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Numerical calculation of transonic boattail flow (1975)

Chow, W. L. ; Anderson, B. H. ; Bober, L. J.

In: CASI

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Publication Date: 2019-06-27

Description: A viscid-inviscid interaction procedure for the calculation of subsonic and transonic flow over a boattail was developed. This method couples a finite-difference inviscid analysis with an integral boundary-layer technique. Results indicate that the effect of the boundary layer is as important as an accurate inviscid method for this type of flow. Theoretical results from the solution of the full transonic-potential equation, including boundary layer effects, agree well with the experimental pressure distribution for a boattail. Use of the small disturbance transonic potential equation yielded results that did not agree well with the experimental results even when boundary-layer effects were included in the calculations.

Keywords: AERODYNAMICS

Type: NASA-TN-D-7984 , E-8065

Format: application/pdf

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