Approach to learning UDF programming?

CFD-student · December 12, 2011, 07:02

Hi,
Im currently studying fluid dynamics, transport processes etc. Furthermore I have basic knowledge about handling fluent and the ANSYS workbench. However to further improve my ability in simulation with fluent I feel that I need to be able to write my own UDF:s, my programming knowledge is limited to MatLab. Therefore I would be very if happy if someone could suggest an approach to lear how to write UDF:s in Fluent? I understand that i probably must learn C? Which books or resources would you recommend for that?

Best regards!
CFD-student

pghoseju · December 13, 2011, 00:02

I am currently working on spray modelling(axi-symmetry) by using species transportation+DPM in Fluent 13.0. i want to know that
1.Species transport: diffusion energy source should be disabled/enabled?
2.In injection, what is the relation between the point properties
a.Diameter
b.Velocity magnitude
c.Radius
d.Total flow rate
3. In boundary condition: inlet: species: what should be the mass fraction of the fuel .0 or1 or inbetween0-1.

Best regards!
CFD-student
Prakash Ghose

December 12, 2011, 07:02	Approach to learning UDF programming?	#1
CFD-student New Member Join Date: Dec 2011 Location: Sweden Posts: 13 Rep Power: 3	Hi, Im currently studying fluid dynamics, transport processes etc. Furthermore I have basic knowledge about handling fluent and the ANSYS workbench. However to further improve my ability in simulation with fluent I feel that I need to be able to write my own UDF:s, my programming knowledge is limited to MatLab. Therefore I would be very if happy if someone could suggest an approach to lear how to write UDF:s in Fluent? I understand that i probably must learn C? Which books or resources would you recommend for that? Best regards! CFD-student

December 13, 2011, 00:02	spray modelling	#2
pghoseju New Member Prakash Ghose Join Date: Dec 2011 Posts: 20 Rep Power: 3	I am currently working on spray modelling(axi-symmetry) by using species transportation+DPM in Fluent 13.0. i want to know that 1.Species transport: diffusion energy source should be disabled/enabled? 2.In injection, what is the relation between the point properties a.Diameter b.Velocity magnitude c.Radius d.Total flow rate 3. In boundary condition: inlet: species: what should be the mass fraction of the fuel .0 or1 or inbetween0-1. Best regards! CFD-student Prakash Ghose

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