# Can coefficient of drag value be as large as 14?

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 November 7, 2018, 07:40 Can coefficient of drag value be as large as 14? #1 New Member   Vasu S B Join Date: Sep 2017 Posts: 2 Rep Power: 0 Hi people, I am new to Ansys Fluent, currently I am simulating the re-entry of a space module with following free stream conditions. 1. Inlet Mach number = 6 2. static pressure = 554.113 Pa 3. static temperature = 237.218 K The data corresponds to atmospheric condition at an altitude of 35 km. The simulation I am doing is steady state. When residuals converge to value below 1e-03, I got coefficient of drag around 14. The reference conditions used for calculating the drag coefficient are: 1. Area = 1 m^2 2. Velocity = 1853.159 m/s 3. Density = 0.008137 kg/m^3 Can somebody tell me, is this value of drag coefficient is acceptable?

 November 7, 2018, 09:45 #2 Senior Member   Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,679 Rep Power: 66 Is it right to use 1 m^2 for the reference area?

 November 7, 2018, 11:10 #3 New Member   Vasu S B Join Date: Sep 2017 Posts: 2 Rep Power: 0 Thank you sir! The area should be frontal area of the module.

 Tags drag, drag coefficient, entry capsule, fluent, steady state