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Old   July 10, 2022, 22:28
Default DPM heat transfer
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JiangZeping
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Using DPM to calculate the convective heat transfer of bubble flow, but after the injection of bubbles, the fluid, and the temperature of the heating wall did not change, it is impossible ah, I have selected the continuous phase and discrete phase interaction, is there any heat transfer options I did not pay attention to it, please give some advice, thank you very much.
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Old   July 11, 2022, 04:48
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Can DPM determine the effect of particles on the continuous phase in addition to tracking particle trajectories? For example, heat transfer, or do I need to include a multiphase flow model
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Old   July 11, 2022, 05:26
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Yes, DPM can account for heat and mass exchange between the droplets and continous phases. Besides enabling the "Interaction with continous phase" checkbox, check that in the injection panel, the DPM laws (e.g., heating, etc..) are enabled
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Old   July 11, 2022, 08:41
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Quote:
Originally Posted by alainislas View Post
Yes, DPM can account for heat and mass exchange between the droplets and continous phases. Besides enabling the "Interaction with continous phase" checkbox, check that in the injection panel, the DPM laws (e.g., heating, etc..) are enabled
hi, alainislas
Thank you for your answer. I also ended up noticing the law option for the bubble flow I simulated, and I noticed that it seems like the law here applies more to droplet and evaporating. I just need to simulate the effect of bubbles on convective heat transfer, through Ansys fluent theory guide, I can only choose Law 1, do you agree with this, or have any suggestions to help me?
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Old   July 11, 2022, 09:21
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I read in the Ansys Learning Forum that someone said that DPM_LAW only changes the particle temperature, it is not added directly to the energy equation for heat transfer calculations. That is, the temperature change and interaction of the particles are not updated to the fluid near the particles, and the injection of bubbles does not have the effect of heat transfer. Is that so? Can that partner explain?
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