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Cryospace definition software#
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Grimshaw, Free Surface Flow under Gravity and Surface Tension Due to an Applied Pressure Distribution: I Bond Number Greater Than One-Third, Journal of Computational Fluid Dynamic, 19(4) (2005) 237–252.ī. Walter, Velocity of Air Core Vortices at Hydraulic Intakes, Journal of Hydraulic Engineering, 120(3) (1994) 284–297. Additionally, the carried out simulations for an existing two-stage launch vehicle indicate a 13% increase in orbital altitude, which in turn proves the considerable improvement in launch vehicle mass/energetic capabilities. Experimental results show that a 30% decrease can be achieved in critical height by using a particular type of vortex breaker. Eventually, some experiments are conducted to examine the effectiveness of the applied vortex breakers in reduction of the critical height of propellant. The analytical criteria are verified by two-dimensional, axis symmetrical, transient and two-phase numerical model. Analytical results in the absence of a vortex breaker show that the effects of the Weber and Reynolds numbers in the flow field can be ignored for values greater than 720 and 1.1 × 10 5, respectively and critical height can be considered as a function of Froude number under aforementioned conditions.
The focus of the present study is to investigate the effectiveness of installing vortex breakers at the outlet of launch vehicle tanks on postponing vortex formation and decreasing the critical height of propellants while discharging.
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