July 31, 2023 at 10:43 am동수 서Subscriber
식기세척기 회전노즐 유동을 확인하려고합니다. 하지만 calculate단계에서 update dynamic mesh failed라고 뜨는데 해결방법이 있을까요?
Thanks to Google (Rob):
I am trying to check the flow of the dishwasher rotating nozzle. However, in
the calculation step, update dynamic mesh failed is displayed. Is there a
July 31, 2023 at 10:58 amRobAnsys Employee
Assuming it's a "normal" dishwasher you should be able to use sliding mesh and not need dynamic mesh. That will be faster as you're updating the position of a cylindrical piece of mesh rather than needing to remesh a domain for every timestep.
These will provide information on the rotating options (second part is sliding mesh)
July 31, 2023 at 11:13 am
July 31, 2023 at 12:12 pmRobAnsys Employee
You'd need two fluid zones. One for the bulk washer, and a second for the rotating arm & nozzle.
The crossed tick means it's OK and something else was checked - look in the Ansys Meshing documentation.
July 31, 2023 at 12:21 pm동수 서Subscriber
혹시 자세히 뭐가 문제인지 모르겠어서 제가한 파일을 보내고 싶은데 메일주소가 있을까요?
July 31, 2023 at 12:26 pmRobAnsys Employee
Staff are not permitted to open or download files, nor use direct email contact due to Export Rules. Please ask questions on here.
July 31, 2023 at 12:32 pm동수 서Subscriber
General - Transient
Model - k-e, Enhanced Wall Treatment
Inlet - Pressure inlet 75000pa
Dynamic Mesh - Smoothing, Remeshing, UDF 사용
Automatic Export 이용했지만 잘안됩니다..
July 31, 2023 at 12:45 pmRobAnsys Employee
Are you adding water? Is the mesh quality good? Have you watched the two courses I recommended?
August 1, 2023 at 4:53 am동수 서Subscriber
자세히 안나와있어서 그런데 모델은 뭘로 써야하나요? 물은 추가 안합니다
August 1, 2023 at 8:01 amRobAnsys Employee
The models may be OK, your problem is that you may want sliding mesh rather than deforming. Please post some images and review the training materials I linked.
August 1, 2023 at 8:05 am
August 1, 2023 at 8:07 am동수 서Subscriber
보내준 링크에 메쉬과정이 생략되어있어서 헷갈리네요
August 1, 2023 at 8:39 amRobAnsys Employee
Thanks for that. A picture makes things clearer, especially as I'm relying on Google to read Korean!
You need to split a cylinder out around each rotating arm (I assume there are two). Those become the sliding mesh zones. It should be shown in the video, but not necessarily the meshing part: you need to review the sliding mesh options: so once you have three fluid zones (rotors & static zone) do NOT use Share Topology.
Have a look for mixing tanks on here: it's a similar approach in that the mixer units rotate inside a tank.
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