CFD modelling of centrifugal compressors?

More Brett Dewar's questions See All

Hi all. I was wondering if anyone knows of any training providers for Ansys Turbomachinery suite? Anything online, perhaps cost effective literature?

05 June 2016 5,234 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

fatal error

16 June 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

Hi In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein? I got this error in the add-ion stage: Fatal error "./ amber99sb-ildn-HHH.ff / force...

01 March 2021 8,747 4 View

Ilya Evdokimov

Depends what sort of phenomena you want to catch.

Anyway, hexa, flow-oriented mesh is the best choice in any CFD from ANSYS to OpenFOAM

Franco Concli

OpenFOAM already has some implemented (even if simplyfied) tutorials about turbomachinery. Have a loot in the /tut folder and run the tutorial. You can use many different strategies starting from MRF and anding with sliding meshes.

Franco

Brett Dewar

Thanks for the feedback guys. I've had a look at some different solvers and they all seem pretty good. OpenFOAM has a cost associated with the turbo module, not that any others dont mind you!

I was perhaps a little more interested in the technical side of things. For example if anyone has experience using a particular modelling method like using one turbulence model and then finding that under certain conditions its accurate but not under other conditions etc.....