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Forum: Main CFD Forum

August 21, 2012, 07:30

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

First let me clear that it is not fine but it...

First let me clear that it is not fine but it gives similar results what LDC should give.

Problems:
the residual of pressure is not going beyond 0.00012.
it take urfp =0.0001 if i use 0.001 it...

Forum: Main CFD Forum

August 21, 2012, 05:54

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

The problem with convergence is that when i let...

The problem with convergence is that when i let the program to iterate to go to more then about 8,000 the streamlines become distorted. As for pressure i solve it explicitly. as given below

Kindly...

Forum: Main CFD Forum

August 20, 2012, 17:55

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Hi Every one, Thanks for all your support...

Hi Every one,

Thanks for all your support tonight i have seen results that i was hopping to see for about more then a week. and some how i have solve the Lid Driven Cavity by simple algorithm. I...

Forum: Main CFD Forum

August 19, 2012, 12:39

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Yes i got the code . and its approach and mine is...

Yes i got the code . and its approach and mine is the same i.e. hi-bride scheme.

why we need SIMPLE Algorithm when We have Artificial compressibility?:confused:

Forum: Main CFD Forum

August 19, 2012, 08:46

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

I don't understand i did exactly what is written...

I don't understand i did exactly what is written in book. it didn't work. I did the same think using artificial compressibility and it worked but using SIMPLE method it did not. the only thing left...

Forum: Main CFD Forum

August 16, 2012, 15:04

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

what is the good method for under relaxation do i...

what is the good method for under relaxation do i use
p^{new}= p^{*}+\alpha_{p} p^{'}

u^{new}= \alpha_{u} u+(1-\alpha_{u}) u^{n-1}

v^{new}= \alpha_{v} v+(1-\alpha_{v}) v^{n-1}

or use URF...

Forum: Main CFD Forum

August 16, 2012, 04:39

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Thanks Michail, i need to know what is the best...

Thanks Michail, i need to know what is the best time to add under relaxation factor in the calculation of p, u, and v. now when i revisit the literature i find out that it is the under relaxation...

Forum: Main CFD Forum

August 15, 2012, 11:46

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

If you implemented versteeks method then would...

If you implemented versteeks method then would realy like to take a look at it. you may give me the like of send me the code at tojunaidahmad@hotmail.com

Regards
Junaid

Forum: Main CFD Forum

August 13, 2012, 06:31

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Thanks, I am following verseek's book, and...

Thanks,

I am following verseek's book, and in it d(i-1,j)=A(i-1,j)/ap(i-1,j)

A(i-1,j) is area of west face
ap(i-1,j) is central coefficient of velocity
the problem is when i calculate ap by...

Forum: Main CFD Forum

August 12, 2012, 22:09

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

This is Pressure Correction File. First let me...

This is Pressure Correction File. First let me tell you that i have no working knowledge of FORTRAN So its hard for me to understand this. If I am not wrong then its your code. it will be very help...

Forum: Main CFD Forum

August 12, 2012, 12:00

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Yes your are correct yours make more sense. Mine...

Yes your are correct yours make more sense. Mine your are same.
So any thoughts how to calculate d

Forum: Main CFD Forum

August 11, 2012, 08:52

Replies: 40

Implementation of Simple Algorithm

Views: 5,167

Posted By JunaidAhmad

Implementation of Simple Algorithm

HI to All,

I am trying to solve Lid Driven Cavity problem using Finite Volume Method, for that i want to use Simple Algorithm. I have all ready solve LDC using Artificial Compressibility now i...

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