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boundary setting when simulate a half model

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Old   November 15, 2017, 21:54
Default boundary setting when simulate a half model
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YHY
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hyhui
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Hello everyone,
I want to simulate the gas flow in a two-stroke engine, and the geometry is symmetry. So i want to simulate only half of it to reduce the simulation time.
How should i set the boundary type of the section profile. Is that right to set the boundary type as "symmetry"?
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Old   November 16, 2017, 15:04
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Tristan Burton
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Hello,

If you're simulating gas exchange, we recommend a full 3-D simulation, even if the geometry is symmetric. Sector simulation (using periodic boundary conditions) is appropriate for closed-cycle simulations of engines that are swirl-dominated.

Best regards,

Tristan
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Old   November 17, 2017, 08:57
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Quote:
Originally Posted by tmburton View Post
Hello,

If you're simulating gas exchange, we recommend a full 3-D simulation, even if the geometry is symmetric. Sector simulation (using periodic boundary conditions) is appropriate for closed-cycle simulations of engines that are swirl-dominated.

Best regards,

Tristan
Hello Tristan

Thanks for your reply!
Although it is not recommended to use sector simulation when simulate gas exchange, if i use a half model, which boundary type should i choose for the profile.
Sincerely!
hyhui
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