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非等熵过程
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     Analysis of Unsteady and Non-isentropic Flow in the Comprex
     气波增压器中不定常等熵流的分析
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     LIFE SPAN OF SOLUTIONS TO NONISENTROPIC GAS DYNAMICS SYSTEMS
     等熵流气体动力学方程组解的生命跨度
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     Generalized Boolean Negation
     广义布尔
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     Bronze in Lijiashan
     主流的青铜
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     In the paper,the authors analyse the isentropic equations and the entropy limit equation of species is deduced.
     本文分析了等熵方程;
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Based on a comparison between and an analysis of the isentropic andnon-isentropic processes and according to the principle of entropy-incre-ment(ds>0),the distribution rule of the flow angle α along the circum-ferential angle (?) is founded in this paper.The velocity coefficient φ,theenergy loss coefficient ξ and the shape of stream line in relation to α arealso presented here.This is a distinguishing feature of the new method.By means of calculating an example,both the convenience and effectivenessof this new...

Based on a comparison between and an analysis of the isentropic andnon-isentropic processes and according to the principle of entropy-incre-ment(ds>0),the distribution rule of the flow angle α along the circum-ferential angle (?) is founded in this paper.The velocity coefficient φ,theenergy loss coefficient ξ and the shape of stream line in relation to α arealso presented here.This is a distinguishing feature of the new method.By means of calculating an example,both the convenience and effectivenessof this new method are demonstrated.

本文在等熵与非等熵过程对比分析的基础上,按熵增原理(ds>0)建立了气流角α沿周向角(?)之分布规律,并建立了气流角α与速度系数φ、能量损失系数ξ及流线形状之间的关系式。这是与传统热力计算方法不同之处。列举的计算实例证明这是一种方便而正确的方法。

The condensation process of water vapor is a two-phase nonisentropic process with releasing latent heat.Experimental study of condensation of water vapor was carried out in a shock tube.The classical homogeneous nucleation theory was adopted.The theoretical analysis and numerical calculation of water vapor condensation process were completed by means of the characteristic method.The experimental results in this paper are in good agreement with the similar results obtained by other authors.

水蒸汽凝结过程是一种含有潜热的两相非等熵过程.本文在一台激波管装置上,对水蒸汽的凝结问题进行了实验研究.本文采用经典成核理论,将特征线方法应用到水蒸汽凝结过程,进行了理论分析和数值计算.本文的实验结果与国外其他作者在激波管上所作的同类结果能吻合较好.

 
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