Engineering study of flexible baffles for slosh suppression

Analysis of aluminum and nonmetallic baffles for use with oxygen containers to prevent sloshin

Studies of propellant sloshing under low-gravity conditions Final report, 4 Jan. 1966 - 10 oct. 1970

Studies of propellant sloshing under low gravity condition

A discussion of laboratory methods of simulating low-gravity fluid mechanics

Small diameter tanks and magnetic fluids for laboratory simulation of low-gravity liquid behavio

Study of liquid slosh in the tracking and data relay satellite hydrazine tanks

An experimental study was conducted to provide data for evaluation of the parameters for an analytical mechanical model representation of liquid/interface dynamics in the TDRSS propellant tanks. Models were developed for two liquid-under ullage (forward tank) configurations and for one liquid-over-ullage (aft tank) configuration. However, additional test runs were conducted with liquids of different densities in both cases to allow separation of bladder stiffness and gravity effects under various simulated steady acceleration conditions. Both static and dynamic parameters are evaluated to provide a good prediction of observed results

Simulated low-gravity sloshing in spherical tanks and cylindrical tanks with inverted ellipsoidal bottoms

Simulated low gravity sloshing in spherical and cylindrical tanks with inverted ellipsoidal bottom

Study of liquid jet impingement on screens

A model is presented for an unconfined flow, such as a free jet, impinging on a screen which incorporates the influence of liquid deflection by the screen. The boundary layer blockage coefficient is introduced. This coefficient depends on the screen weave geometry and the jet impingement angle, and essentially accounts for the increase in fluid particle trajectory length through the screen resulting from the flow deflection. Comparisons were made with previous experimental studies to determine empirical values of the blockage coefficient. It is concluded that the new model reliably predicts the bulk flow and penetration characteristics of an impinging liquid jet interacting with a screen

Study of vapor flow into a capillary acquisition device

An analytical model was developed that prescribes the conditions for vapor flow through the window screen of a start basket. Several original submodels were developed as part of this model. The submodels interrelate such phenomena as the effect of internal evaporation of the liquid, the bubble point change of a screen in the presence of wicking, the conditions for drying out of a screen through a combination of evaporation and pressure difference, the vapor inflow rate across a wet screen as a function of pressure difference, and the effect on wicking of a difference between the static pressure of the liquid reservoir and the surrounding vapor. Most of these interrelations were verified by a series of separate effects tests, which were also used to determine certain empirical constants in the models. The equations of the model were solved numerically for typical start basket designs, and a simplified start basket was constructed to verify the predictions, using both volatile and nonvolatile test liquids. The test results verified the trends predicted by the model

Low-gravity sloshing in rectangular tanks

Low-gravity sloshing in rectangular tank

Propellant dynamics in an aircraft-type launch vehicle

Liquid propellant sloshing in tilted axisymmetric cylindrical tanks for space shuttle application

Equivalent mechanical model of propellant sloshing in the workshop configuration of the Saturn S-4B Final report

Mechanical model for propellant sloshing in irregular compartmentation of S-4B Workshop configuration during roll and lateral excitation