University Politehnica of Bucharest, obtained in 2016.
Atmospheric in-flight icing on unmanned aerial vehicles (UAVs) is a significant hazard. UAVs that are not equipped with ice protection systems are usually limited to operations within visual line of sight or to weather conditions without icing risk. As many military and commercial UAV missions require flights beyond visual line of sight and into adverse weather conditions, energy-efficient ice protection systems are required. In this experimental study, two electro-thermal ice protection systems for fixed-wing UAVs were tested. One system was operated in anti-icing and de-icing mode, and the other system was designed as a parting strip de-icing system. Experiments were conducted in an icing wind tunnel facility for varying icing conditions at low Reynolds numbers. A parametric study over the ice shedding time was used to identify the most energy-efficient operation mode. The results showed that longer intercycle durations led to higher efficiencies and that de-icing with a parting strip was superior compared to anti-icing and de-icing without a parting strip. These findings are relevant for the development of energy-efficient systems in the future.
Richard Hann; Adriana Enache; Mikkel Nielsen; Bård Stovner; Jeroen van Beeck; Tor Johansen; Kasper Borup. Experimental Heat Loads for Electrothermal Anti-Icing and De-Icing on UAVs. Aerospace 2021, 8, 83 .
AMA StyleRichard Hann, Adriana Enache, Mikkel Nielsen, Bård Stovner, Jeroen van Beeck, Tor Johansen, Kasper Borup. Experimental Heat Loads for Electrothermal Anti-Icing and De-Icing on UAVs. Aerospace. 2021; 8 (3):83.
Chicago/Turabian StyleRichard Hann; Adriana Enache; Mikkel Nielsen; Bård Stovner; Jeroen van Beeck; Tor Johansen; Kasper Borup. 2021. "Experimental Heat Loads for Electrothermal Anti-Icing and De-Icing on UAVs." Aerospace 8, no. 3: 83.
Although ice shedding generates safety hazards in multiple industries, the phenomenon remains the main de-icing mechanism employed by the popular electro-thermal ice protection systems (ETIPS). To improve the technique’s ice removal capability and minimize its energy consumption, an experimental and numerical investigation of ice shedding produced by ETIPS in de-icing configuration is presented in this paper. An experimental campaign conducted in the von Karman Institute’s (VKI) icing wind tunnel (IWT) shows several ice detachment mechanisms. A one-dimensional phase change solver is developed and used to conduct complementary ice melting simulations. Coupled numerical and experimental results are used to determine the most important ice shedding parameters. Particularly, an ice shedding threshold value of the melted layer thickness produced at the heated surface-ice interface is observed.
Adriana Enache; Bruno Bernay; Gertjan Glabeke; Philippe Planquart; Jeroen Van Beeck. Ice Shedding Phenomenon: an Experimental and Numerical Investigation. AIAA AVIATION 2020 FORUM 2020, 1 .
AMA StyleAdriana Enache, Bruno Bernay, Gertjan Glabeke, Philippe Planquart, Jeroen Van Beeck. Ice Shedding Phenomenon: an Experimental and Numerical Investigation. AIAA AVIATION 2020 FORUM. 2020; ():1.
Chicago/Turabian StyleAdriana Enache; Bruno Bernay; Gertjan Glabeke; Philippe Planquart; Jeroen Van Beeck. 2020. "Ice Shedding Phenomenon: an Experimental and Numerical Investigation." AIAA AVIATION 2020 FORUM , no. : 1.
This paper presents an experimental characterization of the jet wiping process, used in continuous coating applications to control the thickness of a liquid coat using an impinging gas jet. Time Resolved Particle Image Velocimetry (TR-PIV) is used to characterize the impinging gas flow, while an automatic interface detection algorithm is developed to track the liquid interface at the impact. The study of the flow interaction is combined with time resolved 3D thickness measurements of the liquid film remaining after the wiping, via Time Resolved Light Absorption (TR-LAbs). The simultaneous frequency analysis of liquid and gas flows allows to correlate their respective instability, provide an experimental data set for the validation of numerical studies and allows for formulating a working hypothesis on the origin of the coat non-uniformity encountered in many jet wiping processes.
Miguel Alfonso Mendez; Adriana Enache; Anne Gosset; Jean-Marie Buchlin. Experimental Characterization of the Jet Wiping Process. EPJ Web of Conferences 2018, 180, 02064 .
AMA StyleMiguel Alfonso Mendez, Adriana Enache, Anne Gosset, Jean-Marie Buchlin. Experimental Characterization of the Jet Wiping Process. EPJ Web of Conferences. 2018; 180 ():02064.
Chicago/Turabian StyleMiguel Alfonso Mendez; Adriana Enache; Anne Gosset; Jean-Marie Buchlin. 2018. "Experimental Characterization of the Jet Wiping Process." EPJ Web of Conferences 180, no. : 02064.
This paper presents an experimental, a numerical and a theoretical analysis of the performances of a fluidic vectoring device for controlling the direction of a turbulent, bi-dimensional and low Mach number (incompressible) jet flow. The investigated design is the co-flow secondary injection with Coanda surface, which allows for vectoring angles up to 25° with no need of moving mechanical parts. A simple empirical model of the vectoring process is presented and validated via experimental and numerical data. The experiments consist of flow visualization and image processing for the automatic detection of the jet centerline; the numerical simulations are carried out solving the Unsteady Reynolds Average Navier- Stokes (URANS) closed with the k - ω SST turbulence model, using the PisoFoam solver from OpenFOAM. The experimental validation on three different geometrical configurations has shown that the model is capable of providing a fast and reliable evaluation of the device performance as a function of the operating conditions.
Miguel Alfonso Mendez; Maria Teresa Scelzo; Adriana Enache; Jean-Marie Buchlin. Fluidic Vectoring of a Planar Incompressible Jet Flow. EPJ Web of Conferences 2018, 180, 02065 .
AMA StyleMiguel Alfonso Mendez, Maria Teresa Scelzo, Adriana Enache, Jean-Marie Buchlin. Fluidic Vectoring of a Planar Incompressible Jet Flow. EPJ Web of Conferences. 2018; 180 ():02065.
Chicago/Turabian StyleMiguel Alfonso Mendez; Maria Teresa Scelzo; Adriana Enache; Jean-Marie Buchlin. 2018. "Fluidic Vectoring of a Planar Incompressible Jet Flow." EPJ Web of Conferences 180, no. : 02065.