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本文系统推导了准一维喷管内的无量纲辐射-流动耦合控制方程,确定了喷管内辐射对流动特性的影响程度取决于Bo数,并分析了其物理内涵。在此基础上,本文分别采用MacCormack格式和蒙特卡罗算法耦合计算了喷管内不同Bo数下的流动特性,结果表明,除马赫数和压强外,其它流场特性参数对Bo数都比较敏感,Bo数越小,辐射影响程度越大。
In this paper, the non-dimensional radiative-flow-coupled governing equations in a quasi-one-dimensional nozzle are systematically deduced. It is determined that the influence of radiation on the flow characteristics depends on the number of Bo and its physical connotation. On this basis, the flow characteristics under different Bo numbers in the nozzle are calculated using the MacCormack format and the Monte Carlo method, respectively. The results show that all the flow field parameters are sensitive to the Bo numbers except Mach number and pressure, The smaller the Bo number, the greater the impact of radiation.