Design of a Film-Cooled Entraining Diffuser.

Abstract

A film-cooled entraining diffuser is described which consists of a series of staged cylindrical rings, each overlapping the adjacent one so as to create annular slots for the entrainment of surrounding ambient air. A two-step iterative design procedure is outlined. In step one an analysis similar to that first employed by von Karman is used to calculate the rate at which air is drawn into each slot. In step two these flow rates are used in a downstream-marching, iterative, implicit finite-difference method to calculate the development of wall jet boundary layers downstream of the slots. Details about the design and manufacturing of a three-ring model structure are presented and proposed future experimental validation is discussed. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1980
Accession Number
ADA083951

Entities

People

  • S. B. Murray

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Abstracts
  • Boundaries
  • Boundary Layer
  • Classification
  • Computational Fluid Dynamics
  • Exhaust Gases
  • Fluid Dynamics
  • Fluid Mechanics
  • Heat Transfer
  • Mass Transfer
  • Pressure Gradients
  • Reynolds Number
  • Static Pressure
  • Turbines
  • Turbulent Boundary Layer
  • Turbulent Flow
  • Turbulent Mixing

Readers

  • Combustion and Flow Dynamics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.