凝结理论在汽轮机设计中应用的探讨

本文在总结西安交通大学湿蒸汽研究小组近年来部分研究成果的基础上，提出自发凝结和非均质凝结流动理论应用于蒸汽透平设计的两条技术途径。通过对自发凝结和非均质凝结进行对比，指出非均质凝结优于自发凝结的原因在于非均质改变了凝结模式。基于物理学中对带电微粒表面张力特性的研究成果，进一步提出利用电场影响凝结过程，在纯净水蒸汽中实现与非均质凝结类似过程的设想。

Study on Application of Condensation Theory to Design of Steam Turbine

In this paper a review is made to summarize some achievements obtained in the topic of wet steam condensing flows by the wet steam research group at Xi'an Jiaotong University in the past several years. Two technical approaches of the condensation theory applying to the design of steam turbine are proposed. Comparison between spontaneous condensation and heterogeneous condensation indicates that due to the substantial change of condensation pattern the heterogeneous condensation exhibits much advantage than spontaneous condensation. With some updated results available concerning the effects of electrical field on the surface tension of water particles, a new condensation process is suggested. This process is similar to the heterogeneous condensation but occurs in pure steam.