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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: Wolfram

Forum: CFX January 25, 2019, 04:36

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram I found the location of high residuals with the... I found the location of high residuals with the help of isovolume - i hope this is also feasable. The cells of high residuals are located in the tip region and the path of the well known "tip...

Forum: CFX January 24, 2019, 00:45

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram I am using Automatic Timescale with a Timescale... I am using Automatic Timescale with a Timescale Factor

Forum: CFX January 23, 2019, 06:37

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Although your answer does not solve my issue, it... Although your answer does not solve my issue, it keeps at least my motivation high ;)

Forum: CFX January 23, 2019, 00:43

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram True. The only thing i am wondering about... True. The only thing i am wondering about are the different results of the simulations in dependency of the initial values. Not only the huge deviation of head, especially the different flow...

Forum: CFX January 22, 2019, 05:23

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Dear ghorrocks, i have tried running it... Dear ghorrocks, i have tried running it transient. With an adaptive timestep, controlled by a max Courant number of 5. The head is not "bouncy" anymore as in the steady simulations (it was...

Forum: CFX January 21, 2019, 07:35

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Dear ghorrocks, the amount of partitions and... Dear ghorrocks, the amount of partitions and domains are due to interpolating different initial values with different domains and so on new domains. But the discussed behaviour is unchanged for...

Forum: CFX January 21, 2019, 04:36

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Dear ghorrocks, i apologize for not... Dear ghorrocks, i apologize for not uploading a picture of the geometry. It is a mixed-flow fan with 7 impeller blades and 13 guidewheel vanes. The performance curve of the test rig (solid...

Forum: CFX January 21, 2019, 00:55

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Dear ghorrocks, the images should be... Dear ghorrocks, the images should be available now. I combed the forum before writing my post above, due to this i found your link several times and memorized it - i assume this is your...

Forum: CFX January 18, 2019, 11:19

Replies: 19 Fan performance curve: Deviation to test results depending on initial values Views: 1,414 Posted By Wolfram Fan performance curve: Deviation to test results depending on initial values Dear all, i am simulating a mixed flow fan with a diameter of approx. 250mm, around 3100RPM, steady simulation, frozen rotor and k-epsilon turbulence model. The domains and boundaries are shown...

Showing results 1 to 9 of 9

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