Behavior of two-temperature model in intermediate hypersonic regime
Behavior of two-temperature model in intermediate hypersonic regime
复制标题
中高超声速状态下双温模型的行为
DOI：
10.2514/2.6480
复制
发表时间：
1999
期刊：
影响因子：
--
通讯作者：
K. Sawada
中科院分区：
文献类型：
--
作者：
M. Furudate;S. Nonaka;K. Sawada
为了检验现有的双温模型在中高超声速流场中的性能，计算了球体的激波间隔距离。计算进行了三个二元标度参数值，对应于近冻结，非平衡，近平衡流，分别。得到的激波间隔距离进行了比较，在弹道范围内获得的实验数据。双温模型较好地再现了中间高超音速流中激波的间隔距离，但在发生振动激发而化学反应几乎冻结的情况下，往往失去其准确性
Shock standoff distance for a sphere is calculated to examine the behavior of the existing two-temperature model in the intermediate hypersonic flow regime. Calculations are carried out for three binary scaling parameter values, corresponding to nearly frozen, nonequilibrium, and nearly equilibrium flows, respectively. The obtained shock standoff distances are compared with the experimental data obtained in a ballistic range. The two temperature model reproduces the shock standoff distances in the intermediate hypersonic flows fairly well but tends to lose its accuracy where vibrational excitation occurs but chemical reactions are nearly frozen