Visual Characteristics and Initial Growth Rates of Round Cryogenic Jets at Subcritical and Supercritical Pressures
Abstract
The visual characteristics and initial growth rates of round cryogenic jets injected into subcritical and supercritical pressures were studied. We found that the jet exhibits liquid-like and gas-like characteristics at subcritical and supercritical pressures, respectively. Explanations are offered. The jet spreading angle at supercritical pressures has been demonstrated to agree quantitatively with the theoretical spreading angle of incompressible but variable density turbulent gas jets, the first time more than a qualitative visual similarity with gas jets has ever been demonstrated. In addition, the present measurements of spreading rates have been plotted along with other measurements for subsonic incompressible constant density and variable density jets, liquid sprays, supersonic jets, and other mixing layers in a plot spanning four orders of magnitude in gas-to-liquid density ratio. This is the first time these results have been consolidated in a single plot over such a large range of density ratio.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2001
- Accession Number
- ADA409837
Entities
People
- B. Chehroudi
- D. Talley
- E. Coy