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NASA Test Cases: NACA4412 Cd Convergence Comparison

Analysis of NACA4412 test cases by NASA highlighting Cd convergence between 40000 and 20000 degrees of freedom. Findings show faster convergence with adaptation and P2 method. Near Wake results are inconclusive due to lift and drag convergence challenges.

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NASA Test Cases: NACA4412 Cd Convergence Comparison

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  1. February 14, 2014NASA Test Cases - Continued

  2. NACA4412

  3. Difference in Cd between 40000 dof and 20000 dof ~ 5e-05

  4. Near Wake

  5. Difference in Cd between 40000 dof and 20000 dof ~ 2e-04

  6. Plot2D ResultsNACA4412

  7. Near Wake

  8. Some Conclusions • NACA4412 – with adaptation and P2, we can obtain convergence for Cd and Cl with only about 15,000 dof. Without adaptation and P2, convergence occurs at about 40,000 dof. • Near Wake – Results are inconclusive because lift and drag aren’t converging

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