【摘要】 本文介绍了考虑汽流与喷管壁面之间的摩擦和用virial型状态方程描述水蒸汽热力性质的超音速膨胀湿蒸汽双相流动的求解方法及相应的计算程序,较之通常所用的将水蒸汽作为理想气体并且假设膨胀过程无摩擦的计算程序更加完善.用此程序对低压范围的Laval喷管流动进行了计算,所得结果与已有结果符合较好.更多还原

【Abstract】 A numerical method and the corresponding computer program for solving theoretical equations of supersonic wet steam expansion flow with consideration of flow friction and vitial correction for the equation of state is presented in this paper. Such a method is evidently more satisfactory than those ordinarily employed for the calculation of wet steam flow where the vapor is taken as an ideal gas and the expansion is supposed to be friction free. When it is used to calculate the wet steam flow in a low pressure Laval nozzle, the results obtained for the position of the Wilson point and wetness fraction agree quite well with existing experimental data.更多还原