Monday, January 15, 2024

💥💥💥 How to draw and calculate centrifugal pump in Ansys Fluent?

A centrifugal pump is a device that uses the rotation of an impeller to increase the pressure and flow rate of a fluid. Ansys Fluent is a software that can simulate the fluid dynamics and performance of a centrifugal pump using various methods and models1.


To draw and calculate a centrifugal pump in Ansys Fluent, you will need to follow these general steps:

For more details and examples, you can watch this video tutorial1 or refer to this forum post2 or this online discussion4

How to draw (general rulez) centrifugal pump?

A centrifugal pump consists of a casing, an impeller, and a shaft. The casing is the outer part that encloses the fluid and directs it to the outlet. The impeller is the rotating part that transfers energy to the fluid and increases its pressure and velocity. The shaft is the part that connects the impeller to the motor and transmits the torque.

To draw the geometry of a centrifugal pump, you need to follow these steps:

  • Draw a circle with the diameter of the inlet of the pump. This will be the base of the casing.
  • Draw a spiral curve that starts from the inlet circle and ends at the outlet of the pump. This will be the shape of the casing. The spiral curve should have a constant pitch and a variable radius that increases with the angle. The pitch and the radius depend on the design specifications of the pump.
  • Draw another circle with the diameter of the outlet of the pump. This will be the top of the casing.
  • Extrude the spiral curve between the inlet and outlet circles to create the casing volume. You can use the coil tool with the spiral option to do this easily1.
  • Draw a circle with the diameter of the impeller inside the casing. This will be the base of the impeller.
  • Draw a series of blades on the impeller circle. The blades should have a curved shape that follows the direction of the fluid flow. The number, shape, and angle of the blades depend on the design specifications of the pump.
  • Extrude the blades along the impeller circle to create the impeller volume. You can use the sweep tool to do this easily2.
  • Draw a cylinder with the diameter of the shaft inside the impeller. This will be the base of the shaft.
  • Extrude the shaft cylinder to the desired length. You can use the extrude tool to do this easily2.

You have now drawn the geometry of a centrifugal pump. You can use any CAD software to do this, such as Ansys DesignModeler, Ansys SpaceClaim, or Inventor3

What are some common errors when modeling a centrifugal pump in Ansys Fluent?

Some common errors when modeling a centrifugal pump in Ansys Fluent are:

To troubleshoot these errors, you can check your boundary conditions, refine your mesh, use appropriate physical models, and try different solver settings12

What are some best practices for modeling pumps in Ansys Fluent?

Some best practices for modeling pumps in Ansys Fluent are:

For more details and examples, you can watch this video tutorial3 . 

What are common mistakes in centrifugal pump design?

Some common mistakes in centrifugal pump design are:

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