开槽对翅片换热器换热性能影响的数值模拟

Numerical Simulation on the Effects of Slotted Fin on Heat-transfer Performance of the Finned Heat Exchangers

采用FLUENT软件,对不开槽翅片和开槽翅片进行了三维数值模拟,通过温度场、压力场等对两种翅片管的换热性能进行了分析。结果表明:随着入口风速的增加,两种翅片管换热量增大,压力损失增大;相同风速下开槽翅片管的换热量更大、压力损失也更大,开槽翅片管的综合换热性能要好于不开槽翅片管。

Three-dimensional simulations were conducted on slotted and non-slotted fins using FLUENT software to study their heat-transfer performance by analyzing the temperature field and pressure field.Results show that with the rise of air velocity,the heat-transfer rate and pressure loss of both the fins increase;at constant air velocity,the slotted fin has higher heat-transfer rate and greater pressure loss.The comprehensive heat-transfer performance of tubes with slotted fin is better than that with non-slotted fin.