高校化学工程学报2017，Vol.31Issue(6)：1301-1310,10.DOI:10.3969/j.issn.1003-9015.2017.00.045
扭曲椭圆管强化换热与流动减阻特性的场协同分析
Field Synergy Analysis on Heat Transfer Enhancement and Flow Drag Reduction Characteristics in Twisted Oval Tubes
摘要
Abstract
In order to study heat transfer performance of twisted oval tubes, a geometric model of twisted tubes with different short and long axis ratios under twist ratio of 11.9 was proposed using CFD (computational fluid dynamics), and heat transfer enhancement and flow drag reduction problems at the entrance of the tube was studied. Velocity, pressure and temperature fields under different conditions were obtained. The synergy effects of velocity-pressure gradient and velocity-temperature gradient of twisted tubes were analysed using field synergy principle. The profiles of heat transfer enhancement and flow drag reduction with short and long axis ratios were obtained. The factors affecting heat transfer enhancement and flow resistance reduction of twisted oval tubes and their mechanisms were discussed. This study provides reliable data for optimal design and scientific research of twisted oval tube heat exchangers.关键词
扭曲管/CFD/数值模拟/场协同原理Key words
twisted tube/CFD (computational fluid dynamics)/numerical simulation/coordination principle分类
化学化工引用本文复制引用
马芳芳,云和明,郭训虎,陈宝明..扭曲椭圆管强化换热与流动减阻特性的场协同分析[J].高校化学工程学报,2017,31(6):1301-1310,10.基金项目
山东省自然科学基金(ZR2010EM06). （ZR2010EM06）
