Improvement Method of Centrifugal Compressor Bend Based on Energy Gradient Theory
A centrifugal compressor, energy gradient technology, applied to the components of the pumping device for elastic fluid, mechanical equipment, machines/engines, etc. The effect of convenient design, improved efficiency and stability
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[0032] The present invention will be further described below with reference to the accompanying drawings.
[0033] like figure 1 As shown in the figure, the improvement method of the centrifugal compressor curve based on the energy gradient theory, the specific steps are as follows:
[0034] Step 1. Simulate the flow physical parameters in the centrifugal compressor model stage;
[0035] Step 2. Calculate the energy gradient function value K of the flow field inside the bend of the centrifugal compressor model stage. The specific calculation process is as follows:
[0036] According to the energy gradient theory (see the paper "Mechanism of Flow Instability and Transition to Turbulence", Dou Huashu, International Journal of Nonlinear Mechanics, 2006, Vol. 5, No. 41), the value of the energy gradient function K in the model stage of the centrifugal compressor is The calculation formula is:
[0037]
[0038] In formula (1), is the total pressure of the fluid, p is the hy...
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