Observation of Unsteady Cryogenic Flows from a Characteristic Coaxial Rocket Injector

V. Gautam; M. B. Linck; A. K. Gupta

doi:10.2514/1.28922

Cavitation Modeling for Cryogenic Flows Using a Rule-Based Framework

52nd Aerospace Sciences Meeting ◽

10.2514/6.2014-0442 ◽

2014 ◽

Author(s):

Siddharth S. Thakur ◽

Jeffrey Wright

Keyword(s):

Rule Based ◽

Cryogenic Flows

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Extension of AUSM-type fluxes: from single-phase gas dynamics to multi-phase cryogenic flows at all speeds

Shock Waves ◽

10.1007/s00193-019-00891-6 ◽

2019 ◽

Vol 29 (5) ◽

pp. 735-753

Author(s):

H. Kim ◽

C. Kim

Keyword(s):

Gas Dynamics ◽

Single Phase ◽

All Speeds ◽

Multi Phase ◽

Cryogenic Flows

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Flows of liquid4He due to oscillating grids

Journal of Fluid Mechanics ◽

10.1017/jfm.2017.703 ◽

2017 ◽

Vol 832 ◽

pp. 578-599 ◽

Cited By ~ 10

Author(s):

P. Švančara ◽

M. La Mantia

Keyword(s):

Turbulent Flows ◽

Particle Tracking Velocimetry ◽

Reynolds Numbers ◽

Quantized Vortices ◽

Viscous Fluids ◽

Statistical Distributions ◽

Small Particles ◽

Oscillating Grids ◽

The Mean ◽

Cryogenic Flows

We investigate cryogenic flows of liquid4He between two grids oscillating in phase, at temperatures ranging from approximately 1.3 to 2.5 K, resulting in suitably defined Reynolds numbers up to$10^{5}$. We specifically study the flow-induced motions of small particles suspended in the fluid by using the particle tracking velocimetry technique. We focus on turbulent flows of superfluid4He that occur below approximately 2.2 K and are known to display, in certain conditions, features different from those observed in flows of classical viscous fluids, such as water. We find that, at large enough length scales, larger than the mean distance between quantized vortices, representing the quantum length scale of the flow, the shapes of the velocity and velocity increment statistical distributions are very similar to those obtained in turbulent flows of viscous fluids. The experimental outcome strongly supports the view that, in the range of investigated parameters, particles probing flows of superfluid4He behave as if they were tracking classical flows.

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Monitoring of Cryogenic Flows: Realization of the Radio Frequency Method

Advances in Cryogenic Engineering ◽

10.1007/978-1-4615-3368-9_82 ◽

1992 ◽

pp. 1461-1470

Author(s):

Yu. P. Filippov ◽

A. I. Alexeyev ◽

N. I. Lebedev ◽

I. S. Mamedov ◽

S. V. Romanov

Keyword(s):

Radio Frequency ◽

Frequency Method ◽

Cryogenic Flows

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How to measure void fraction of two-phase cryogenic flows

Cryogenics ◽

10.1016/s0011-2275(01)00080-7 ◽

2001 ◽

Vol 41 (5-6) ◽

pp. 327-334 ◽

Cited By ~ 10

Author(s):

Yu.P. Filippov

Keyword(s):

Void Fraction ◽

Two Phase ◽

Cryogenic Flows

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Technique for flowrate calculation of cryogenic two-phase flows in Venturi flowmeters without separation

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2020-7-34-42 ◽

2020 ◽

pp. 34-42

Author(s):

I.A. Arkharov ◽

I.D. Kakorin

Keyword(s):

Equation Of State ◽

Pressure Drop ◽

Measurement Range ◽

Two Phase Flows ◽

Two Phase ◽

Optimal Measurement ◽

Flow Parameters ◽

Phase Medium ◽

Vapour Quality ◽

Cryogenic Flows

A technique for calculating the flowrate of cryogenic two-phase flows in separationless flowmeters based on a venturi is proposed. The technique takes into account the equation of state of the two-phase medium, that is changes in density, mass vapour quality and temperature of cryogens two-phase flows against pressure in the venturi. It is shown that without an accounting of the flow parameters evolution, an additional flowrate error appears and therefore it is impossible to correctly determine the sensitivity and measurement range of the flowmeter. The most optimal measurement range of the pressure drop is chosen as well as a method of the flowrate measuring by the temperature difference across the venturi is proposed. The problem of determining the flowrate of two-phase cryogenic flows is topical for accelerator, aerospace and gas-transport engineering.

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