low values of Coeff of lift

vmlxb6 · February 13, 2011, 18:32

I would be very thankful if you could help me.

I am trying to simulate a flow over a stationary cylinder at Reynolds number of 200.
My lift coeff are way smaller than expected. My mesh looks fine, case is laminar, Re = 200, convergence is good. I dont know where the problem is ???

Q2.) How can I export the values of lift/drag force to a txt or a .dat file from fluent ???

Thank you very much.

DoHander · February 13, 2011, 18:54

In the Force monitor panel just check the Write option, Fluent will save Cl at every iteration/time step for you in a text file.

Do

vmlxb6 · February 13, 2011, 18:57

I have all the data files with me for every iterations. The question is how do I get the lift force values and plot it against time ???

vmlxb6 · February 13, 2011, 19:55

Instead of getting all the values of Cl can I get all values of Forces instead ???

I am not sure if the values I am plugging in the reference value table is correct or not.

Thanks dude for the reply.

February 13, 2011, 18:32	low values of Coeff of lift	#1
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 16	I would be very thankful if you could help me. I am trying to simulate a flow over a stationary cylinder at Reynolds number of 200. My lift coeff are way smaller than expected. My mesh looks fine, case is laminar, Re = 200, convergence is good. I dont know where the problem is ??? Q2.) How can I export the values of lift/drag force to a txt or a .dat file from fluent ??? Thank you very much.

February 13, 2011, 19:55	@ Dohander	#4
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 16	Instead of getting all the values of Cl can I get all values of Forces instead ??? I am not sure if the values I am plugging in the reference value table is correct or not. Thanks dude for the reply.

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February 13, 2011, 18:54		#2
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	In the Force monitor panel just check the Write option, Fluent will save Cl at every iteration/time step for you in a text file. Do

February 13, 2011, 18:57		#3
vmlxb6 Senior Member Ugly Kid Joe Join Date: Aug 2010 Posts: 193 Rep Power: 16	I have all the data files with me for every iterations. The question is how do I get the lift force values and plot it against time ???