喷管内流体流动状况的理论分析和数值模拟  

Fluid Flow Situation in the Nozzle of the Theoretical Analysis and Numerical Simulation

作　　者：胡小芳[1] 高文峰[1] 刘滔[1] 林文贤[1] 

机构地区：[1]云南师范大学太阳能研究所,云南昆明650500

出　　处：《云南师范大学学报（自然科学版）》2015年第1期11-16,共6页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(11072211;51266016);高校博士点专项基金资助项目(20105303110001);云南省应用基础研究计划资助项目(2011FA017)

摘　　要：对喷管内流体的流动状况做了详细的理论分析,主要对喷管中管道截面积和几个状态参数之间关系进行分析,如管道截变化对流体流速、马赫数、压力、温度等参数的影响,得到喷管截面的变化规律不仅仅取决于流速的变化情况,而且还与其他状态参数有关,尤其是马赫数.最后通过模拟缩放喷管与理论进行对比分析,表明模拟是正确的,且管道内气体流场特性的数值模拟在实际工程中是可行的.In this study, the flow of the fluid in the nozzle status were analyzed in detail. The results indicated that the changing rule of the nozzle cross section not only depends on the change situation of the velocity of flow, but also related to other state parameters, especially the Mach number. Finally,the correctness of the simulation and the feasibility of numerical simulation in practical engineering were proved by comparing the simulation of laval nozzle with the theoretical analysis of it.

关 键 词：管道截面积 马赫数 缩放喷管 数值模拟 

分 类 号：O354[理学—流体力学]