Velocity and Heat Transfer Analysis in Channels with a Porous Wall.
Technical rept. Apr-Jun 71,
AIR FORCE AERO PROPULSION LAB WRIGHT-PATTERSON AFB OHIO
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A method of cooling turbine blades internally by continuous injection through an interior baffle is analyzed. The analytical model consists of a two-dimensional channel formed by a solid wall blade surface and a porous plate injection source. Based on incompressible and laminar flow assumptions the velocity and the temperature fields are determined. The Nusselt number for a power-law surface temperature variation is obtained and expressed in terms of the Prandtl and Reynolds numbers. The related problem of cooling the turbine disc is also solved. Author
- Jet and Gas Turbine Engines