Computation of Discrete Hole Film Cooling Flow Using the Navier-Stokes Equations.
Abstract
An analysis and computational procedure are described here for predicting flow and heat transfer which results from coolant injection through a single row of round holes oriented at an angle to a flat surface with the injection and free stream velocity vectors coplanar. The present method solves the compressible Navier-Stokes equations and utilizes 'zone embedding', surface-oriented coordinates, interactive boundary conditions, and an efficient split LBI scheme. The approach treats the near-hole flow region where the film cooling flow is initially established. A sample laminar flow calculation is presented for an injection angle of 45 degrees and a ratio of normal injection to free stream velocity of 0.1. Selected results are compared with previous calculations for the normal injection case. Although the present results do not include heat transfer predictions, details of the interaction between injectant and main stream flow near the hole exit are in qualitative agreement with experimental observations for other flow conditions. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1981
- Accession Number
- ADA102851
Entities
People
- H. Mcdonald
- H.j. Gibeling
- J. P. Kreskovsky
- W. R. Briley