20 Questions 212 Answers 0 Followers
Questions related from Rajesh Alayil
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...
08 August 2016 9,721 15 View
Can we get the information about flow separation using contours/plots/iso surfaces etc from ANSYS Fluent ? I understand how flow separation happens and i am interested in finding it out using...
06 June 2016 3,128 4 View
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 ?
06 June 2016 8,798 13 View
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.
03 March 2016 9,453 6 View
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...
03 March 2016 5,165 6 View
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.
01 January 2016 8,389 0 View
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...
12 December 2015 1,069 11 View
Is it possible to simulate flow induced corrosion using ANSYS Fluent, if yes how ? Please share ideas or articles. Thanks in advance.
10 October 2015 8,907 1 View
Instead of starting with random guesses, is it beneficial to feed a know best into the population, while using genetic algorithm as the optimizing technique for a optimization problem. I would...
02 February 2015 8,043 14 View
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...
01 January 2015 6,117 14 View
I am aware of the individual definitions of both static and absolute pressure. Will the magnitude of static and absolute pressure be the same, even though definition wise they represent different...
11 November 2014 2,963 30 View
Is there any method by which the thermal inertia of a piece (rectangular) of material be increased. Material can not be altered; dimensions, shape etc can be played with.
11 November 2014 7,760 36 View
What does a negative heat transfer coefficient physically means or in other words what physics does a negative heat transfer coefficient impliy?
10 October 2014 8,409 11 View
Does "Coefficient of Determination (R-Square)" provides sufficient information on how will the data fits a statistical model (line/curve) in case of non-linear regression ? I would like to know...
10 October 2014 5,297 28 View
I read recently that "it is not possible to get second order accuracy at the boundaries using finite difference method, were as same is possible with finite volume method. Which by the way is one...
10 October 2014 10,142 36 View
Will the condensate formed after condensation, have any temperature change in them? My point is, during phase change will there be energy release? What happens to this energy? Will it be taken by...
09 September 2014 8,255 42 View
Can anyone give me an in depth knowledge regarding tandem compressors. How these works and what are the theory behind it ? Any material links are highly appreciated.
08 August 2014 6,135 2 View
Depending on the robustness of the solver, every commercial cfd software are limited to an maximum skewness or for that matter aspect ratio that they can support; for eg a skewness of 0.98 to...
08 August 2014 7,798 14 View
Can anyone give me the physics behind characteristic length? I know that it is used to calculate Re for external flows and it comes form the viscous term. But what I am actually looking for is the...
07 July 2014 2,567 8 View
I am working on mixing flow problem, where two separate flows mixes at a junction, one at high temperature (super heated) and other at lower temperature (saturated), both at same pressure. They...
07 July 2014 424 6 View
