化工进展2016，Vol.35Issue(7)：1994-2000,7.DOI:10.16085/j.issn.1000-6613.2016.07.009
螺旋缠绕波节管传热与流动性能分析
Heat transfer and flow characteristics analyses of helical tube with corrugation
摘要
Abstract
Using water as the working fluid,the turbulent heat transfer and flow characteristic of helical tube with corrugation were numerically investigated. The heat transfer enhancement mechanism was analyzed,and the effects of corrugation heightH and corrugation pitchP on heat transfer and flow characteristics were discussed. The simulation results indicated that the overall heat transfer performance of helical tube with corrugation was better than that of smooth helical tube in the same working condition,and that the centrifugal force coursed by the helical movement of fluid led to secondary flow in the vertical flow direction. Meanwhile,the back flow in main flowing direction was resulted from the periodic expansion and contraction of tube cross section,which destroyed the flow boundary layer,enlarged the turbulence intensity and strengthened the heat transfer process greatly. With increasingH,Nu and f the overall heat transfer performance increased. With decreasingP,Nu increased,f decreased and the overall heat transfer performance were improved greatly .关键词
螺旋缠绕波节管/强化换热/波节深度/波节间距Key words
helical tube with corrugation/heat transfer enhancement/corrugation height/corrugation pitch分类
化学工程引用本文复制引用
王定标,邓靜,张灿灿,张喜迎,董桢,谷帆江..螺旋缠绕波节管传热与流动性能分析[J].化工进展,2016,35(7):1994-2000,7.基金项目
国家自然科学基金项目（21576245）。 （）
