Directed circulating flows in tanks of moving objects

Abstract

The results of liquid fuel inertial flows numerical modeling in the tanks of the spacecraft during its maneuvering in the Earth's orbit are given. It is shown that the circulations that occur when internal guiding devices are used in the form of widely spaced rigid baffles can be deformed and affect the flow space not covered by them. In addition, the circular moments of inertia of the liquid on the baffles can be controlled by means of the appropriate location of the guide devices in terms of width and distance from the tank wall. The force effects calculation of the moving fluid on the walls and internal structures makes it possible to fairly correctly present the hydrodynamic picture of the of inertial flows development, as well as predict the methods and means of compensation for such disturbances. According to the obtained results of the specified processes simulation in the tanks, it can be stated that the inertial flows of the liquid in the tanks are strongly nonlinear, the properties of which depend on the geometry, the initial conditions for the generation of peak force effects tank on the tank walls and bottoms. The use of internal guiding devices in the flow significantly changes the geometry of wave formations, corrects the coordinates and duration of resonant currents in the tank. The main task is to minimize the mass and dimensions of the baffles with a simultaneous increase in the damping efficiency of resonant flows. In addition, the determination of the power parameters real distribution contributes to the development of the latest, more effective designs of baffles, which will allow more reliable influence on uncontrolled inertial flows in tanks.