Characterization of cryogenic injection at supercritical pressure

Mayer, W.; Telaar, J.; Branam, Richard; Schneider, Günter; Hussong, Jeanette

doi:10.2514/6.2001-3275

Cited by 13 publications

(14 citation statements)

References 14 publications

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“…Chamber and injectant conditions have been marked separately. Previous studies (Mayer et al 2001;Chehroudi et al 2003) have shown that supercritical behaviour may be encountered even when only one of the parameters, P r or T r , is critical. It was observed in this study that both parameters need to exceed the critical values for complete supercritical behaviour to exist.…”

Section: Experimental Conditionsmentioning

confidence: 96%

Disintegrating supercritical jets in a subcritical environment

2013

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Supercritical fluid injection using a single round injector into a quiescent atmosphere at subcritical and supercritical conditions was studied experimentally with particular attention paid to supercritical-into-subcritical injection and the reassertion of surface tension. The entire system was binary since the surrounding atmosphere consisted of an inert gas of a different composition than that of the injected fluid. Average densities and density gradients were quantified and a method was applied to quantify the resulting drop formation due to the disintegration of the jet based on the experimental conditions. The evolution of drop size with distance from the injector was identified.

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Section: Experimental Conditionsmentioning

confidence: 96%

Disintegrating supercritical jets in a subcritical environment

2013

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“…Since the core length does not have a unique definition among researchers [24], different measuring techniques [25,26] can change its absolute magnitude. Thus, more emphasis should be made on the trends that they have with different operating conditions.…”

Section: B Core Length Measurement Algorithmmentioning

confidence: 99%

Experimental Study of Fluid Jet Mixing at Supercritical Conditions

Roy

Segal

2010

Journal of Propulsion and Power

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Subcritical and supercritical fluids were injected in an inert gaseous atmosphere. Density distribution was measured and density-gradient profiles were inferred from the experimental data. A novel method was applied for the detection of detailed structures throughout the entire jet center plane. The core lengths were measured for each of the cases and correlated with previous visualization results. An eigenvalue approach was taken to determine the location of maximum gradients. The results show a significant influence of chamber-to-injectant density ratio on the core length in the supercritical domain, unlike the subcritical conditions. Nomenclature D = injector diameter, 2 mm P = pressure, atm P cr = critical pressure, atm P r = reduced pressure T = temperature, K T cr = critical temperature, K T r = reduced temperature = density, kg=m 3

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“…Using the CFD-ACE software package, simulation of this multi-physical problem appeared as a straightforward computational approach. Details of the simulation technique are given by Mayer and et al (2001). Real gas nitrogen properties have been used and the computational model can capture the weakly compressible effects.…”

Section: Numerical Simulation Of Injection Under Supercritical Pressumentioning

confidence: 99%