Vortex Augmented Cooling of Delaval Nozzles.

Abstract

Research has been performed on a means of augment backside cooling of hyperthermal nozzles. The principle employs parallel, counterrotating vortices in the coolant channel to provide ordered mixing of the free stream and the hot wall boundary layer. Experiments using an airflow of Reynolds numbers that duplicate those of the cooling water flow channel (around 100,000 based on channel height) indicate that heat transfer effectiveness may be increased on the order of 20%. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1968
Accession Number
AD0847721

Entities

People

  • John W. Allsbrook Jr

Organizations

  • Flight Dynamics Laboratory

Tags

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Free Stream
  • Heat Transfer
  • Laval Nozzles
  • Layers
  • Nozzles
  • Reynolds Number
  • Water Flow

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Fluid Mechanics and Fluid Dynamics.
  • Thermal Physics or Thermal Science.