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Information × Registration Number 0220U102071, 0117U001209 , R & D reports Title Development of new generation of high effective calculation methods for hydrodynamic and heat and mass transfer processes in tanks of space-missile systems popup.stage_title Head Homan Oleh H, Registration Date 08-03-2020 Organization Oles Honchar Dnipro National University popup.description2 The object of the study was the hydrodynamic and heat transfer processes in the fuel tanks of rocket and space technology (in particular, with cryogenic fuel) with a free limit, mainly in microgravity during orbital flight in the presence of various mechanical influences and taking into account the entire spectrum. The purpose of the study was to create simplified asymptotic mathematical models of the phenomena considered on the basis of their meticulous criterion analysis and to develop on the basis of these simplified models effective methods of their calculation using the theory of potential and the boundary element method. As a result of the research, a number of new mathematical models and new methods of implementation of these models have been created regarding hydrodynamic and heat transfer phenomena for various rocket and space technology objects. Namely: - heat exchange between the tank with cryogenic fuel and the environment, taking into account condensation and freezing of moisture on the outer surface of the tank; in particular, a new way of preventing cryogenic fuel tanks from icing; - bubble boiling of cryogenic liquid on the inner surface of the tank and convection inside the tank; - the movement of fuel in the tanks with a free boundary under the influence of arbitrary mechanical influences for the sake of determining the location of the free surface in the tank space and the influence of the fluid motion on the tank shell; - fuel reorientation in the transitional stages of the rocket engine; - heat transfer in a fuel tank under microgravity during orbital flight, taking into account various thermal effects and flotation phenomena and sedimentation of dispersed phase objects in the form of gas bubbles, etc. Scope of use: design offices for design of rocket and space technology (in particular, State Enterprise “Yuzhnye Design Bureau” named after M.K. Yangel) and universities engaged in training specialists in the field of rocket technology and space. Product Description popup.authors Yevdokymov Dmytro V Brazaluk Iuliia V Davydova Angelica V Knysh Ludmila I Menshikov Yuriy L popup.nrat_date 2020-04-02 Close