Microgravity Fluid Mechanics: Iutam Symposium Bremen 1991

ISBN-13: 9783642500930 / Angielski / Miękka / 2012 / 611 str.

Hans J. Rath; Hans J. Rath

Opis

Substantial progress has been made in the field of fluid mechanics under compensated gravity effects (microgravity). The main task of this disciplinehas evolved tremendously. Starting out with the aim of providing assistance in describing flow problems in other microgravity sciences, microgravityfluid mechanics has itself now become acknowledge as a powerful means of research. The IUTAM Symposium on Microgravity Fluid Mechanics has pro- vided the long-awaited forum for scientists from 15 coun- tries to discuss and concretize the "state-of-the-art" in this discipline. The main themes treated are: Interface Phe- nomena, Convective Processes; Marangoni effects, Solidifica- tion, Combustion, Physico-Chemical Processes, Multiphase Phenomena, Residual Acceleration effects, Fluid Handling and Non-Newtonian Flows.

Spis treści

1st Session Interface Phenomena of Pure Fluids under Isothermal Conditions.- Static and dynamic response of liquid bridges.- On accurate determination of contact angle.- Liquid bridge ocsillations: analytical and numerical results.- Viscosity effects on the dynamics of long axisymmetric liquid bridges.- Vibrational behavior of amphora liquid columns in microgravity fields.- 1st Poster Session Interface Phenomena I.- Marangoni-convection in a non-spherical liquid drop.- Some problems raised by Marangoni instability in spherical geometry.- Marangoni convection in drops under microgravity conditions.- Stationary Marangoni instability in a liquid layer due to non-isothermal gas absorption.- Three-dimensional transient simulation of Marangoni flow in a cylindrical enclosure under various gravity levels.- Influence of the temperature gradient on the oscillatory instabilities of thermocapillary flow at a rotating interface.- Simultaneous measurement of the temperature and velocity field in thermocapillary convections of bubbles.- Influence of the electromagnetic, g-jitter or thermocapillary forces on the stability of the stationary buoyancy convection.- The influence of high frequency tangential vibrations on the stability of the fluid interfaces in microgravity.- Thermocapillary flows and deformations of the surface in the systems of fluid layers with the longitudinal temperature gradient in microgravity.- 2nd Session Residual Acceleration Effects, Fluid Handling.- Fluid management under micro-gravity conditions in technical applications.- The sensitivity of a non-isothermal liquid bridge to residual acceleration.- Effect of g-jitter on liquid free surfaces in microgravity.- Theoretical investigation of the rotating disks flow of one and two-phase fluids in microgravity.- Transient convection caused by acceleration disturbances.- 3rd Session Convection Induced by Interface-Tension-Gradients: Marangoni-Effects.- Experimental studies of thermal Marangoni-effects.- Upper layer flow phenomena in two immiscible liquid layers subject to a horizontal temperature gradient.- Surface waves in a free liquid-gas interface by oscillatory Marangoni convection.- Thermocapillary convection in a magnetic field.- Experimental investigation of the management of large-sized drops and the onset of Marangoni-convection.- 2nd Poster Session Interface Phenomena II, Convective Processes, Solidification.- Bubble migration under the combined action of buoyancy and thermocapillarity.- Effects of the natural convection on fuel droplet evaporation.- Thermal convection in microgravity during a slow rotation.- Stability of a spherical and a catenoidal liquid bridge between two parallel plates in the absence of gravitiy.- Equilibrium shapes, stability and dynamical behaviour of liquid captive menisci under gravitational, centrifugal and electrical fields.- Linear stability of Marangoni-Hartmann-convection.- Numerical analysis of the sensitivity of crystal growth experiments to spacecraft residual acceleration.- Thermocapillary bubble migration — an Oseen-like analysis of the energy equation.- Applications of bifurcation theory to the problem of rotating liquid drops in space.- Surface tension effects on the onset of double-diffusive convection.- 4th Session Combustion, Physico-Chemical Processes, Multiphase Phenomena.- Computational/experimental basis for conducting alkane droplet combustion experiments on space-based-platforms.- Ignition delay of premixed gases under microgravity conditions.- Velocity measurement by PIV in flames.- Stability of the vapour phase in a rotating two-phase fluid system subjected to different gravitational intensities.- Mathematical modelling of microsphere formation under short-time weightlessness.- 5th Session Convection Induced by Interface-Tension-Gradients: Bubbles and Drops.- Thermocapillary motion of bubbles and drops.- Thermocapillary migration of bubbles at moderately large Reynolds numbers.- Drop and bubble migration at moderate Reynolds and Marangoni numbers.- Capillary effects associated with the motion of a droplet in a homogeneous medium.- Steady and oscillating convection phenomena caused by an air bubble beneath a heated wall.- 3rd Poster Session Applications.- Distortions of parallel flow in continuous flow electrophoresis.- Propellent management for satellite propulsion system under microgravity.- Fire modelling under microgravity conditions.- Thermal scaling of two-phase heat transport systems for space: predictions versus results of experiments.- Experimental study of capillary effects for fluid management under microgravity conditions.- Microgravity liquid-gas interface configuration and surface-tension device design.- Modelling of binary systems with a miscibility gap behaviour under weightlessness and quasi-weightlessness.- Measurement of the thermal conductivity of fluids with low viscosity under microgravity.- Free motion of an unsupported tank that is partially filled with liquid.- Calibration of thermal anemometer at very low Reynolds numbers under microgravity.- 6th Session Non-Newtonian Fluid Flows, Solidification, Applications.- Particle migration at melting and solidification fronts.- Thermal convection of non-newtonian fluids under low gravity conditions.- Solidification of a liquid sphere in weightlessness.- Investigation of density driven large-scale ocean motion under microgravity.- Panel Discussion (Synthesis).- Contributors.