Accession Number:

AD0733589

Title:

Inclination of Pressure Orifices in Low-Density Flow,

Descriptive Note:

Corporate Author:

DEUTSCHE FORSCHUNGS- UND VERSUCHSANSTALT FUER LUFT- UND RAUMFAHRT E V BRUNSWICK (WEST GERMANY)

Personal Author(s):

Report Date:

1970-12-17

Pagination or Media Count:

2.0

Abstract:

An important problem in rarefied gas dynamics is the interpretation given to the pressure measured in a cavity that is vented to the surface through an orifice. It has been found that the cavity pressure can differ markedly from the gas pressure when the temperatures of the cavity and the gas are different, and when the molecular mean free path is comparable to the orifice diameter. This is the so called Orifice Effect. For the first time the influence of the inclination angle of a pressure tube on the cavity pressure is shown in this Note. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE