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Obtained significantly different coefficients from the author's wind tunnel test |
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January 12, 2023, 12:04 |
Obtained significantly different coefficients from the author's wind tunnel test
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New Member
Renz
Join Date: Jan 2023
Posts: 7
Rep Power: 3 |
Hello, I'm new to this software; could you possibly assist me in finishing my undergraduate thesis? This is the only activity I must complete in order for me to graduate. I am currently attempting to obtain lift and drag coefficients @ 100k Reynolds number from my CFD 2D Simulation using Fluent ANSYS. However, I obtained significantly different coefficients from the author's wind tunnel test results (for validation). I used the following setup:
////// Everything that I didn’t mention were set to their respective default settings and values ////// \\\ Other figures are uploaded on the reply section because the # of uploaded pictures are limited.\\\\ To vary the angle of attack, the airfoil is positioned horizontally while modifying the flow direction in both the X and Y components using the cosines and sines of radians of the angle of attacks. For example: cos [radian (1°)], and sine [radian (1°)] – I saw this on YOUTUBE. A NO-slip conditions was applied to the airfoil surface. I am using a rectangular-type domain with structured boundary layer grid around the airfoil and an unstructured grid in the outer domain, as illustrated below in Fig 7. It contains over 52k components in total. |
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