Year: 1970
Type: article
Abstract: SUMMARY OF RESULTS An experimental investigation was conducted in the NASA Lewis Research Center 2.2-Second Zero-Gravity Facility to determine the cavity stability criteria for gas jet impingement on a liquid surface during weightless conditions. The contact angle on the test container surface was restricted to 90' such that the liquid-gas interface remained flat and stationary prior to impingement during weightlessness. The distance between the liquid surface and the circular nozzle was less than three nozzle diameters. The nozzles tested had inner diameters ranging from 0.127 to 0.318 centimeter. Nitrogen was employed as the test gas and water as the test liquid. This study, which employed laminar parabolic jets, yielded the following results: liquid surface decreases with increasing nozzle diameter. number WeM 1. The velocity at which the cavity becomes unstable during gas impingement on a 2. An inviscid analysis was used to derive analytically a critical modified Weber is the critical modified Weber number, cr
Author: T. L. Labus
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2925484