COMPUTATIONAL STUDY OF TURBINE BLADE COOLING BY SLOT-INJECTION OF A GAS

This article presents a two-dimensional numerical model for the inject ion of a fluid through a slot into a free stream. The model is based o n a finite-volume integration of the equations governing mass, momentu m and heat transport. The solution accuracy was improved by using loca l grid refinement. The storage of variables was done in a collocated m anner, thus allowing the reduction of storage requirements and a more accurate interfacing of the various sub-domains of the grid. The model developed was validated doubly by comparison with available experimen tal data and the results of an analytical method proposed for two-dime nsional injection of an irrotational inviscid fluid. (C) 1997 Elsevier Science Ltd.