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Mixing time:Tracer disappearing

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Old   May 19, 2003, 11:29
Default Re: Mixing time:Tracer disappearing
  #21
Nyatoto
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Hi all,

I went for an overkill!! And I guess some people will disagree with my actions. Here is a summary of my systematic actions (done one at atime). -Refined the grids -doubled the default inner iterations -Used courant no of 5 and backward quadratic time scheme (as recommended by Jan, Thanks).

Then all the above set with.. -24,000 Total iterations!!! (that is NSTEP=600, MAXIT=40, DT=0.002sec, 60 impeller rev.)

Convergence seems better (It is still going on since Saturday 3.00pm, it is now 5.10 pm Monday).

As I had mentioned before, convergence is just one of the indicator of a good solution. I will inject my tracer and see what comes out now.

I will filter later some of the un necessary loads I have given my machine.

Many thanks John, Jan and KubaB. I will be back again with the tracer proper, after such a long suspension of the same.

regards nyatoto
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Old   July 13, 2013, 10:45
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behrooz
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hi
i am working in stirred tank . i want to calculate mixing time with tracer
i have not any idea to do it.can u help me?
i work with fluent.
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Old   July 13, 2013, 11:02
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hi all
i want to calculate mixing time with tracer.i do not have any idea to do it. can any one help me ? i need it extremly
thanks
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Old   July 13, 2013, 11:06
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hi all
i want to calculate mixing time in stirred vessel with tracer
i do not have any idea to do it.can any one help me?
thanks
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Old   July 13, 2013, 11:12
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hi all
i want to calculate mixing time in stirred vessel with tracer
i do not have any idea to do it.can any one help me?
thanks
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Old   July 13, 2013, 11:19
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hi all
i want to calculate mixing time in stirred vessel with tracer
i do not have any idea to do it.can any one help me?
thanks
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Old   July 13, 2013, 11:22
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  #27
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hi all
i want to calculate mixing time in stirred vessel with tracer
i do not have any idea to do it.can any one help me?i work via fluent
thanks
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Old   July 13, 2013, 18:44
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Old   July 16, 2013, 07:44
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thanks ghorrocks
can u give me exactly this address?( i do not found it)
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