Innovative Design of Leeward Surface of Pin Fin in Flame Arresters Fitted in Explosion Relief Valve

摘要：

　　In order to ensure the safety of the ship,the explosion relief valve fitted with flame arresters for diesel engine crankcase was required to extinguish flame and reduce pressure.The pin fin took an important role in heat loss and pressure drop.In this study,innovative design of leeward surface of pin fin in flame arresters was proposed.Based on a rectangular pin fin,three typical concave and convex leeward surface shapes of pin fin were designed,which were triangular,trapezoidal elliptic shapes.Later,a numerical analytical model of 3D turbulent flow flied of periodical cubic channel was established,and the effect of leeward surfaces on heat transfer and pressure drop of pin fin was investigated.The results showed that,the concave leeward surfaces can enhance heat transfer comparing with convex ones.The pin fin with elliptic concave leeward surface had the best heat transfer performance.Concave and convex leeward surfaces of pin fin all had the great pressure drop performance.The vortices at the back of pin fins with concave windward surfaces could slow down the velocity of the airflow and enhance heat exchange.This research was of importance to guide the design of pin fin and flame arresters for explosion relief valves.

关键词： Flame arrester Pin fin Leeward surface Heat transfer Pressure drop

作者: Lanfang Jiang Shuyou Zhang Xin Shu Weina Hao Yun Ren Zhiya Chen

作者单位: Zhijiang College of Zhejiang University of Technology,Shaoxing 312030,China School of Mechanical Engineering,Zhejiang University,Hangzhou 310058,China College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310032,China

会议类型: 国际会议

会议名称: 2019机械设计国际会议暨第20届机械设计学术年会

会议地点: 浙江湖州

会议语种:英文

页码: 274-287

在线出版日期: 2019-08-12（万方平台首次上网日期，不代表论文的发表时间）