Boundary-layer investigations on a model of the ELAC 1 configuration at high Reynolds numbers in the DNW
Boundary-layer investigations on a model of the ELAC 1 configuration at high Reynolds numbers in the DNW
- New search for: Krause, O.
- New search for: Abstiens, R.
- New search for: Fuhling, S.
- New search for: Vitlutsky, V.N.
- New search for: Krause, O.
- New search for: Abstiens, R.
- New search for: Fuhling, S.
- New search for: Vitlutsky, V.N.
Results of boundary-layer investigations on the leeward side of a 1:12 scale model of the ELAC 1 configuration of a space transportation system are presented. The configuration has the shape of a thick delta wing with a rounded leading edge. The model length is 6 m; the experiments were carried out in the 8x6 m2 low-speed German-Dutch wind tunnel at Reynolds numbers up to Re=40.106. In a first series of experiments mean velocity profiles were determined in the turbulent boundary layer on the leeward side of the model, with a single hot-wire probe in the plane of symmetry at four positions. Comparison calculations with a numerical solution of the boundary-layer equations showed good agreement up to angles of attack alpha =10 degrees . In a second series of tests the laminar-turbulent transition of the flow and its separation near the rounded leading edge were investigated at three positions with multi-sensor hot-film arrays with 40, 56, and 96 elements. These measurements demonstrated that the flow near the rounded leading edge is markedly influenced by the nose radius.
Document information
Boundary-layer investigations on a model of the ELAC 1 configuration at high Reynolds numbers in the DNW
European Journal of Mechanics B - Fluids ; 19 , 5 ; 745-764
2000
20 Seiten, 15 Quellen
Article (Journal)
English
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