Methods Of Slurry Pump Performance Prediction

The methods of Slurry Pump performance prediction can be summarized into two: numerical method and loss model method

Numerical Methods:

A numerical method also called numerical test or computational test method

At present, the pure numerical method is mainly based on computational fluid dynamics to numerically simulate the flow field in the pump

Obtain the flow field information in the pump (speed field, pressure field, etc.)

Then calculate the relationship between the pump head, power, efficiency and flow rate to realize the prediction of pump performance

Due to the limitation of calculation software function and the abnormal the complexity of the flow, such as unsteady, separated flow, vortex flow, etc.

Makes the calculation of the internal flow field of the slurry pump's flow part more accurate when calculating the design conditions

However, the error is large when calculating the flow field in the full flow range, especially the flow field under small flow conditions

Loss model method:

Through the analysis of the physical nature of each part of the hydraulic loss and its influencing factors.

Seek the relationship between hydraulic loss and structural parameters, make certain assumptions and simplify the flow field, and establish a calculation model for hydraulic loss.

The advantage of this method is that it can fully consider the effects of secondary flow, inlet reflux, boundary layer separation, vortex and wake, etc.

High practicality and accuracy of actual performance prediction.

Therefore, most research institutions and scholars use this method to predict the performance of water pumps.

The calculation method of the hydraulic loss in the impeller was originally analyzed by the univariate flow theory and corrected by experience.

However, because the method of univariate flow is used to study the problem of ternary flow, it naturally limits the accuracy of prediction.

Therefore, in order to further improve the prediction accuracy, two-dimensional and three-dimensional methods are gradually emerging.

Foreign countries generally divide the loss in the impeller into friction loss, impact loss, and mixed loss.

The above is summarized by the slurry pump manufacturer based on experience, for reference only! Please consult a technician for details.

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M Heavy Duty Slurry Pump