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Applicability on Mixed Errors
To test the applicability of the sensors on mixed errors the test-case RAE 2822 was examined. In figure 26 the friction coefficients of the test-cases with the separated and combined errors are compared with the reference test-case. The errors in the expansion ratio and the wall distance leads to differences in the prediction of the
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Fig. 24 ONERA M6, coarse grid — characteristic points of flow separation and reattachment and vortex separation at the airfoil tip |
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Fig. 25 RAE 2822 case9 — identification of the area of a compression shock |
friction coefficient Cf and in case of the mixed error both errors annul each other. With correction of the predicted friction by the error function implemented in TAU the differences are clearly reduced (fig. 27).
