Numerical study of three-dimensional laminar-turbulent boundary-layer flows on an inclined ellipsoid (Q1316774)

Two cases of three-dimensional \((3D)\) laminar-turbulent boundary-layer flow on a \(6 : 1\) prolate ellipsoid of revolution inclined at angles of 10 and \(5^ \circ\) are studied numerically by the finite difference method. In the first case, ``imposed'' laminar-turbulent transition takes place in a narrow region situated at \(20 \%\) of the body length from the nose. The second case corresponds to natural transition over an extended region. The principle of superposition of viscous and turbulent stresses and the ``mixing length'' model generalized to include the case of \(3D\) flows are used to construct the closing equation governing the flow in the transitional and turbulent regions.