Accession Number:

ADP012357

Title:

Test Case RCM-1 Cryogenic Injection

Descriptive Note:

Corporate Author:

DEUTSCHES ZENTRUM FUR LUFT-UND RAUMFAHRT E V LAMPOLDSHAUSEN (DLR) HARDTHAUSEN(GERMANY)

Personal Author(s):

Report Date:

2001-03-01

Pagination or Media Count:

6.0

Abstract:

The DLR Cryogenic Injector Facility M51 is used to study the jet break-up and mixing of cryogenic jets under high pressure conditions. The research is focused on the injection and mixing processes in cryogenic rocket engines with LOX liquid oxygen and GH2 liquid hydrogen as propellants. To study the fundamental processes of high pressure injection the propellants are replaced by non reacting simulation fluids. In the proposed test case LN2 cold liquid nitrogen is injected into a warm gaseous nitrogen environment. The LN2 jet is formed by a simple tube injector with an inner diameter of 2.2 mm. The principal aim of the cold flow injection experiment is to understand the mixing process of a dense cryogenic jet in a light gas environment. The participant is free in the choice of the physical modeling. The idea is to have different approaches to finally find the most realistic simulation. Shadow graph photography has been used for a preliminary flow field evaluation. Density profiles of the jet have been measured using two dimensional Raman scattering diagnostics.

Subject Categories:

  • Fluid Mechanics
  • Thermodynamics
  • Liquid Propellant Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE