波纹几何参数对人字形板式换热器内流动形态的影响机理

应用数值计算软件对人字形波纹板式换热器内板片间的流场进行了模拟.模拟结果验证了相关文献关于波纹倾角β对波纹板片间流体流动形态的影响规律：随着波纹倾角β由小变大，通道中的流动形态由“两组交叉流”转变成“曲折流”；模拟结果还发现波纹倾角β不是影响人字形板式换热器内流动形态的唯一因素，人字形波纹的其它几何参数也会影响到流体的流动形态.从流体沿波纹方向的流体动量分量和流动阻力共同作用的角度，探讨了波纹几何参数对人字形波纹板片间流体流动形态的影响机理.

Mechanism of flow pattern affected by corrugation geometric parameters in the chevron-type plate heat exchanger

Flow fields were simulated by mathematical software between two corrugated plates in chevron type plate heat exchanger. Simulation results confirm the changing rule of fluid's flow pattern between corrugated plates affected by corrugation inclination angel β reported by correlated literature, namely the flow pattern in channel between two plates changed from ‘cross flow’ to ‘zigzag flow’ with angel β increasing. The simulation results show that corrugation inclination angel β is not the only factor affects the flow pattern in chevron type plate heat exchanger, but the others geometric parameters of corrugation can also affect the flow pattern. From the view of coactions of both component of flow momentum and flow resistance in direction of corrugations, the essential mechanism of the flow pattern in channel between two chevron type corrugation plates affected by corrugation geometric parameters was discussed.