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Low Reflecting Boundary Condition

Posted 12.09.2024, 12:25 GMT-4 2 Replies

FDZR
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I'm using Low-Reflecting BC instead of PML to absorb my harmonic loading applied perpendicular to the wall of the structure. Since it can be only applied at outer boundaries, what is the minimum distance of the LRBC from the time dependent study domain?

2 Replies Last Post 12.09.2024, 17:33 GMT-4
Dave Greve
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Posted: 7 months ago 12.09.2024, 12:36 GMT-4

Low reflecting means low not zero. So the distance should be great enough that the reflected wave does not interfere with the process you are trying to simulate.

If the wave is normally incident you should be able to tune the low-reflecting condition to minimize the reflected wave.

Low reflecting means low not zero. So the distance should be great enough that the reflected wave does not interfere with the process you are trying to simulate. If the wave is normally incident you should be able to tune the low-reflecting condition to minimize the reflected wave.
FDZR
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Posted: 7 months ago 12.09.2024, 17:33 GMT-4

Thank you very much.

For saving computational time I considered my LRBC distance from the time dependent study domain as half of wavelenght.

Thank you very much. For saving computational time I considered my LRBC distance from the time dependent study domain as half of wavelenght.

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