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Forum: Main CFD Forum

April 21, 2013, 23:38

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

Actually when i am solving for NON DIMENSIONAL...

Actually when i am solving for NON DIMENSIONAL form of governing equation.... the way i have defined non dim temperature... the value is ZERO at the inlet....

Fluent has something that they call...

Forum: Main CFD Forum

April 14, 2013, 16:12

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

I am actually trying to ultimately solve flow of...

I am actually trying to ultimately solve flow of fluid around a heated cylinder...

The problem is that when i try and simulate for non dimensional equations using Fluent for the following...

Forum: Main CFD Forum

April 12, 2013, 04:49

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

I am extending study of flow over circular...

I am extending study of flow over circular cylinder for Re=40, considering heat transfer along with fluid flow.

I am solving non dimensional form of steady, 2-D energy equation with constant fluid...

Forum: Main CFD Forum

April 8, 2013, 04:33

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

No.... by how large is large what I actually...

No.... by how large is large what I actually meant is that would the upstream distance be related to the Reynolds number?

If so then how dose one determine the upstream distance other than taking...

Forum: Main CFD Forum

April 8, 2013, 00:00

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

May be the trouble with the solution that i had...

May be the trouble with the solution that i had got was...

with the lower convergence criteria.... the solution still had error and so the vortices downstream of the cylinder were not captured... ...

Forum: Main CFD Forum

April 6, 2013, 02:17

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

Hi, The convergence criteria i have...

Hi,

The convergence criteria i have specified for simulation is 0.0001 for mass and momentum conservation.

For coarse as well as the fine mesh the residual is below the convergence criteria as...

Forum: Main CFD Forum

April 5, 2013, 02:27

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

The file size if in MB and cant be attached. ...

The file size if in MB and cant be attached.

Can i have your email ID. Will send them as an email attachment

Thanks

Forum: Main CFD Forum

April 5, 2013, 01:25

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

Hi, Am attaching pic of mesh next to...

Hi,

Am attaching pic of mesh next to cylinder.

Coarse mesh simulation shows separation, where as fine mesh dose not.

Have taken due care to scale the mesh properly before setting up the case...

Forum: Main CFD Forum

April 4, 2013, 05:50

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

Hi, Am attaching image of vector plot next...

Hi,

Am attaching image of vector plot next to cylinder surface... one with coarse mesh shows flow separation.

However, on refining the mesh the flow separation is not captured and the solution...

Forum: Main CFD Forum

April 3, 2013, 23:48

Replies: 25

Fluent + flow past cylinder at Re=40

Views: 4,069

Posted By m.vegad

Fluent + flow past cylinder at Re=40

Hi,
I am trying to simulate steady flow around a circular cylinder for Re=40 (two dimensional)

For a coarse mesh, things are fine and there is flow separation.

However.... to check mesh...

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