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Vincent Casseau
James Weir Fluids Laboratory, University of Strathclyde, Glasgow G1 1XJ, UK

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Journal article
Published: 14 December 2016 in Aerospace
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Hy2Foam is a newly-coded open-source two-temperature computational fluid dynamics (CFD) solver that has previously been validated for zero-dimensional test cases. It aims at (1) giving open-source access to a state-of-the-art hypersonic CFD solver to students and researchers; and (2) providing a foundation for a future hybrid CFD-DSMC (direct simulation Monte Carlo) code within the OpenFOAM framework. This paper focuses on the multi-dimensional verification of hy2Foam and firstly describes the different models implemented. In conjunction with employing the coupled vibration-dissociation-vibration (CVDV) chemistry–vibration model, novel use is made of the quantum-kinetic (QK) rates in a CFD solver. hy2Foam has been shown to produce results in good agreement with previously published data for a Mach 11 nitrogen flow over a blunted cone and with the dsmcFoam code for a Mach 20 cylinder flow for a binary reacting mixture. This latter case scenario provides a useful basis for other codes to compare against.

ACS Style

Vincent Casseau; Daniel E. R. Espinoza; Thomas J. Scanlon; Richard E. Brown. A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part Two: Multi-Dimensional Analysis. Aerospace 2016, 3, 45 .

AMA Style

Vincent Casseau, Daniel E. R. Espinoza, Thomas J. Scanlon, Richard E. Brown. A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part Two: Multi-Dimensional Analysis. Aerospace. 2016; 3 (4):45.

Chicago/Turabian Style

Vincent Casseau; Daniel E. R. Espinoza; Thomas J. Scanlon; Richard E. Brown. 2016. "A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part Two: Multi-Dimensional Analysis." Aerospace 3, no. 4: 45.

Journal article
Published: 18 October 2016 in Aerospace
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A two-temperature CFD (computational fluid dynamics) solver is a prerequisite to any spacecraft re-entry numerical study that aims at producing results with a satisfactory level of accuracy within realistic timescales. In this respect, a new two-temperature CFD solver, hy2Foam, has been developed within the framework of the open-source CFD platform OpenFOAM for the prediction of hypersonic reacting flows. This solver makes the distinct juncture between the trans-rotational and multiple vibrational-electronic temperatures. hy2Foam has the capability to model vibrational-translational and vibrational-vibrational energy exchanges in an eleven-species air mixture. It makes use of either the Park TTv model or the coupled vibration-dissociation-vibration (CVDV) model to handle chemistry-vibration coupling and it can simulate flows with or without electronic energy. Verification of the code for various zero-dimensional adiabatic heat baths of progressive complexity has been carried out. hy2Foam has been shown to produce results in good agreement with those given by the CFD code LeMANS (The Michigan Aerothermodynamic Navier-Stokes solver) and previously published data. A comparison is also performed with the open-source DSMC (direct simulation Monte Carlo) code dsmcFoam. It has been demonstrated that the use of the CVDV model and rates derived from Quantum-Kinetic theory promote a satisfactory consistency between the CFD and DSMC chemistry modules.

ACS Style

Vincent Casseau; Rodrigo C. Palharini; Thomas J. Scanlon; Richard E. Brown. A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part One: Zero-Dimensional Analysis. Aerospace 2016, 3, 34 .

AMA Style

Vincent Casseau, Rodrigo C. Palharini, Thomas J. Scanlon, Richard E. Brown. A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part One: Zero-Dimensional Analysis. Aerospace. 2016; 3 (4):34.

Chicago/Turabian Style

Vincent Casseau; Rodrigo C. Palharini; Thomas J. Scanlon; Richard E. Brown. 2016. "A Two-Temperature Open-Source CFD Model for Hypersonic Reacting Flows, Part One: Zero-Dimensional Analysis." Aerospace 3, no. 4: 34.

Conference paper
Published: 01 January 2016 in 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30
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Hypersonic hybrid hydrodynamic-molecular gas flow solvers are required to satisfy the two essential requirements of any high-speed reacting code, these being physical accuracy and computational efficiency. The James Weir Fluids Laboratory at the University of Strathclyde is currently developing an open-source hybrid code which will eventually reconcile the direct simulation Monte-Carlo method, making use of the OpenFOAM application called dsmcFoam, and the newly coded open-source two-temperature computational fluid dynamics solver named hy2Foam. In conjunction with employing the CVDV chemistry-vibration model in hy2Foam, novel use is made of the QK rates in a CFD solver. In this paper, further testing is performed, in particular with the CFD solver, to ensure its efficacy before considering more advanced test cases. The hy2Foam and dsmcFoam codes have shown to compare reasonably well, thus providing a useful basis for other codes to compare against.

ACS Style

V. Casseau; T. J. Scanlon; B. John; D. R. Emerson; R. E. Brown. Hypersonic simulations using open-source CFD and DSMC solvers. 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30 2016, 1786, 050006 .

AMA Style

V. Casseau, T. J. Scanlon, B. John, D. R. Emerson, R. E. Brown. Hypersonic simulations using open-source CFD and DSMC solvers. 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30. 2016; 1786 (1):050006.

Chicago/Turabian Style

V. Casseau; T. J. Scanlon; B. John; D. R. Emerson; R. E. Brown. 2016. "Hypersonic simulations using open-source CFD and DSMC solvers." 30TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS: RGD 30 1786, no. 1: 050006.