Simscape: thermal liquid pump

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Nikolay Panasetsky
Nikolay Panasetsky on 22 Aug 2016
Commented: Yifeng Tang on 12 Jul 2022
Hello!
I have the oil flow rate data in the centrifugal pump (for the transformer's cooling system).
But I haven't found any useful pumps in which I can use this data, only pressure and mass flow sources.
Is there any pump blocks, that could be handy?

Answers (1)

Yifeng Tang
Yifeng Tang on 1 Jul 2022
In newer versions of Simscape Fluids, there are more pump modules available.
In general, the pump can be modeled by using look up tables of rpm, pressure ratio/difference, and flowrate. One can set up pressure sensors at the two ends of the ideal flow source, send the pressure signal to a LUT that will give you the flowrate, which can be then sent to the source block.
  3 Comments
Yifeng Tang
Yifeng Tang on 12 Jul 2022
I usually do this:
where delta_P drives the flow rate. But I think your way, flow rate drives delta_P, would work as well. Any observation you could share?
Couple notes:
  1. adding another dimension of pump RPM allows you to turn off and adjust the pump output.
  2. If your MATLAB version allows, use isothermal liquid instead of hydraulics. https://www.mathworks.com/help/physmod/simscape/ug/upgrading-hydraulic-models-to-use-isothermal-liquid-blocks.html

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