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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: alibaig1991

Forum: Main CFD Forum April 8, 2018, 06:12

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, Thank you for replying to all my... Dear Sir, Thank you for replying to all my queries. I do agree with you that I am not following any systematic approach. About the second part of your reply,the scheme I am working on is an...

Forum: Main CFD Forum April 8, 2018, 05:06

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, I am solving highly convective... Dear Sir, I am solving highly convective convection-diffusion equation in 2 dimensions. The image in first post shows the weight values for first derivative only (d/dx). These weight values are...

Forum: Main CFD Forum April 8, 2018, 04:16

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, The weights for upstream and... Dear Sir, The weights for upstream and downstream are not of the same order of magnitude, at least for 1D. I have not tried any numerical test, however, I have solved a few numerical examples...

Forum: Main CFD Forum April 8, 2018, 03:18

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, The weights for discretization of... Dear Sir, The weights for discretization of spatial derivatives are obtained using the meshless method, whereas, fro time integration, I shall use Euler explicit method.

Forum: Main CFD Forum April 7, 2018, 08:40

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, At last we are on same page. :) ... Dear Sir, At last we are on same page. :) Yes, the weight values are non-symmetric and I am using a meshless method. When using non-symmetric weights for 1D problem, the weights for...

Forum: Main CFD Forum April 7, 2018, 08:18

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Sir, The reference point (point... Dear Sir, The reference point (point at which I want to approximate derivatives) is the the center point in the first figure, i.e., (0,0). I guess what you mean is that I should include...

Forum: Main CFD Forum April 7, 2018, 07:54

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Dear Mr. FMDenaro, Thank you for replying. ... Dear Mr. FMDenaro, Thank you for replying. Regarding you statement about whether it is 1D or 2D, the scheme is 2D and is not applied separately on x and y direction. I am trying to create a...

Forum: Main CFD Forum April 7, 2018, 06:05

Replies: 15 Weights for 2-dimensional upwind finite difference scheme Views: 1,210 Posted By alibaig1991 Weights for 2-dimensional upwind finite difference scheme Dear all, Consider a 5x5 mesh of uniform spacing, with velocity U=[1,1]. What should be the restrictions on the weight values on the nodes for scheme to be an upwind scheme? I have tried to...

Showing results 1 to 8 of 8

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