固液两相流理论在水煤浆喷嘴上的应用研究

发展以煤代油技术是缓解能源安全问题的一个重要方面,针对供浆系统中存在的喷嘴磨损和堵塞问题,根据水煤浆燃料组分情况运用固液两相流理论对燃料供给过程进行了分析;建立了水煤浆两相粘性流体的一般方程式,且对固相动量方程中相关力进行了分析,通过对固相动量方程和连续方程在边界层区域内的简化,推导出求其解的方程式,得出较为合理的过流表面边界层流动规律。

Research on Applying Solid-fluid Double Phase Theory to Water Coal Slurry Nozzle

Developing the coal generation of oil technology is an important aspect of relieving the problem of energy security. At present, although people make further progress in the problems of its combustion, discharge and so on, the problems of nozzle attrition and jaming in supply system of the thick liquid haven t been solved. According to the combustion ingredient of water coal slurry nozzle, apply solid - fluid double phase theory to analyze the supply process of the combustion. And then the general equation of solid - fluid double phase fluid is established. The solution of the equation can be got from the simplification of solid phase momentum and continuous equation in boundary area according to the force analysis of solid phase momentum equation. Furthermore the flow rule of flow surface in boundary layer can be obtained more reasonably.