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Title: Boundary layer flow in a streamwise corner
Author: Zamir, Mair
Awarding Body: Queen Mary, University of London
Current Institution: Queen Mary, University of London
Date of Award: 1968
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In a preliminary study a distinction is drawn between "Curvilinear" boundary layers, in which the lines of maximum velocity gradient are curved and do not coincide with the straight normals to the surface, and "Rectilinear" boundary layers, in which the lines of maximum velocity gradient coincide with the straight normals to the surface. The major part of the work is then concentrated on a basic example of the former, namely that of the laminar incompressible boundary layer along the line of intersection of two perpendicular semi-infinite flat plates. Experimental results, which have not hitherto been available, provide detailed information on the primary and secondary flow fields, the pressure field, skin friction, transition, streamwise and lateral growth, as well as some information on the turbulent part of the layer downstream of transition. In a discussion of the theoretical problem it is shown that in dealing with curvilinear boundary layers, (i) conventional boundary layer techniques are inadequate and (ii) the choice of a coordinate system is an additional unknown. An appeal is therefore made to tensor analysis for constructing a theory independently of the coordinate system and then, using a tentative hyperbolic system, equations are obtained for the corner boundary layer. These equations, though rather complex, are found to reduce to a fairly simple form in the plane of symmetry, and the scheme as a whole appears as if it could provide the basis for a curvilinear boundary layer theory.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available