Validation study of numerical simulations by comparison to measurements in piston-driven shock-tunnels |
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| Affiliation: | 1. Institut für Thermodynamik, Universität der Bundeswehr München, 85577 Neubiberg, Germany;2. Aerospace, Civil & Mechanical Engineering, University of New South Wales at the Australian Defence Force Academy, Canberra, Australia;3. Division of Mechanical Engineering, University of Queensland, Brisbane, Australia;4. Institut für Aerodynamik & Strömungstechnik, Deutsches Zentrum für Luft- und Raumfahrt, 37073 Göttingen, Germany;1. Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea;2. Agency for Defense Development, Daejeon 34186, Republic of Korea;1. School of Energy Science and Engineering, Harbin Institute of Technology, 150001 Heilongjiang, People’s Republic of China;2. Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, 150001 Heilongjiang, People’s Republic of China;1. Jiangsu Province Key Laboratory of Aerospace Power System, College of Energy & Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu 210016, People''s Republic of China;2. Xi''an Aerospace Propulsion Institute, Xi''an, Shanxi 710100, People''s Republic of China |
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| Abstract: | The simulation of high enthalpy flows, both experimentally and numerically, is a topic of international research efforts. It is important to understand and quantitatively describe the aerothermodynamic phenomena of high speed/high enthalpy flows in order to develop more capable reusable space transportation systems. A CFD-method is used here to model several piston driven shock tunnels used around the world to experimentally study re-entry and supersonic combustion phenomena. The results are compared to measured data (pressure and shock speed) of the various tunnels and shows that the approach is valid and is ideal for the development of new tunnel operating conditions and new tunnels. Using the numerical models, test facilities are compared to each other. For the medium enthalpy condition presented here, the tunnels produce similar test conditions, with the bigger ones having greater levels of nozzle supply pressure relative to the diaphragm rupture pressure, and greater test time. |
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