Simulation and Prediction of Jet Induced Geyser Formation in Microgravity Propellant Tanks

Marchetta, Jeffrey G.; Kain, Christopher E.; Simmons, Benjamin; Benedetti, Robert H.

doi:10.2514/6.2006-937

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…For example, benchmark jet spread rates for the various turbulence models in FLUENT have already been validated for shear flows. Several laminar jet test cases from the Aydelott experiment were simulated in previous efforts (Marchetta et al 2006;Simmons et al 2005) and the predictions were shown to be in excellent agreement with the experiment data. A 16 case subset of the Aydelott experiments, which has been used in previous simulations efforts, form the basis for investigating reduced gravity turbulent jets.…”

Section: Reduced Gravity Jet-induced Geyser Predictionsmentioning

confidence: 52%

“…It has been shown (Marchetta et al 2006) that the jet spread rate is a major influence on geyser height predictions using the RIPPLE simulation. Since the jet-spread rate is unique parameter for a particular turbulence model, the search for an optimum turbulence model is presented herein.…”

Section: Reduced Gravity Jet-induced Geyser Predictionsmentioning

confidence: 98%

“…A more recent computational study (Marchetta et al 2006) of the drop tower cases previously investigated by Thornton et al was performed. The study was enhanced with the implementation of the k-ω turbulence model.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Jet-Induced Geysers in Reduced Gravity

Marchetta

Benedetti

2008

Microgravity Sci. Technol.

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Control of cryogenic propellant tank pressure during tank refueling and expulsion in low gravity is an important technical challenge to overcome for future long duration missions in space. One method proposed to control tank pressurization involves the use of jet-induced geysers. Two-dimensional computational models have been developed and used with limited success in previous efforts to predict geyser heights in microgravity. A three-dimensional flow simulation is used to model jet-induced geysers in reduced gravity. Geyser flows are commonly characterized by the presence of turbulent jets, transient flow, deforming free surfaces, and surface tension effects. As is the case for many turbulent flow applications, accuracy in simulating complex turbulent flows is critically dependent on the selection of a suitable turbulence model. The sensitivity of the simulation geyser predictions to a suite of popular turbulence models is assessed. Simulation results are compared to available experiment results. By expanding upon the work already completed, the model is used to simulate a broad range of cases within the experiment test matrix. Simulation results suggest the two dimensional simulation using the k-ε turbulence model provides the most accurate results for jetinduced geysers in reduced gravity when compared to available experiment data.

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Section: Reduced Gravity Jet-induced Geyser Predictionsmentioning

confidence: 52%

Section: Reduced Gravity Jet-induced Geyser Predictionsmentioning

confidence: 98%