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建立了考虑摩擦阻力的一维水蒸气超音速流凝结数学模型,对喷管内含有不同初始浓度和半径的外界核心的水蒸气超音速流凝结过程进行了数值计算。结果发现:当外界核心浓度在不同范围内时,外界核心半径对凝结有不同的影响规律;当外界核心半径在不同范围内时,外界核心浓度对凝结也有不同的影响规律;为了促进凝结的发生,要选择匹配的外界核心平均半径和浓度。选定喷管出口的液相质量分数为标准,针对计算的几种情况得出:当外界核心半径为1.0×10~(-9)m,外界核心浓度为1.0×10~(14)kg~(-1)时,对应的喷管出口处的液相质量分数最大。
The mathematical model of supersonic flow condensation in one-dimensional water vapor considering frictional resistance was established, and the supersonic flow condensation process of water vapor in the outer core with different initial concentration and radius in the nozzle was numerically calculated. The results showed that when the external core concentration is in a different range, the external core radius has a different influence on the coagulation; when the external core radius is in a different range, the external core concentration also has a different influence on the coagulation; in order to promote the coagulation , To choose the outer radius of the core and the concentration of the match. When the outer core radius is 1.0 × 10 ~ (-9) m and the outer core concentration is 1.0 × 10 ~ (14) kg ~ (-1), the liquid mass fraction at the outlet of the selected nozzle is the standard. (-1), the mass fraction of the liquid phase at the outlet of the corresponding nozzle is the largest.