{"id":163570,"date":"2021-10-31T08:04:41","date_gmt":"2021-10-31T08:04:41","guid":{"rendered":"\/forum\/forums\/topic\/re-high-aspect-ratio\/"},"modified":"2021-11-04T14:40:31","modified_gmt":"2021-11-04T14:40:31","slug":"re-high-aspect-ratio","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/re-high-aspect-ratio\/","title":{"rendered":"Re: High aspect ratio"},"content":{"rendered":"
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Hi everyone,<\/p>\n

This is a simple question but I'm not quite sure what to do about it. I have water flowing inside a 4-pass pipe which is buried in sand. The sand is heated and the water will absorb the heat through the pipe wall. But since the problem involves heat transfer, it is important that I pay special attention to the fluid-pipe wall interface. To maintain a y+ = 1, my calculated first layer height for inflation cell is 0.014 mm. I included 20 inflation layers and the pipe inside diameter is 15mm. I used the Sweep method to mesh the coolant. The orthogonal quality and skewness seem to be quite good. But since the inflation layers are quite thin (because the cell height is low), I get quite bad aspect ratio result. Below are the results:<\/p>\n

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