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Forum: FLUENT

November 21, 2013, 08:47

Replies: 8

2 Phase flow simulation in a T-junction microchannel

Views: 2,737

Posted By flotus1

Would it be such a mayor inconvenience to reduce...

Would it be such a mayor inconvenience to reduce the time step size to lets say 10e-8s just to see if the error is really related to the time step size?

Forum: FLUENT

November 14, 2013, 03:20

Replies: 8

2 Phase flow simulation in a T-junction microchannel

Views: 2,737

Posted By flotus1

The Courant number is defined as C =...

The Courant number is defined as

C = \frac{u \, \Delta t}{\Delta x} thus \Delta t = \frac{C \, \Delta x}{u}

where \Delta x is the size of a cell. Just to make sure, decrease the time step...

Forum: FLUENT

November 13, 2013, 03:36

Replies: 8

2 Phase flow simulation in a T-junction microchannel

Views: 2,737

Posted By flotus1

Did you estimate the time step size necessary to...

Did you estimate the time step size necessary to achieve a Courant number below 250?
When you say "micro channel" and the velocity magnitude is around 2.5 m/s, I estimate a time step size in the...

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