A Flame Zone Model for Chemical Reaction in a Laminar Boundary Layer with Application to the Injection of Hydrogen-Oxygen Mixtures,

Abstract

An analysis for the prediction of the boundary layer chaacteristics i derived for the case of a chemically reacting gas injected through a porous surface. It i asumed that the flow is steady and laminar with zero pressure gradient. The analysis is based on a model for combustion which utilies the concept of an ignition temperature to distinguish between regions of frozen and equilibrium flow; the model is referred to as the flme zone model. Results of several numerical exaples are presented to demonsrate the use of this model. These include the heat transfer rates to the porou surface as well as temperature and concentration distibutions through the boundary layer. Calculations are carried out for conditions corresponding to hypersonic flight and to typical hypersonic wind tunnel flows and to injected gases consisting of either hydrogen or hydrogen-oxygen mixtures. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1961
Accession Number
AD0267825

Entities

People

  • Constantino Economos
  • Paul A. Libby

Organizations

  • New York University Tandon School of Engineering

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Chemical Reaction Properties
  • Chemical Reactions
  • Combustion
  • Heat Transfer
  • Hydrogen
  • Hypersonic Flight
  • Hypersonic Wind Tunnels
  • Ignition
  • Laminar Boundary Layer
  • Layers
  • Pressure Gradients
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Fluid Dynamics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Boundary Layers
  • Hypersonics - Hypersonic Flight