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does heat transfer in solids and fluids include convection?
Posted 12 giu 2023, 11:07 GMT-4 Heat Transfer, Modeling Workflow, Physics Interfaces 7 Replies
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Hello everyone,
I want to know if the physics "heat transfer in solids and fluids" alone includes natural convection or if I need to add Laminar flow with it.
Sincerely,
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you should use a fluid interface to consider the 'convection'.
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Ok, thanks for your reply
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Hi,
To clarify: The Heat Transfer in Solids and Fluids physics interface includes both a Solid node for heat conduction in solid domains and a Fluid node for heat convection and conduction in fluid domains, so you can use it for heat convection, but a Heat Transfer in Fluids physics interface is more appropriate if the entire computational domain consists of fluids. For the heat convection, the velocity can be taken from an added fluid-flow interface in your model, or you can use a user-defined expression for the velocity field. There is also a predefined Conjugate Heat Transfer multiphysics interface, which includes a laminar or turbulent fluid-flow interface and a predefined multiphysics coupling between the heat transfer and the fluid flow for modeling nonisothermal flow.
Best regards,
Magnus
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Hi,
To clarify: The Heat Transfer in Solids and Fluids physics interface includes both a Solid node for heat conduction in solid domains and a Fluid node for heat convection and conduction in fluid domains, so you can use it for heat convection, but a Heat Transfer in Fluids physics interface is more appropriate if the entire computational domain consists of fluids. For the heat convection, the velocity can be taken from an added fluid-flow interface in your model, or you can use a user-defined expression for the velocity field. There is also a predefined Conjugate Heat Transfer multiphysics interface, which includes a laminar or turbulent fluid-flow interface and a predefined multiphysics coupling between the heat transfer and the fluid flow for modeling nonisothermal flow.
Best regards,
Magnus
Hi, Thanks for your reply now I understand it better. I have a question, when I use Conjugate Heat Transfer, does it also take in consideration heat transfer by radiation?
Best regards, Mohammed
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Hi Mohammed,
With the Conjugate Heat Transfer multiphysics interface, you can add surface-to-ambient radiation to boundaries. With the Heat Transfer Module, there are additional physics interfaces for surface-to-surface radiation that you can add to the model if needed.
Best regards,
Magnus
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Hi Mohammed,
With the Conjugate Heat Transfer multiphysics interface, you can add surface-to-ambient radiation to boundaries. With the Heat Transfer Module, there are additional physics interfaces for surface-to-surface radiation that you can add to the model if needed.
Best regards,
Magnus
Hi, Thanks for your reply I understand Hi Mohammed,
With the Conjugate Heat Transfer multiphysics interface, you can add surface-to-ambient radiation to boundaries. With the Heat Transfer Module, there are additional physics interfaces for surface-to-surface radiation that you can add to the model if needed.
Best regards,
Magnus
Hi, Thanks for your reply, I understand. Best regards, Mohammed
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Hi Mohammed,
With the Conjugate Heat Transfer multiphysics interface, you can add surface-to-ambient radiation to boundaries. With the Heat Transfer Module, there are additional physics interfaces for surface-to-surface radiation that you can add to the model if needed.
Best regards,
Magnus
Hi Magnus, I have another question if you don't mind, do I also need to add an additional physics interface for heat conduction or it's already included in the Conjugate Heat Transfer Multiphysics?
Best regards, Mohammed