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- Title
真实气体非定常波系交互作用求解方法.
- Authors
李 陌 晗; 代 玉 强; 张 德 聪; 俞 宁
- Abstract
The real gas waves′ interaction effects are important in the design of wave machines, and the intersecting reflection between waves directly affects the working process of the equipment. At present, due to the lack of real gas unsteady wave theory, designers have to use the ideal gas model to make a preliminary estimate, and then make a correction by means of computational fluid dynamics (CFD) which consumes tremendous computing resources and time. Therefore, a solution method of the real gas unsteady waves′ interactions is built. Firstly, the calculation method for single wave crossing is presented. For shock waves, the Rankin-Hugoniot relationship is used to iterate the temperature behind the wave. For expansion waves, the Simpson formula is used to numerically integrate the Riemann invariant to solve the gas velocity behind the wave. Then, the calculation methods are provided for the interactions like encountering and reflecting processes among the simple waves and shock waves. The pressure and temperature comparisons between the results of calculation method and CFD simulation show the good consistency, and the proposed method has a clear superiority to CFD in time consuming.
- Subjects
REAL gases; COMPUTATIONAL fluid dynamics; SHOCK waves; IDEAL gases; MACHINE design
- Publication
Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao, 2023, Vol 63, Issue 4, p344
- ISSN
1000-8608
- Publication type
Article
- DOI
10.7511/dllgxb202304003