Theory of Ice Nucleation in Sonic and Supersonic Nozzles.

Abstract

The flow of air at the throat of a nozzle will have a Mach number of 1.0, when the stagnation pressure upstream of the throat is 1.9 times environment pressure of the exhaust region. If the stagnation pressure is greater than this critical value, a properly designed nozzle will support supersonic velocities in a region downstream of the throat. This paper is a preliminary draft of an attempt to organize the theoretical considerations involved in the development of ice embryos within supersonic nozzles, so that it will be possible to engineer effective ice nucleating nozzles for clearing supercooled fog.

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1967
Accession Number
AD0778614

Entities

People

  • C. J. Todd
  • E. E. Hindman Ii

Tags

DTIC Thesaurus Topics

  • Engineers
  • Environment
  • Mach Number
  • Motion
  • Nozzles
  • Nucleation
  • Physical Properties
  • Stagnation Pressure
  • Supersonic Nozzles

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Fluid Dynamics.
  • Polar and Arctic Studies

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow