局部全息格式用于环扇形顶盖驱动流的数值模拟  

Application of Local Holographic Difference Scheme to Numerical Simulation of Driven Flow in a Polar Cavity

作　　者：吴江[1] 章明川[1] 尹斌[1] 陈启峰[1] 高茂[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《上海交通大学学报》2002年第10期1401-1403,1412,共4页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目 (5 98760 19) ;国家重点基础研究发展规划 (973 )资助项目 (G19990 2 2 2 0 9-0 4)

摘　　要：针对旋流燃烧器数值模拟中回流区伪扩散问题 ,在极坐标系下提出局部全息格式( LHDS) ,并运用 LHDS对环扇形空腔中顶盖驱动流进行了数值模拟研究 ,计算结果与文献吻合良好 .同时结果表明 ,LHDS计算精度高于乘方格式和迎风格式 ,可以在较大速度范围内得到足够精度的计算结果 .LHDS的计算程序比乘方格式简单 ,比迎风格式略微复杂 ;计算时间短于乘方格式 。To solve the problem of pseudo diffusion in simulation on recirculating zone of swirling flow burner, a local holographic difference scheme (LHDS) in polar coordinate was proposed and used to simulate the driven flow in a polar cavity. The computation results agree well with the results in the reference. And the computation accuracy of the LHDS is higher than that of PLDS and UDS. The LHDS can get enough computation accuracy in a big range of velocity. The program of the LHDS is simpler than that of PLDS and slightly more complicated than that of UDS. The computational time of the LHDS is shorter than that of PLDS and nearly equal to that of UDS.

关 键 词：环扇形顶盖驱动流 局部全息格式 回流流动 数值模拟 旋流燃烧器 煤燃烧 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程] TQ534[化学工程—煤化学工程]