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为了从微观角度探究梯形转叶螺旋流消能装置的消能机理、验证其结构设计的合理性及不同参数对装置消能效果的影响,基于试验研究,运用Fluent软件进行三维螺旋流数值模拟。结果表明,数值模拟显示的消能机理与试验结果相吻合;装置消能的主力区在转叶孔板组合后,且装置的结构设计合理;转叶螺旋流消能装置的消能效果优于同类孔板射流装置的消能效果;在一定条件下,装置的消能效率与雷诺数和扭转角度均呈正比,而与开口角度呈反比。该结论为梯形转叶螺旋流消能装置的消能过程研究提供了依据,也为其结构优化和实际应用提供了理论支持。
In order to investigate the energy dissipation mechanism of trapezoidal blade spiral flow energy dissipation device and verify the rationality of its structural design and the effect of different parameters on the device energy dissipation effect from a microscopic point of view, a three-dimensional numerical simulation of spiral flow was performed using Fluent software based on the experimental study. The results show that the numerical simulation shows that the energy dissipation mechanism is in good agreement with the experimental results. The main area of device energy dissipation after the combination of rotor vane plates and the structural design of the device is reasonable. The energy dissipation effect of the vane spiral flow energy dissipation device is superior to Under certain conditions, the energy dissipation efficiency of the device is proportional to the Reynolds number and torsion angle, but inversely proportional to the opening angle. The conclusion provides a basis for the energy dissipation of trapezoidal vane spiral flow energy dissipation device, and also provides theoretical support for its structural optimization and practical application.