[xXAhmedXx]

Dear all

I am running a transient CFD analysis of the NREL Phase VI wind turbine using FLUENT and I am looking forward to finding out how to monitor the torque value during the simulation. Is there a straightforward method using the GUI or I have to enter a specific UDF.

Thanks.

[Mess]

Originally Posted by xXAhmedXx

Dear all

I am running a transient CFD analysis of the NREL Phase VI wind turbine using FLUENT and I am looking forward to finding out how to monitor the torque value during the simulation. Is there a straightforward method using the GUI or I have to enter a specific UDF.

Thanks.

Hi. You can define a report under solution to monitor torque

[Mess]

That way u can monitor torque as solutions runs

[xXAhmedXx]

Originally Posted by Mess

That way u can monitor torque as solutions runs

Hi Mess

The problem is the solver monitor the moment coefficient not the torque force.

[Mess]

You can also get torque

[Mess]

From report definition. Its in Nm

[xXAhmedXx]

Originally Posted by Mess

From report definition. Its in Nm

Ok, let me check if I am doing it right. is it like this:

Report Definition > New > Force Report > Moment

Then, choosing the wall and define the moment center and axis

Finally, tick the report plot and print to console

Usually, I check the torque from reports when the simulation is done but now it's essential for me to monitor the value during the analysis.

Thanks

[Mess]

Yeah. Dont forget to write it as well. So u can open the file in excel or whatever u prefer

[Mess]

If u running 2d. Make sure to set correct depth in reference value. Otherwise, you dont have to edit anything there

[xXAhmedXx]

Originally Posted by Mess

Yeah. Dont forget to write it as well. So u can open the file in excel or whatever u prefer

Unfortunately, I am still getting the coefficient rather than the torque force.

[Mess]

Moment coefficients are computed, using the reference values specified in the Reference Values panel. The moment coefficient is defined as the moment divided by ½ ρv2AL* where the density, velocity, area, and length explicitly specified in the Reference Values panel. When you make the value of above equation equal to 1 then the output value for both*moment*andmoment coefficient*will be same

[Mess]

v is squared by the way

[xXAhmedXx]

Originally Posted by Mess

Moment coefficients are computed, using the reference values specified in the Reference Values panel. The moment coefficient is defined as the moment divided by ½ ρv2AL* where the density, velocity, area, and length explicitly specified in the Reference Values panel. When you make the value of above equation equal to 1 then the output value for both*moment*andmoment coefficient*will be same

Ok, I usually skip the reference panel during pre-processing. So from your comment, I have to specify the reference values in order to get the torque and its coefficient. I will check it and see. Thanks

[Mess]

Just make that the product is 1

[Mess]

Originally Posted by xXAhmedXx

Ok, I usually skip the reference panel during pre-processing. So from your comment, I have to specify the reference values in order to get the torque and its coefficient. I will check it and see. Thanks

The easy way is. Multiply the product of that equation with the coefficient to get torque