今夕何夕 发表于 2019-1-9 12:20

弯管声振耦合最后有问题

本帖最后由 今夕何夕 于 2019-1-9 12:24 编辑

这是步骤的Word版,如以下文字表述不清,可以查看Word版
请各位老师帮我看一下,困扰我很长时间了1.导入cgns文件,由于数据是用fluent计算的,所以数据保存在centroid上,要进行从centroid到node and element的数据转移,才能看弯管表面的压力云图,后保存成分析文件。 http://forum.vibunion.com/forum.php?mod=image&aid=98787&size=300x300&key=a4464f9ef6d1d8c1&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98788&size=300x300&key=810bb5e857063416&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98789&size=300x300&key=ec09ab152c0f9a7e&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98790&size=300x300&key=ed28dcf90a2209b3&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98791&size=300x300&key=9f7787e0256b3543&nocache=yes&type=fixnone2.进入声学有限元环境导入声学有限元网格(声学有限元网格是在ANSYS里自己制成的.nas格式的文件),定义网格类型为声学网格、材料、属性、声学网格前处理等操作。导入结构网格及结构模态(这里的结构网格和模态是在ANSYS里计算的,生成了.rst格式的文件),定义网格为结构网格类型,定义材料属性,添加阻尼
http://forum.vibunion.com/forum.php?mod=image&aid=98792&size=300x300&key=41c4de04dfbad39b&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98793&size=300x300&key=511bc8d46cf6522f&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98794&size=300x300&key=f0ab467a3ed97e16&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98795&size=300x300&key=078c318b1c9b0d8f&nocache=yes&type=fixnone

3. 定义单元组,分别定义流固耦合面中流体和固体接触的面,都是用特征角的方法,声学网格(即流体部分)是用特征角定义里的shellelements,结构部分是用faces。 http://forum.vibunion.com/forum.php?mod=image&aid=98796&size=300x300&key=2513d84465772938&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98797&size=300x300&key=1f1f891f5bff78a6&nocache=yes&type=fixnone4.导入CFD分析文件,将数据(CFD分析文件里刚开始的Load Vector Set-Pressure)转移到之前定义的结构单元组上http://forum.vibunion.com/forum.php?mod=image&aid=98798&size=300x300&key=b3cbd22dbdb4df87&nocache=yes&type=fixnone之前已经把数据从centroid转移到node and element 上了,source选择node and element进行转移,为什么压力结果为0(如下图所示)http://forum.vibunion.com/forum.php?mod=image&aid=98799&size=300x300&key=cc8b51f44d7c0f16&nocache=yes&type=fixnone后如下图所示source选择centroid,target选择结构单元组,可以查看压力结果,所以我这里source选择了centroid http://forum.vibunion.com/forum.php?mod=image&aid=98800&size=300x300&key=f97fedf647a3eb3b&nocache=yes&type=fixnone5.基于模态的声振耦合响应计算Boundary Condition Set和Load Function Set都是No,Load Vector Set选择了结构树上的Data Transfer Solution Set.2,但是选不中,选择Data Transfer Solution Set.2会自动跳到了Structural Mode Set上(如下图所示)但是选择External Vector Set from Load Vector Set-Pressure可以选中。 http://forum.vibunion.com/forum.php?mod=image&aid=98801&size=300x300&key=b7fb9a63ff78ef6e&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98802&size=300x300&key=a1ff6bbf001527d4&nocache=yes&type=fixnoneModal Superposition Vibro-Acoustic Response Case下的Vibro-Acoustic Mesh Mapping 的结构网格声学网格分别选择之前定义的流固耦合面流体和固体单元组file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml\wpsD06C.tmp.pngfile:///C:\Users\Administrator\AppData\Local\Temp\ksohtml\wpsD07D.tmp.png http://forum.vibunion.com/forum.php?mod=image&aid=98803&size=300x300&key=1c641e53b7e4c8b4&nocache=yes&type=fixnone后双击Modal Superposition Vibro-Acoustic Response Solution.1,将Frequency Range选择from Input Load Vector,后update Modal Superposition Vibro-Acoustic Response Solution.1 http://forum.vibunion.com/forum.php?mod=image&aid=98804&size=300x300&key=9edb345fcd3fb5fd&nocache=yes&type=fixnone就出现了以下提示 http://forum.vibunion.com/forum.php?mod=image&aid=98805&size=300x300&key=3340ad78ef044544&nocache=yes&type=fixnonehttp://forum.vibunion.com/forum.php?mod=image&aid=98806&size=300x300&key=e53661841d7d352d&nocache=yes&type=fixnone

18809424717 发表于 2019-5-19 12:52

楼主是不是这个数据应该加载到声学网格上

18809424717 发表于 2019-5-19 12:55

楼主,最后是什么问题啊
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