摘要
通过对W形旋流管的优化设计 ,使旋流管的结构参数得到合理匹配 ,以达到更高的能量传递速率 ,并使换热系统的综合性能最优。以性能指标 (Nu/Nu0 ) /(ξ/ξ0 ) 1/3来评价旋流管的强化传热热力性能 ,推导出了其目标函数和约束方程 ,用复合形法结合每一步对满足约束条件进行寻优 ,从而求出其最佳结构参数的匹配 ,为W形旋流管设计提供了理论依据。优化计算表明 ,旋流管换热系统的传热 -阻力综合性能指标优于光滑管换热系统 ,旋流管的螺距、槽深对旋流管换热系统的传热、压降、功率消耗等影响很大 ,但是小螺距。
In order to get higher energy transfer rate and optimum comprehensive performance of the heat transfer system, the best matching geometrical parameters of W shaped single eddying tube are sought by optimize design. The performance of enhanced heat transfer of eddying tubes is evaluated by using the performance index (Nu/Nu 0)/(ξ/ξ 0) 1/3 ,the objective function and restrain equation are obtained, thereby the optimum structural parameters of the eddying tube are worked out. Optimized calculation shows that, the comprehensive performance of the eddying tube is better than that of the smooth tube, and the comprehensive performance of the eddying tube with minor screw pitch and proper groove depth is excellent.
出处
《石油机械》
北大核心
2001年第5期15-17,2,共3页
China Petroleum Machinery
