Kun WU, Yu AO, Yuting JIANG, Jianwen LIU, Xuejun FAN

DOI Number: XXX-YYY-ZZZ

Conference number: HiSST 2024- 0078

Computational fluid dynamics approach has become a crucial part of the design and study of modern high-speed space vehicles in recent years. In this work, a transient three-dimensional nonequilibrium CFD solver HiSCFOAM-NonE is developed in OpenFOAM platform to accomplish the computation of hypervelocity reacting flows involved in high Mach number scramjet engines. Based on the theory of thermo-chemical nonequilibrium flows and the compressible solver rhoCentralFoam in OpenFOAM, this solver is designed to broaden the capability of the present CFD simulations by incorporating a two-temperature model which describes the nonequilibrium energy relaxation. In this regard, this solver is capable of simulating thermo-chemical nonequilibrium flows in scramjets operating in wide flight Mach numbers up to 15. Compared to the currently available open-source solvers, the HiSCFOAM-NonE solver is more robust and efficient by virtue of the introduction of the Mutation++ nonequilibrium thermodynamic package. The validity of this solver is evaluated by a set of elementary tests including zero-dimensional heat bath, high Mach number cylinder flow as well as complex shock-dominated flow in a model scramjet engine. Results show satisfactory accuracy compared to the currently available experimental data.

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In Categories: 1.Events, High-Speed Aerodynamics and Aerothermodynamics, HiSST 2024
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