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Title: Effect of boundary layer control on heat transfer from a rotating disc
Author: Lee, Mark Humphrey
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1966
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The effect on the flow and heat transfer associated with a rotating disc of boundary layer control by: 1. suction and blowing through the surface of the disc; 2. forced axial flow against the disc is studied theoretically. Exact numerical solutions for the flow and heat transfer are extended to cover the general case of combined forced axial flow and blowing through the surface, and the influence of radial surface temperature distribution on the heat transfer produced by these two effects separately is determined. A more exact power series solution for the flow about a rotating disc is extended to include blowing and suction. A finite difference solution for the temperature field is described which can be used for arbitrary wall temperature distributions with sucked. or blown flows. These results agree closely with the exact solutions and compare favourably with other approximate solutions. Results of measurements of the change in heat transfer from a rotating disc produced by blowing and suction through the porous surface of a disc are presented. Direct measurement of the heat transfer, rather than indirectly by analogy, is made with suction both continuous and through, first, four and then eight equally spaced radial slots.' Improvements, or otherwise, in the heat transfer similar to those predicted by the theory were obtained with both the continuous and discrete suction, and the importance of the effect of radial surface temperature variation on the heat transfer recorded by the theory is confirmed. The appendices include a preliminary investigation of the effect of forced radial flow on the heat transfer.
Supervisor: Saunders, Owen Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available