Accession Number:

ADA007357

Title:

Argon Nucleation in a Supersonic Nozzle,

Descriptive Note:

Corporate Author:

YALE UNIV NEW HAVEN CONN DEPT OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

• Stein,Gilbert D.

Report Date:

1974-10-01

Pagination or Media Count:

28.0

Abstract:

Experiments on the condensation of gaseous argon by homogeneous nucleation have been carried out in a supersonic nozzle at pressures high enough so that the phase change occurs under collision dominated or continuum flow conditions. In addition, the argon is precooled in a liquid nitrogen heat exchanger so that the onset of nucleation takes place at a low enough Mach number 1.85 in this case such that the experiments can be interpreted through the use of one-dimensional gasdynamics. The supply pressure and temperature are varied so that the onset of condensation occurs at the nozzle exit, as detected through the use of laser light scattering.

Descriptors:

• *GAS DYNAMICS
• *ARGON
• *SUPERSONIC NOZZLES
• EXPERIMENTAL DATA
• NUCLEATION
• SUPERSONIC FLOW
• SUPERCOOLING

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE