Looking for a quick help with Drag Coefficient using ANSYS Fluent

kesilowes · September 29, 2020, 13:46

I am mechanical engineering student and i love to create new projects for myself and clients as well but ANSYS is love that always strives me to go beyond my limits but this time, i am looking for a quick help where i lack the confidence due to an error which is repeatedly happening from a week.

While working on a drag reduction for trucks using ANSYS Fluent and there has been a problem with the drag coefficient of the truck.

However I am not getting much change between the drag coefficient values (1-2%). I am expecting a drag coefficient reduction between 10-20%. I am using the frontal area of the truck in the reference values, which is why I may not be seeing a change in drag coefficient.

How do I take the trucksack at the rear of the trailer into consideration when calculating the drag coefficient in ANSYS Fluent?

Thanks & Regards,
myloweslife

apsumo · October 1, 2020, 10:30

Have you achieved mesh conformity and tight convergance?

September 29, 2020, 13:46	Looking for a quick help with Drag Coefficient using ANSYS Fluent	#1
kesilowes New Member Unitedstates Join Date: Sep 2020 Posts: 1 Rep Power: 0	I am mechanical engineering student and i love to create new projects for myself and clients as well but ANSYS is love that always strives me to go beyond my limits but this time, i am looking for a quick help where i lack the confidence due to an error which is repeatedly happening from a week. While working on a drag reduction for trucks using ANSYS Fluent and there has been a problem with the drag coefficient of the truck. However I am not getting much change between the drag coefficient values (1-2%). I am expecting a drag coefficient reduction between 10-20%. I am using the frontal area of the truck in the reference values, which is why I may not be seeing a change in drag coefficient. How do I take the trucksack at the rear of the trailer into consideration when calculating the drag coefficient in ANSYS Fluent? Thanks & Regards, myloweslife

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October 1, 2020, 10:30		#2
apsumo New Member Join Date: Dec 2016 Posts: 4 Rep Power: 9	Have you achieved mesh conformity and tight convergance?