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海角下的秘密

新虫 (初入文坛)

[求助] 求教hypermesh中的CFD Tetramesh With BL和W/oBL 含义 已有1人参与

请问大侠们,CFD Tetramesh中CFD Tetramesh With BL和W/oBL 含义是什么,打算用hypermesh做fluent前处理,模拟飞行器贴着地面飞行,计算地效应作用产生的附加升力。用半个椭球作为压力远场,飞行器位于压力远场中心,椭球面和后面的截面定义为pressure-farfield,飞行器表面定义为wall,并且把上表面和下表面分开,分别命名为upper和lower,如图所示,这里 With BL和W/oBL 应分别选择什么?新手诸多不懂, 烦请虫友们赐教,

求教hypermesh中的CFD Tetramesh With BL和W/oBL 含义
CFDmesh.jpg


求教hypermesh中的CFD Tetramesh With BL和W/oBL 含义-1
压力远场.jpg
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海角下的秘密

新虫 (初入文坛)

刚刚搞懂了BL就是边界层,应该只在飞行器表面附有边界层才对,欢迎大侠们继续交流!
2楼2015-04-23 10:59:53
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beefman

铜虫 (小有名气)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
海角下的秘密: 金币+10, ★★★很有帮助, 多谢啦,金币不多,略表谢意,哈哈,以后多向您请教~ 2015-04-24 12:05:32
把help文件里面的解释贴出来吧,hm虽然比较熟悉,可惜本人不是搞CFD的,只能帮你到这里了。

With BL (fixed/float):
This selects tria/quad elements that define the surface area on which you need to generate boundary layers.

If a refinement box includes boundary shells selected via the With BL (float) selector and the remesh option is used, the surface elements are remeshed using the element size assigned to the refinement box.

W/o BL (fixed / float)
This selects tria/quad elements that define the boundary regions where a boundary layer is not desired.

The option W/o BL (fixed) can be used, for example, if two adjacent volumes are meshed sequentially and a matching interface has to be ensured. In that case the common interface elements have to be selected as W/o BL (fixed).
3楼2015-04-23 18:06:51
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