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Flow Simulation - Centrifugal Pump - Solver Abnormally Terminated

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Old   July 12, 2022, 11:05
Default Flow Simulation - Centrifugal Pump - Solver Abnormally Terminated
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Hello for everyone,

I want to perform CFD analysis of centrifugal pump to find the performance of pump. I have the tested data for this pump.

Definition of the BCs (see Figure 1):

Internal Volume Flow Rate on INLET

Environment Pressure on OUTLET

Real wall (Stator) - marked as blue in the Figure 1

Local Rotating (Averaging) Region 2950 RPM. Rotating region is defined by the outer shape of the impeller (marked as green*in the Figure 1)

Surface Goals:

Mass Flow Rate Inlet

Mass Flow Rate Outlet

Av. Static Pressure Inlet

Bulk Av Static Pressure Outlet (at the point of the discharge flange)

Torque on impeller

Equation Goals:

Pressure Drop* { Av Static Pressure Outlet}-{Av Static Pressure Inlet}

Efficiency {Pressure Drop}*{Inlet Volume Flow 1:Volume flow rate:5.000e-003}/{Rotating Region 1:Angular velocity:3.089e+002}/{SG Torque on Impeller}

Most of the time I got an error "Solver Abnormally terminated" after going circa 300 iterations.

If it got solved, I observed that Mass Flow Rate at inlet and outlet were not equal.

They had a huge difference in value.

The pressure difference and torque value were also very high (Figure 2.).

Kindly suggest and help me out what changes I should make in the set up to achieve the required results.

Thanks in advance.

Stan K.
Attached Images
File Type: png Figure 1. Definition of the BCs.PNG (103.0 KB, 11 views)
File Type: png Figure 2. Goal Plot.PNG (18.7 KB, 6 views)
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