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Could not achieve the Constant Velocity?

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Old   March 11, 2021, 10:22
Default Could not achieve the Constant Velocity?
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Raj
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Hello all,

I am trying to simulate a simple two-conduit model. It is a straight double pipe with a length of 5 cm. I want to do thermal analysis at a constant velocity and check heat transfer for different velocities. But when I specify velocity inlet and outflow outlet or pressure outlet. There is an increase in the velocity at the outlet. I would like to take the suggestion to solve the issue and achieve the same velocity at the outlet as an inlet.

Thank you in advance
Raj
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Old   March 14, 2021, 16:41
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Yasser Selima
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Does the density change with temperature?

Compare the mass flow rate at the inlet to that at the outlet. Only worry about mass imbalance.
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Old   March 16, 2021, 05:27
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Yeah, density has a very slight change and can be ignored. But, in my model phase and velocity being constant is a priority as it is solidified melt.
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