【摘要】 根据对单头螺旋槽纹管内流动和换热的实验研究 ,将单头螺旋槽纹管内的三维流动简化为二维轴对称流动 ;采用 SIMPLE算法 ,对螺旋槽纹管内流动和换热进行数值模拟 ,紊流模型采用 k-ε模型。并对模拟计算数据和实验数据进行对比 ,结果表明 ,平均努塞尔数 Nu和平均摩擦因数 f与实验结果基本吻合。所开发的程序为新型高效螺旋槽纹管的开发研制提供了新的途径更多还原

【Abstract】 With experimental study, flow in a single start spirally fluted tube can be simplified as a two dimensional case. In this paper, numerical simulation is investigated on the basis of the physical model. The program used in computing the characteristics of the inside tube heat transfer and pressure drop for spirally fluted tubes, is compiled by the use of the mixing length model and the k ε turbulent model. Comparison of calculated results with those from experiments indicates that the Nu number and the mean friction factor are primarily identical.更多还原