TRANSPIRATION COOLING OF A TURBULENT BOUNDARY LAYER IN AN AXISSYMMETRIC NOZZLE,

Abstract

An experimental investigation was made of the downstream influence of mass transfer on an exisymmetric nozzle in turbulent flow. The coolant gases (helium and nitrogen) were injected at various rates through a porous region upstream of the throat of the nozzle. The experimental heat transfer to the nozzle surface is presented as a function of the mass transfer for various stations along the impermeable region of the nozzle. An approximate method for predicting the influence of the mass injection on the heat transfer was developed. This method agrees reasonably well with the experimental data for stations sufficiently downstream of the porous region. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0415448

Entities

People

  • Joseph Librizzi
  • Robert J. Cresci

Organizations

  • New York University Tandon School of Engineering

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Experimental Data
  • Flow
  • Heat Transfer
  • Layers
  • Mass Transfer
  • Nitrogen
  • Turbulent Boundary Layer
  • Turbulent Flow

Fields of Study

  • Engineering
  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.