WindLee 发表于 2010-4-21 19:54

回复 13楼 pengweicai 的帖子

可以直接利用gambit将网格导出为bdf格式

feihu0105 发表于 2010-4-23 10:40

看了fluent帮助文件里和sysnoise相关的内容，好像是说要想把fluent算的流场导入sysnoise，就不能在fluent计算时启用FW-H方程，而是在sysnoise里根据流场数据重新计算声场，而且要把输出的坐标格式改为圆柱坐标系，因为fluent输出时默认的是笛卡尔坐标系。也没尝试过，大家共同讨论一下啊。
Exporting Source Data Without Enabling the FW-H Model


You can also export sound source data for use with SYSNOISE without having to enable the Ffowcs Williams and Hawkings (FW-H) model. You will still need to specify source surfaces (see Section21.3.2), as .index and .asd files are required by SYSNOISE. In addition, you can choose fluid zones as emission sources if you want to export quadrupole sources. To enable the selection of fluid zones as sources, use the


define --- modelsacousticsexport-volumetric-sources?


text command and change the selection to yes.

SYSNOISE also requires centroid data for source zones that are being exported.

For fan noise calculations, once you have specified the source zones in the Acoustic Sources panel and you have selected Export Acoustic Source Data from the Acoustic Model panel, you can export geometry in cylindrical coordinates by using the


definemodelsacousticscylindrical-export?


text command and changing the selection to yes. By default, FLUENT exports source zones for SYSNOISE in Cartesian coordinates.

You can then export the centroid data to a .data file using the following text command:


definemodelsacousticswrite-centroid-info


Since you will not be using the FW-H model to compute signals, you will not need to specify any acoustic model parameters or receiver locations. Also, you will not be able to turn on the Compute Acoustic Signals Simultaneously option in the Acoustics Model panel, and Acoustic Signals... will not be available in the Solve menu.

cumt_leilei 发表于 2010-5-23 14:24

毕业设计 要做风机内部流场的噪声模拟就是想用SSN 来模拟噪声 看来要学习的东西还很多啊。。哪个大虾能告诉哪里有买到软件或者下载到的？:@(

ljwfskd 发表于 2010-6-6 22:00

学习一下

:victory: :lol

freebeita 发表于 2010-6-9 15:12

学习学习，我也做风机噪声的，也是问题很多，fluent可以在file/export里面导出nastran文件，可以成功导入sysnoise

freebeita 发表于 2010-6-9 15:14

“如果让我逮到一个Sysnoise的设计人员，我一定要问问他，到底你见的Fluent是啥样的！”这句话太经典了！我也想问问他这句话

piaoxue86 发表于 2010-9-16 23:53

谢谢楼主了！！

defantasy 发表于 2010-10-7 13:17

额，这个帖子必须顶啊

mapple1286 发表于 2010-10-7 20:46

{:{40}:}{:{39}:}

ppbul 发表于 2010-10-11 23:43

路过学习中

KittyKatherine 发表于 2010-10-18 22:21

来看看，这个问题到底解决了没有

kty 发表于 2010-10-19 11:53

怎么半，好像还是没解

马富银 发表于 2010-10-24 14:14

我也试了很久，不行。后来遇到一个结构噪声的问题，导入Abaqus的计算结果或网格时均导不进去，后来用Hyperworks划分了网格分别导出为Abaqus的Inp文件和Nastran的Bdf文件，然后在导，发现Inp还是导不进去，bdf的可以导进去。这说明Sysnoise提供的接口存在缺陷，这种说法在SimWe上也有人提出过。

shuren905 发表于 2010-11-18 11:06

真好，请问fluent和vaone的借口程序谁有啊！~

mapple1286 发表于 2010-11-29 20:38

谢谢楼主了！！{:{39}:}
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