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Negative Drag Co-efficient

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Old   June 2, 2020, 02:56
Default Negative Drag Co-efficient
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Greetings.
I am a newbie in SU2 and I was trying to simulate a NACA0012 airfoil with AR=6 in SU2. I created the mesh in pointwise and used ONERAM6 wing tutorial presented in the SU2 tutorials section. My solution does converge and I get an increasing trend in lift co-efficient with increase in angle of attack. However, my drag co-efficient comes out to be negative (about -1.5). Any thoughts where am I going wrong? Thanks in advance.
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Old   June 23, 2020, 11:42
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Quote:
Originally Posted by punyaplaban View Post
Greetings.
I am a newbie in SU2 and I was trying to simulate a NACA0012 airfoil with AR=6 in SU2. I created the mesh in pointwise and used ONERAM6 wing tutorial presented in the SU2 tutorials section. My solution does converge and I get an increasing trend in lift co-efficient with increase in angle of attack. However, my drag co-efficient comes out to be negative (about -1.5). Any thoughts where am I going wrong? Thanks in advance.
Can you post any files that might be useful? Especially the SU2 config file would be helpful.
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