Development of a Viscous Transonic Cascade Analysis.
Final rept. 29 Apr 77-29 Aug 78,
UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CONN
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A research program has been conducted towards developing an analysis to predict viscous flow in a cascade blade passage. Two approaches have been investigated. The first concerns obtaining solutions to the compressible Navier-Stokes equations of motion, and the second considers the formulation and numerical solution of viscidinviscid interaction models for localized flow regions to predict several of the viscous phenomena of importance in turbomachinery applications. In the present effort an existing computer code, based on an alternating direction, implicit time-marching solution to a general coordinate representation of the Navier-Stokes equations has been modified to be applicable to the blade passage problem. In addition, a simple external flow field, i.e., flow past a circular cylinder, has been calculated in order to gain experience in working with this code and to assess its reliability and efficiency. In the second part of the present effort an interacting boundary layer model, incorporating asymptotic triple deck concepts, has been constructed to predict the flow in the trailing edge region of an airfoil.
- Fluid Mechanics