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Fluent shows negetive pressure drop between inlet and outlet

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Old   March 23, 2022, 07:09
Unhappy Fluent shows negetive pressure drop between inlet and outlet
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hao xu
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Hi every:
I'm new here and I'm here to find a solution to the problem of my CASE. The following is my question:
I am simulating the passive rotation of an impeller in the straight pipe section with the water flow. I made two fluid zone and connected them with the interfaces. The impeller does not work and rotates passively. Now the problem is that my calculation results show that the pressure drop between the inlet and outlet is negative, which is not in line with common sense, so I want to seek some help. I used the dynamic mesh, six degrees of freedom, transient calculation, k-e.I am so confused and I wonder where is the problem.
This is my first post. I don't know how to attach the pictures. If you are interested in my case, you can contact me and I'll send you the picture. Thank you!
Looking forward to reply.
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6dof, daynamic mesh, fluent, interface, rotation

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