scholarly journals Measuring the velocity field of a shear-coaxial, cryogenic flame in a high-pressure rocket thrust chamber

2020 ◽  
Author(s):  
Min Son ◽  
Wolfgang Armbruster ◽  
Justin Hardi ◽  
Michael Oschwald
Keyword(s):  
High Pressure ◽  
Velocity Field ◽  
Thrust Chamber ◽  
Rocket Thrust

Injector-Driven Flame Dynamics in a High-Pressure Multi-Element Oxygen–Hydrogen Rocket Thrust Chamber

2019 ◽  
Vol 35 (3) ◽  
pp. 632-644 ◽  
Author(s):  
Wolfgang Armbruster ◽  
Justin S. Hardi ◽  
Dmitry Suslov ◽  
Michael Oschwald
Keyword(s):  
High Pressure ◽  
Thrust Chamber ◽  
Flame Dynamics ◽  
Rocket Thrust

Wall Heat Loads in a Cryogenic Rocket Thrust Chamber During Thermoacoustic Instabilities

2021 ◽  
pp. 1-11
Author(s):  
Thomas Govaert ◽  
Wolfgang Armbruster ◽  
Justin S. Hardi ◽  
Dmitry Suslov ◽  
Michael Oschwald ◽  
...  
Keyword(s):  
Thermoacoustic Instabilities ◽  
Thrust Chamber ◽  
Rocket Thrust ◽  
Heat Loads

Ignition delay times of methane fuels at thrust chamber conditions in an ultra-high-pressure shock tube

2022 ◽  
Author(s):  
Michael Pierro ◽  
Andrew Laich ◽  
Justin J. Urso ◽  
Cory Kinney ◽  
Subith Vasu ◽  
...  
Keyword(s):  
High Pressure ◽  
Shock Tube ◽  
Ignition Delay ◽  
Pressure Shock ◽  
Thrust Chamber ◽  
Ultra High Pressure ◽  
Ignition Delay Times ◽  
Delay Times

Experimental and Numerical Investigation of the Unsteady Surface Pressure in a Three-Stage Model of an Axial High Pressure Turbine

2004 ◽  
Vol 128 (2) ◽  
pp. 261-272 ◽  
Author(s):  
Carmen E. Kachel ◽  
John D. Denton
Keyword(s):  
High Pressure ◽  
Velocity Field ◽  
Surface Pressure ◽  
Pressure Field ◽  
Pressure Fluctuations ◽  
Pressure Waves ◽  
Stage Model ◽  
Unsteady Pressure ◽  
Unsteady Surface Pressure ◽  
Blade Row

This paper presents the results of a numerical and experimental investigation of the unsteady pressure field in a three-stage model of a high pressure steam turbine. Unsteady surface pressure measurements were taken on a first and second stage stator blade, respectively. The measurements in the blade passage were supplemented by time resolved measurements between the blade rows. The explanation of the origin of the unsteady pressure fluctuations was supported by unsteady three-dimensional computational fluid dynamic calculations of which the most extensive calculation was performed over two stages. The mechanisms affecting the unsteady pressure field were: the potential field frozen to the upstream blade row, the pressure waves originating from changes in the potential pressure field, the convected unsteady velocity field, and the passage vortex of the upstream blade row. One-dimensional pressure waves and the unsteady variation of the pitchwise pressure gradient due to the changing velocity field were the dominant mechanisms influencing the magnitude of the surface pressure fluctuations. The magnitude of these effects had not been previously anticipated to be more important than other recognized effects.

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