Messages

16

Fluent / how to perform swirl ratio calculation in Fluent

« on: February 04, 2012, 07:46:29 PM »

I want to calculate swirl ratio. Does any one know how I can calculate it?

Thanks.

17

Fluent / Compute Residence Time Distribution (RTD) for stirred tanks in Fluent

« on: February 04, 2012, 06:19:03 PM »

Hi,

How do I compute Residence Time Distribution (RTD) for stirred tanks with inlet and outlet?

Thanks.

18

Fluent / How to get time average of the variables in Fluent transient simulation

« on: January 25, 2012, 04:14:07 PM »

Hi everyone,

I want to get the time averaged (say ~15s average) of the variables like velocity profiles, temperature, mass flow at a cross-section of the geometry.

I can stop fluent simulation and get the value after every few time step iterations and then average it out, but that will be too time consuming and tedious. Is there anything I can do to get the time averaged properties for the required time span?

Thank you in advance.

19

gPROMS / Re: goCFD or Multizonal GProms-CFD which one should I use?

« on: January 25, 2012, 04:02:04 PM »

goCFD is recommended when you have very small of the order of the size of the mesh in CFD. What it does it it takes information from CFD in each cell and solves the defined equations describing the process like crystallization, heat and mass transfer, reactions etc.. in gProms and sends it to the CFD again.

In the multi zonal modelling, you specify the zones yourself in gproms. The zones are of the order of 10 to 100 (comparably many times coarser than the CFD mesh). Each zone takes the information from CFD like fluid flow hydrodynamics and solves the model equations describing the process like heat transfer, mass transfer etc. in gPROMS.