Experimental and numerical investigation of heat loads in separated nozzle flow

A. Groß, O. Haidn, R. Stark, W. Zeiss, C. Weber, C. Weiland

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

2-D numerical nozzle flow simulations and cold gas sub scale nozzle experiments are conducted to gain a better understanding of the various mechanisms that cause heat loads in nozzles. The 2-D numerical simulations account for non-equilibrium chemistry and show post-combustion with the entrained ambient air but cannot sufficiently explain the wall heat loads observed in the experiments. Obviously, 2-D numerics lack the physics to explain 3-D phenomena. Hence, sub scale cold gas nozzle experiments are chosen to study unsteady and 3-D effects since they are more efficient, more realistic and less costly than unsteady 3-D computations. In addition to the common diagnosis tools an infrared camera is used to visualize wall heat loads. These experimentes yield 3-D streamwise structures reminiscent of Gortler vortices which may have a significant effect on the wall heat loads.

Original languageEnglish
StatePublished - 2001
Externally publishedYes
Event37th Joint Propulsion Conference and Exhibit 2001 - Salt Lake City, UT, United States
Duration: 8 Jul 200111 Jul 2001

Conference

Conference37th Joint Propulsion Conference and Exhibit 2001
Country/TerritoryUnited States
CitySalt Lake City, UT
Period8/07/0111/07/01

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