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

Is it difficult to converge a CFD problem with pressure inlet and pressure outlet boundary conditions ?

Is it difficult to converge a CFD problem with pressure inlet and pressure outlet boundary conditions ? I am looking for the reason today's this. thanks in advance. thanks & Regards, Rajesh.

02 March 2016 9,311 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

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View