Download or read book On Cylindrical Container Sections for a Capillary Free surface Experiment written by Allen Chen and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Cylindrical Container Sections for a Capillary Free surface Experiment written by and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small changes in container shape or in contact angle can give rise to large shifts of liquid in a microgravity environment. These shifts can be used as a basis for accurate determination of contact angle. The authors describe container shapes, designed for a forthcoming USML-2 experiment, in the form of a circular cylinder with two diametrically opposed ''canonical proboscis'' protrusions. Computational studies indicate that these containers can be designed to have the desirable properties that sufficient liquid will participate in the shift to permit easy observation, but that the change will be abrupt enough to allow precise contact angle determination.
Download or read book Capillary Surfaces written by Dieter W. Langbein and published by Springer Science & Business Media. This book was released on 2002-01-29 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Featuring a foreword by the astronaut Ulf Merbold, this book is devoted to interfaces between two fluids, that is, between a liquid and a gas or between two liquids. It is the first review on the subject, providing an up-to-date overview.
Download or read book Mathematical and Computational Studies of Equilibrium Capillary Free Surfaces written by and published by . This book was released on 1977 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Cylindircal Container Sections for a Capillary Free surface Experiment written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dynamics of the Free Liquid Surface in Cylindrical Containers Under Strong Capillary and Weak Gravity Conditions written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1964 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Theoretical Investigations of the Physical Processes Related to the Retention Capability of a Double Screen Element against Liquid Hydrogen in Earth s Gravity and in Microgravity with Respect to the Applied Stimuli written by André Pingel and published by Cuvillier Verlag. This book was released on 2022-08-04 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal screens are commonly used as components for fluid handling in spacecraft and rocket tank designs. In most cases, the screens perform a passive separation of the propellant phases. The separation of the liquid from the gaseous propellant phase, is a special challenge. Liquid-gas phase separation means that the gaseous phase is allowed to enter a phase separation device while the liquid phase is blocked. The technical application of this process is the depressurization in a propellant tank. A certain amount of the gaseous propellant phase is vented from the tank through the gas port. The liquid propellant phase remains in the tank in order to be stored for the engine. However, if the tank causes a liquid movement during the depressurization, a part of the liquid can potentially enter the gas port. In order to prevent the unwanted liquid outflow, a separation of the liquid from the gas is necessary. This is possible with the aid of a double screen element and has already been performed for storable liquids in Earth’s gravity and microgravity as well as for cryogenic liquids in Earth’s gravity. At the current state of the art, the separation of the liquid from the gaseous phase of the cryogenic propellant hydrogen using a double screen element has not been performed in microgravity. However, with regard to a possible application, it is mandatory to investigate the function of the double screen element for the real propellant under relevant environmental conditions. In this work, a cryogenic test facility has been developed and operated successfully under Earth’s gravity and microgravity conditions using the drop tower at the University of Bremen. Hereby, the original, cryogenic propellant phases: liquid and gaseous hydrogen, have been used. The experiments show the appearance of the physical processes which are related to the retention capability of a double screen element against liquid hydrogen. Furthermore, these physical processes can obviously be influenced by an unknown boundary condition at the screens: the screen saturation. This unknown boundary condition in turn can obviously be influenced by a certain stimulus which causes a special, fluid mechanical process. A simplified mathematical and two numerical models have been developed which combine the observed, physical processes in the experiments. Two fitting parameters are introduced which influence the flow through screen pressure loss of the liquid and the gaseous hydrogen phase. After the fitting to experimental data, the two fitting parameters have been interpreted with respect to a possible screen saturation. The results lead to a prediction of the unknown boundary condition and indicate that a partial saturation of the screens with liquid could be present in each considered experiment. This can possibly lead to a major influence of the overall resistance of the double screen element against liquid hydrogen.
Download or read book Mathematical and Computational Studies of the Stability of Axisymmetric Annular Capillary Free Surfaces written by Norman Albright and published by . This book was released on 1977 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1997 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Surface Flows under Compensated Gravity Conditions written by Michael Dreyer and published by Springer. This book was released on 2007-04-17 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book considers the behavior of fluids in a low-gravity environment (e.g. spacecraft) with special emphasis on application in PMD (propellant management device) systems. Since PMD designs are not testable on ground and thus completely rely on analytical or numerical concepts, this book treats three different flow problems with analytical, numerical and experimental means. These problems are linked together by the same set of equations and boundary conditions.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1972 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermal Hydraulics for Space Power Propulsion and Thermal Management System Design written by William J. Krotiuk and published by AIAA. This book was released on 1990 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Lubricant Additives written by Leslie R. Rudnick and published by CRC Press. This book was released on 2009-04-20 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cost, environmental, and performance issues coupled with legislative changes, new engine oil requirements, and technology development for exploration of space and the oceans are changing the lubrication additive market. Reflecting how the need for new applications drives the development of new lubricant additives, Lubricant Additives: Chemistry and Applications, Second Edition presents methods to: Improve the performance, efficiency, and stability of lubricants Protect metal surfaces from wear Select lubricant additives for the food processing industry Select the most appropriate ashless additives Avoid microbial degradation of lubricants Lower toxicity And describes: Standard lubricant testing methods and product specifications Mechanisms and benefits of specific types of lubricant additives Recent industry trends Up-to-Date Coverage of Lubricant Additive Chemistry and Technology Addressing new trends in various industrial sectors and improvements in technology, this second edition provides detailed reviews of additives used in lubricant formulations, their chemistry, mechanisms of action, and trends for major areas of application. It explores the design of cost-effective, environmentally friendly lubricant technologies and lubricants for automotive, industrial, manufacturing, aerospace, and food-processing applications. An extensive list of online industry resources is available for download at crcpress.com.
Download or read book Technical Paper Florida Engineering and Industrial Experiment Station written by University of Florida. Engineering and Industrial Experiment Station and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Liquid Sloshing Dynamics written by Raouf A. Ibrahim and published by . This book was released on 2005-09 with total page 972 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with almost every aspect of liquid sloshing dynamics.
Download or read book Japanese Science and Technology 1983 1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:
