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How to set time domain Simscape model to hours instead of seconds?

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DB
DB 2023-5-15
回答： DB 2023-5-16
For my hydraulic isothermic model I model a centrifugal pump installation. Normally, flows and pump capacity characteristics are in m^3/h. However, in the centrifugal pump (IL) block I need to set capacity vector in m^3/s, and it does not recognize me changing it to m^3/h. This makes it more difficult than necessary, as I now need to change all other flow units to m^3/s. I cannot just act like seconds are hours, as I will then get problems with units as rpm (minute).
How do I change the flow to m^3/h?

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DB
DB 2023-5-16
It seems the notation for hours is hr, not h. Therefore, I can change the flowrate from m^3/s to m^3/hr and it works.

更多回答（1 个）

Nikhil Muthakana
Nikhil Muthakana 2023-5-15
Convert your m^3/h parameters to m^3/s by dividing the m^3/h value by 3600 (since 1 m^3/s = 3600 m^3/h)
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Nikhil Muthakana
Nikhil Muthakana 2023-5-15
The blocks do not have the option of m^3/h (even in the Flow Rate Sensor block), so after converting the simscape physical signals to simulink data signals, use a gain block on the signal with 3600 as the value to convert the m^3/s to m^3/h when you log the flow rate signals. You can name the signals appropriately to keep track of the units.
DB
DB 2023-5-16
It seems the notation for hours is hr, not h. Therefore, I can change the flowrate from m^3/s to m^3/hr and it works.

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