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Forum: CFX Today, 15:27
Replies: 0
Views: 18
Posted By Johan M
Frozen rotor converges but mixing plane diverges for high speed pump simulation

Hi All,
I am simulating a high speed centrifugal pump (rpm > 20000) that consists of three domains: an impeller, a rear leakage path, and a volute. Liquid oxygen is the fluid. The impeller and...
Forum: OpenFOAM Running, Solving & CFD Today, 14:57
Replies: 0
Views: 24
Posted By Kalabagh
simpleFoam convergence issue on turbulent sim (yPlus)

Hey there,


I want to simulate a Venturi pipe with a geometry a little bit complex. Fluid is water and Reynolds is fully turbulent. For now I'm working on a simplified geometry that consists just...
Forum: OpenFOAM Today, 14:56
Replies: 7
Views: 2,738
Posted By johnyoung39
A good commercial tool for geometry construction...

A good commercial tool for geometry construction in the field of construction is the total station. This advanced instrument integrates electronic distance measurement (EDM) with angle measurement,...
Forum: OpenFOAM Running, Solving & CFD Today, 13:50
Replies: 0
Views: 24
Posted By anubasu
Wall Roughness in interFoam for flow in a pipe

Dear All

I am trying to use a rough walled pipe (few different roughness values) to simulate flow in a pipe using the interfoam solver. Any one has an idea how to give roughness to pipes in...
Forum: OpenFOAM Running, Solving & CFD Today, 13:38
Replies: 15
Views: 250
Posted By boffin5
I thought I had it, but alas, it is still inop

After discovering that my controlDict listed the wrong solver, I changed it to rhoPorousSimpleFoam, and the simulation ran to completion! But I knew it was too good to be true.

It turns out that...
Forum: OpenFOAM Running, Solving & CFD Today, 10:04
Replies: 3
Views: 4,026
Posted By ngbidi
This thread is old, but apparently the problem is...

This thread is old, but apparently the problem is still there as I am experiencing this in OF-v2012. I think it is a bug in infiniteReactionRateI.H.
Have you found a solution to this?
Forum: SU2 Today, 06:58
Replies: 0
Views: 28
Posted By argix
Post Time varying Inlet BC in SU2

Hi everyone,
I am studying a case of jet impingement on a wall with a time-varying flow at the inlet. I have used compressible RANS and TOTAL_CONDITIONS as inlet BC. Specifically, I have set a...
Forum: Main CFD Forum Today, 06:36
Replies: 1
Views: 38
Posted By LuckyTran
The flow speed adds to the "speed of sound" when...

The flow speed adds to the "speed of sound" when they are in the same direction and minus when they are against so that the speed of propagation is U+c and U-c. This means the round trip time is...
Forum: CFX Today, 06:35
Replies: 1
Views: 36
Posted By ghorrocks
By natural gas, do you mean a mixture of methane...

By natural gas, do you mean a mixture of methane and ethane? Or some other mixture?

What are you trying to do in your simulation?
Forum: Hardware Today, 05:03
Replies: 3
Views: 137
Posted By wkernkamp
I am not the expert on what to get in Europe. A...

I am not the expert on what to get in Europe. A member flotus is. In the past a budget like yours allowed a dual epyc system. The memory bandwidth is critical for CFD and a large L3 cache...
Forum: Main CFD Forum Today, 03:59
Replies: 1
Views: 38
Posted By stagga
Flow rate impact on acoustic modes.

Hi,

I have recently started working with acoustics and have been assigned an acoustic induced vibration problem of a pipe spool.


I am trying to get an understanding of how flow rate impacts...
Forum: Hardware Today, 02:25
Replies: 3
Views: 137
Posted By Fth9
Which software do you intend to use? Fluent,...

Which software do you intend to use?
Fluent, CFX, OpenFOAM
Workbench Meshing, Fluent Meshing

Are you limited by license constraints? I.e. does your software license only allow you to run on N...
Forum: Hardware Today, 00:16
Replies: 3
Views: 137
Posted By wkernkamp
You should fill out the specially prepared...

You should fill out the specially prepared questionair here: https://www.cfd-online.com/Forums/hardware/234076-general-recommendations-cfd-hardware-wip.html


With your answers, knowledgeable...
Forum: CFX Yesterday, 23:41
Replies: 1
Views: 36
Posted By Fat shady
Post The mixture working medium was imported into CFX for simulation

I would like to know how to import CFX PRE(Materials) for simulation calculation using mixture working medium.At present, I can only use RGP generator to generate methane pure matter file to import...
Forum: CONVERGE Yesterday, 23:40
Replies: 2
Views: 93
Posted By Shen Wu
VS errors

Dear Killian,
Sorry for the late reply.
The Converge versions in Windows and Linux are different (Linux: 3024 vs. windows 3.17). Following the steps in UDF Manual 3.0, I just copy the .src and...
Forum: STAR-CCM+ Yesterday, 21:55
Replies: 0
Views: 26
Posted By Cheong
VOF solidification-melting with porous media - Residual amplitude keep growing

Good morning, Good afternoon, and Good evening

I'm just trying to simulate melting of paraffin wax in metal foam using VOF model with implicit unsteady in 2D. I made two regions-pure paraffin...
Forum: OpenFOAM Bugs Yesterday, 21:40
Replies: 4
Views: 575
Posted By cesarsand
Funciono, muchas gracias por la ayuda.

Funciono, muchas gracias por la ayuda.
Forum: Fluent UDF and Scheme Programming Yesterday, 21:09
Replies: 3
Views: 184
Posted By Yijun Lu
Not yet! Here are the problems I met. ...

Not yet!

Here are the problems I met.

When I complied this UDF in FLUENT successfully, I take the following steps:

(1) define the numbers of UDM and UDS, which are 5 and 2 respectively.
...
Forum: Fluent UDF and Scheme Programming Yesterday, 14:08
Replies: 3
Views: 184
Posted By Jishan Ahmed
Solved your problem?

Solved your problem?
Forum: Main CFD Forum Yesterday, 13:25
Replies: 2
Views: 456
Posted By mikenike
I was talking to a friend about finding new ways...

I was talking to a friend about finding new ways to entertain myself at home. He suggested trying online casinos. I found rt casino on site https://thepokiesnet.casino/ and was pleasantly surprised....
Forum: OpenFOAM Meshing & Mesh Conversion Yesterday, 12:21
Replies: 0
Views: 38
Posted By maxning
adjecent face cell count and gradient mismatch

I am making a blockmesh file for a 2d geometry (see geometry in the attached png file). However, the mismatching error presists despite making the two adjecent sides having the same gradient and cell...
Forum: Hardware Yesterday, 10:50
Replies: 3
Views: 137
Posted By Fth9
Workstation advice for combustion modeling using LES

Hello

I want to work on turbulent combustion, large eddy simulation, and spray combustion with Ansys Fluent. What kind of workstation would you recommend for solving a model with around 10 million...
Forum: OpenFOAM Journal Yesterday, 10:35
Replies: 4
Views: 394
Posted By AhmedHamada
Hi Dimitris, You can conduct this in multiple...

Hi Dimitris,
You can conduct this in multiple ways:
1) use some wave model instead of the wave maker.

If you want to add the wave make motion in the simulation
2) use multiple overset (Front)...
Forum: OpenFOAM Yesterday, 08:18
Replies: 2
Views: 46
Posted By Chintan-21
Thank you very much

Thank you very much
Forum: OpenFOAM Running, Solving & CFD Yesterday, 07:00
Replies: 4
Views: 56
Posted By scfd
Post In the output of splitMeshRegions, everything is...

In the output of splitMeshRegions, everything is as it should be. I have never encountered something like this before. I feel like if I change my method of creating the inlet and outlet, I might get...
Showing results 1 to 25 of 244
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