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energy storage device (non isothermal flow)

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hello sir,

I have a simple setup in which hot water is flowing inside the solid steel cylinder, I want to see how temperature profile changes with time. during flow water will give its energy to cylinder, hence water temp at outlet should be lower than inlet.
when I run it using time dependent solver it gives the error as "failed to find consistent initial values"
i m attaching the file

please help.


3 Replies Last Post 06.10.2011, 10:25 GMT-4

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Posted: 1 decade ago 05.10.2011, 00:45 GMT-4
can anybody help me?
i will be important help for me?
waiting for your reply...
can anybody help me? i will be important help for me? waiting for your reply...

Lechoslaw Krolikowski

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Posted: 1 decade ago 05.10.2011, 12:51 GMT-4
Hi,

My advice is as follows.
Take into account the axial symmetry. Transform your 3D model into 2Daxi.
Apply a smooth change of the inlet velocity from 0 to 0.025 m/s (use a smeared step function).
Use a dense mesh.

Regards,
Andrzej
Hi, My advice is as follows. Take into account the axial symmetry. Transform your 3D model into 2Daxi. Apply a smooth change of the inlet velocity from 0 to 0.025 m/s (use a smeared step function). Use a dense mesh. Regards, Andrzej

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Posted: 1 decade ago 06.10.2011, 10:25 GMT-4
thanks for the reply.

i can not go for 2d and symmetry because i want to extend this model to some other model which can not possible in 2d. i have one basic query, how can i see time dependent change on this type of non isothermal flow?
thanks for the reply. i can not go for 2d and symmetry because i want to extend this model to some other model which can not possible in 2d. i have one basic query, how can i see time dependent change on this type of non isothermal flow?

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