里克管的数值模拟  

Numerical Simulation of Rijke Tubes

作　　者：张国俊[1] 钟英杰[1] 张雪梅[1] 徐璋[1] 任建莉[1] 

机构地区：[1]浙江工业大学热能所机械制造及自动化教育部重点实验室,杭州310014

出　　处：《动力工程》2007年第2期247-250,281,共5页Power Engineering

基　　金：国家自然科学基金资助项目(50576087);浙江省自然科学基金重点项目(Z503122)

摘　　要：提出热源周围空气不稳定的热量与声压、脉动速度之间关系的新假设。在无外加强制作用下实现里克管脉动工况数值模拟,与里克管作为自激热声装置的实际情况一致。以外流场处理方法研究里克管内流场问题,进一步研究里克管的管口效应,以降低由它引起的高强度噪声,为里克管型强化脉动燃烧、强化传热装置产品化打下基础。通过实验,验证了模拟的正确性,并分析了模拟中出现的物理现象。A new hypothesis concerning the relationship between unsteady heat absorption of air surrounding a heat source and sonic pressure as well as the air＇s pulsating rapidity. Numerical simulation results of Rijke tubes, pulsating without forced triggering, agree with actual conditions of Rijke tubes acting as self-excited thermal-sonic devices. The flow field within Rijke tubes is here being studied together with the surrounding flow field. A foundation is laid for further research on the nozzle effect of Rijke tubes, on ways for reducing its noise level ways for effectuating intensification of Rijke tube type pulsating combustion and for developing the heat transfer installation into a product. Experimental results vindicated the correctness of the simulation and the physical phenomena displayed by simulation results are analyzed. Figs 6, tables 2 and refs 7.

关 键 词：工程热物理 里克管 数值模拟 热源模型 流场 管口效应 

分 类 号：TK12[动力工程及工程热物理—工程热物理]