How to simulate a pump
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When simulating the pump as a weightless rigid body, where should the fixing point of the pump be located? Since the simulation of a weightless rigid body is primarily used to calculate thermal displacements, I have placed the fixing point at the bottom of the pump body, rather than at the fixing point of the support. I’m not sure if this is correct
We all set the pump outlet as a fixed point.
Does the initial displacement at the pump outlet need to be considered? Is it true that the initial displacement of a small pump has little impact on the results?
You can add an additional displacement; generally, the pump outlet is fixed in place.
There are various simulation methods; using the pump foundation as a fixed point doesn’t seem correct, as temperature variations lead to inaccurate calculations of thermal expansion
I get it wrong every time I simulate! Is there anyone who can explain it step by step in detail?
I’m not sure whether the initial displacement of the pump nozzle should be taken into account or not; some people say it should be considered while others say it shouldn’t. What are your experts’ opinions?
How should the diameter of the weightless rigid member from the pump inlet to the fixed point be determined? Should it be the inlet diameter or the equivalent diameter? If it is the equivalent diameter, how is this value obtained?
Use the pump outlet as a fixed point. If thermal expansion displacement needs to be taken into account, it is calculated by multiplying the material’s coefficient of thermal expansion by the distance.
If we ignore displacement, does it have a significant impact on the results?