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Simscape: thermal liquid pump

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Nikolay Panasetsky
Nikolay Panasetsky el 22 de Ag. de 2016
Comentada: Yifeng Tang el 12 de Jul. de 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?

Respuestas (1)

Yifeng Tang
Yifeng Tang el 1 de Jul. de 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 comentarios
Andreas
Andreas el 12 de Jul. de 2022
@Yifeng Tang like this:
Yifeng Tang
Yifeng Tang el 12 de Jul. de 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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