【摘要】 <正> 在湍流流场的数值计算中,应用壁函数方法或称壁面律方法处理近壁区的流动已经证明是一种行之有效的方法,这可以减少壁面附近区域的计算工作量。在叶轮机械的流动计算中,常采用克罗柯形式的方程组,这里包含了焓与熵的计算。速度的壁面律已有许多人论述过,焓与熵的壁面律很少有人提及,而熵壁面律的概念首次由本文作者提出。更多还原

【Abstract】 Enthalpy (or Temperature) and entropy wall functions on thermal insulation boundary are first time derived on the basis of boundary layer equations of compressible turbulence. The influ-ence of Prandtl number on the functions are considered. Enthalpy, temperature and entropy are decreasing when Pr increases, and the results calculated by this paper’s formula in internal layer flow are agreeable with practical physic phenomena. The wall functions obtained by this paper could be used in the numerical computation of compressible turbulence in near wall area.更多还原