Why does the CFD results change with different initialization techniques ?

I have recently observed that the CFD results shows significant variations with different initialization techniques (mainly standard, fmg and hybrid). What could be the technical reason for this...

07 August 2016 9,605 15 View

Does 'symmetry'and periodic'boundary conditions in CFD (Fluent solver) behaves the same?

Even though theoretically 'symmetry' and 'periodic' boundary conditions are totally different, i found that the CFD results with either of them are very similar. Why it is so ?

05 June 2016 8,685 13 View

How to find whether there is flow separation or not using ANSYS Fluent ?

05 June 2016 2,982 4 View

For numerical simulations, which type of mesh (hexahedral or polyhedral) yields better results ?

Recently i read couple of articles on the mesh in case of numerical simulation. One claimed, hex meshes yields better results and the other claims it is poly mesh that yields better results. Which...

02 March 2016 5,046 6 View

Anyone working on CFD analysis of micro-channel heat exchangers ?

I am looking for works or documents regarding CFD analysis of micro-channel heat exchangers. Any documents would be helpful. Thanks in advance. Regards, Rajesh.

31 December 2015 8,270 0 View

How does a coil perform when operating as an evaporator and when operating as a condenser ?

Does a same coil (heat exchanger) show different performance when used as evaporator and when used as condenser ? I would like to know this in both theoretical and practical case ? I expect the...

11 December 2015 956 11 View

Corrosion modeling using ANSYS Fluent ?

Is it possible to simulate flow induced corrosion using ANSYS Fluent, if yes how ? Please share ideas or articles. Thanks in advance.

09 October 2015 8,753 1 View

How beneficial is it to initialize a genetic algorithm problem with a know best ?

01 February 2015 7,941 14 View

How can I do parallel computing in python 2.7 using MPI?

I have written a python code to carry out genetic algorithm optimization, but it is too slow. I would like to know how to run the same in parallel ? For more clarity, another python code will be...

31 December 2014 5,998 14 View

Are static pressure and absolute pressure the same in magnitude?

10 November 2014 2,775 30 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 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

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

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

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

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 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