In the numerical simulation of hypersonic chemical nonequilibrium flows, species density may become negative at the beginning of calculation, chemical stiffness is the main reason that affects the calculation's stability and convergence.
In the numerical simulation of hypersonic chemical nonequilibrium flows, species density may become negative at the beginning of calculation, chemical stiffness is the main reason that affects the calculation's stability and convergence.
摘要高超声速三维化学非平衡绕流流场的数值模拟中，在计算初期容易发生组元密度出现负值的非物理现象，另外源项的刚性是影响计算稳定性和收敛速度的主要原因。