A two-dimensional incompressible diffuserflow was numerically simulated employing no staggered grid arrangement and incompressible SIMPLE method to solve GAO-YONG turbulence equations.
The relative position between the diffusion blade and the volute tongue has influence on the distribution of diffuserflow field and the position is regulated suitably to reduce the hydraulic loss.
扩压叶片与隔舌相对位置对扩散段流场的分布有影响,适当调整可以减小水力损失。
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Thee diffuser length should be long enough to ensure the main flow deceleration.