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3 edition of Reduced gravity gas and liquid flows found in the catalog.

Reduced gravity gas and liquid flows

John McQuillen

Reduced gravity gas and liquid flows

simple data for complex problems

by John McQuillen

  • 84 Want to read
  • 10 Currently reading

Published by National Aeronautics and Space Administration, Glenn Research Center, Available from NASA Center for Aerospace Information in [Cleveland, Ohio], Hanover, MD .
Written in English


Edition Notes

StatementJohn McQuillen and Brian Motil.
Series[NASA technical memorandum] -- NASA/TM-2001-210681., NASA technical memorandum -- 210681.
ContributionsMotil, Brian., NASA Glenn Research Center.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL17607351M
OCLC/WorldCa50752560

– Gravity System” in this Handbook series, for a “simple” system example) - different pipe sizes and pipe materials will have different flows for a given elevation drop (i.e., they have different friction losses) (‘friction losses’ are only ‘lost’ to the water system as energy is converted into heat). Convection is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids, including molten rock ().Convection includes sub-mechanisms of advection (directional bulk-flow transfer of heat), and diffusion (non-directional transfer of energy or mass particles along a concentration gradient). Kolla, Srinivas Swaroop, Mohan, Ram S., and Shoham, Ovadia. "Computational Fluid Dynamics Study on the Effect of Inlet Modifications of Gas-Liquid Cylindrical Cyclone (GLCC ©) Compact Separators." Proceedings of the ASME Fluids Engineering Division Summer by: 1.   A countercurrent gas–liquid flow through a fixed bed of spherical particles is examined numerically by solving the particle-scale equations governing the gas and liquid flows. The liquid is assumed to flow along the surface of the particles forming a thin film. The case of small gas flow rates is examined in detail first. In this limit the presence of the liquid film Cited by: 3.

  Transients in Surface Tension Driven Flows in Microgravity chosen for the current problem Alhendal showed VOF method a robust numerical technique for the simulation of gas-liquid two phase flows and for simulation of surface tension flows Air chosen as gaseous phase Water and Hydrazine chosen as liquid phases. Effect of change in.


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Reduced gravity gas and liquid flows by John McQuillen Download PDF EPUB FB2

Reduced gravity gas and liquid flows: simple data for complex problems (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource: All Authors / Contributors: John McQuillen; Brian J Motil; NASA Glenn Research Reduced gravity gas and liquid flows book.

Get this from a library. Reduced gravity gas and liquid flows: simple data for complex problems. [John McQuillen; Brian J Motil; NASA Glenn Research Center,].

Presenting tools for understanding the behaviour of gas-liquid flows based on the ways large scale behaviour relates to small scale interactions, this text is ideal for engineers seeking to enhance the safety and efficiency of natural gas pipelines, water-cooled nuclear reactors, absorbers, distillation columns and gas lift by: regime exists over a wider range of gas and liquid flow rates under reduced gravity conditions compared to normal gravity cocurrent down-flow.

This is illustrated by comparing the flow regime transitions found in reduced gravity with the transitions predicted by Talmor. 1Next, the effect of gravity on the total pressureFile Size: KB. Boussinesq flows are common in nature (such as atmospheric fronts, oceanic circulation, katabatic winds), industry (dense gas dispersion, fume cupboard ventilation), and the built environment (natural ventilation, central heating).

The approximation is extremely accurate for many such flows, and makes the mathematics and physics simpler. Amir Faghri, Yuwen Zhang, in Transport Phenomena in Multiphase Systems, Two-Phase Flow. Two-phase flow refers to the interactive flow of two distinct Reduced gravity gas and liquid flows book with common interfaces in a channel, with each phase representing a mass or volume of matter.

The two phases can exist as combinations of solid, gas and/or liquid phases. Although multiphase flow. Influence of gravity on gas–liquid two-phase flow in horizontal pipes Article in International Journal of Multiphase Flow May with Reads How we measure 'reads'. Of the four type of Two-Phase Flow (Gas-Liquid, Gas-Solid, Liquid-Liquid and Liquid-Solid), gas-liquid flows are the most complex, since they combine the characteristics of a deformable interface and the compressibility of one of the given flows of the two phases in a given channel, the gas-liquid interfacial distribution can take any of an infinite number of possible forms.

due to gravity forces and fall to the gas – liquid interface. This occurs due to the large velocity gradient in the axial direction of the fluid and the difference in densities.

The Reduced gravity gas and liquid flows book move to the liquid collection section whereas the gas flows to the File Size: KB. Gas specific gravity: Reduced gravity gas and liquid flows book and ), in Mechanical Engineer's Reference Book (Twelfth Edition), Gas flow measurement.

As the gas and liquid flow rates are increased further, the stratified liquid level grows and becomes progressively more wavy until Reduced gravity gas and liquid flows book the whole cross-section of the pipe is blocked by a.

The experiments at reduced gravity are conducted on board the Russian IL reduced gravity airplane. Four flow patterns, namely bubble, slug, slug-annular transition and annular flows, are observed depending on the liquid and gas superficial velocities at both by: Mass Transfer in Liquid Film Flows.

be neglected in comparison to the gravity and viscous force. If the liquid film Reduced gravity gas and liquid flows book introduced at the top of the vertical plate the “liquid-gas (vapor. The effects of low gravity on boiling heat transfer are presented.

A short overview of boiling Reduced gravity gas and liquid flows book provided to introduce non-specialists to the field of boiling heat transfer to make them aware of the fundamental physical mechanisms. The facilities used to obtain variable gravity environments are then described, and recent results are reviewed.

Topics covered include bubble dynamics. Liquid is one of the four primary states of matter, with the others being solid, gas and plasma.A liquid is a a solid, the molecules in a liquid have a much greater freedom to move. The forces that bind the molecules together in a solid are only temporary in a liquid, allowing a liquid to flow while a solid remains rigid.

“Physics of gas-liquid flows” is a must read for graduate students, researchers and engineers seeking a solid basis or wanting to update their knowledge in the dynamics of gas-liquid systems.

The book is an authoritative reference, mainly built around the results of the author, a leading expert in the field during several decades. This behavior greatly simplifies the analysis of liquid flows relative to gas flows, wherein the large pressure drop in a channel leads to large expansion and large heat capacity.

The large heat capacity of liquids relative to gases implies that the effects of internal heating due to viscous dissipation are much less significant in liquid Size: 1MB.

The flow measurements were performed at four axial locations (axial distance from the inlet normalized by the pipe diameter, z/D =20, 40 and 60) at various flow conditions of superficial gas velocity (– m/s) and superficial liquid velocity (– m/s).

The effect of gravity on the radial distribution of bubbles and Author: Junichi Uematsu, Kazuya Abe, Tatsuya Hazuku, Tomoji Takamasa, Takashi Hibiki. Many current investigations concern the behaviour of liquid-solid flows (e.g. in mixing, crystal growing, or materials processing) or gas-solid flows (e.g.

in cyclones or combustion equipment). However, of major interest for aerospace applications are the more complicated liquid-vapour or liquid-gas flows, that are characteristic for aerospace Author: Rodolfo Monti. Gravity. Created by. RRT Terms in this set () When Laplace's law is applied to a sphere with one liquid-gas interface, the equation is written as follows: If the radius of a tube that has gas flowing through it at 28 L/min is reduced by 16%, what will be the new gas flow through the tube.

any substance that flows;includes liquids and gases. solid. process of changing from gas to liquid ~ - energy. vaporization. process of changing form liquid to gas ~ + energy. the pull of gravity on an object. volume. the space occupied by an. Gravity is part of a bigger cycle that is driven by Atoms inside Matter to produce a flow of Aether that flows through planets and stars and back out into deep space where it inflates the universe.

Think of the earth like a big suction cup that is pulling us by our feet onto the surface of the planet. Such a column of liquid, real or imaginary, is called the “pressure head,” or the “static head” and is usually expressed in feet of liquid.

The flow of liquids may be caused by gravity or by mechanical means using one of the many types of pumps that may be available depending on the characteristics of the liquid and the nature of the. Gas-liquid flows, arising as it does out of Master level and post experience courses, is particularly suitable for these audiences.

However, book will also be a valuable source to researchers, not only to new readers coming to the subject for the first time, but also to those more experienced who will gain new insights from its contents.

gravity on two-phase gas-liquid flow through a fixed bed of solid particles by: Determining the flow patterns and transition boundaries in microgravity and testing the validity of flow regimes maps based on data in 1-g. Measuring the true frictional pressure drop for co-current gas-liquid flow through packed-beds and testing the validity of.

Study of gas-liquid two-phase flows under reduced gravity conditions is very important for space applications such as active thermal control systems. Two-fluid model along with Interfacial Area Transport Equation (IATE) is a useful tool available to dynamically predict the behavior of such two-phase flows under normal and reduced gravity.

A specific gravity gas flows from a 2-in. pipe through a 1-in. orifice-type choke. The upstream pressure and temperature are psia and 85 8 F, respectively.

The downstream pressure is psia (measured 2 ft from the orifice). The gas-specific heat ratio is (a) What is the expected daily flow rate. (b) Does heating need to be applied to ensure that the frost does. Paulsen, M. P., et. al.: RETRAN-3D: A programm for transient, thermal hydraulic analysis of complex fluid flow 1: Theory and numerics.

EPRI NP, Water is a truly unusual and important substance. The unique chemical properties of water that give rise to surface tension, capillary action, and the low density of ice play vital roles in life as we know it.

Floating ice protects aquatic organisms and keeps them from being frozen in the winter. Capillary action keeps plants alive. Surface tension allows lily pads to stay on the surface of a.

Complex fluids currently under investigation include fluids as diverse as colloids, foams, and granular aggregates. Multiphase flows and phase change involve investigations in two-phase flows, such as gas-liquid systems, in which gravity has a controlling influence on the flows due to the large density difference between the phases.

Measurement of Low GAS & Liquid Flows The Measurement Measurement with a float in a tapered borosilicate glass tube. •Series with a mm flow tube •Series with a mm flow tube •Series and with a mm flow tube •Regulating valve with a tapered plug and fine thread for precise flow adjustment.

Liquid hold-up profiles. Liquid and gas velocities. Inflow/outflow performance curves with the bottom-hole or wellhead as the node 7. Minimum gas rate for continuous removal of liquid from gas wells. REQUIRED. INPUT. DATA. There are five data files associated with PROMODl.

Well Data File .WDI) a. Company and project File Size: 1MB. THE EFFECT OF GRAVITY ON LIQUIDS. We've made a water-supply unit by punching a hole near the bottom of a one-quart milk carton, and inserting the end of a one-yard length of rubber tubing into the hole.

It fits snugly because we sealed it. Viscosity, as these fellow commentators have finely replied, is a characteristic independent of gravity, etc., based on a fluid material.

However, similar material viscosity at different altitudes will produce different effects on a body moving t. Gas entering the meter increases in velocity as it flows through the annular passage formed by the nose cone or upstream stator and the interior of the body.

The movement of the gas over the angled rotor blades exerts a force to the rotor causing it to rotate. The ideal rotational speed of the rotor is directly proportional to the flow rate.

Liquid-solid flow represents the flow of a liquid continuum carrying dispersed solid panicles suspended and conveyed by the drag and pressure forces of the liquid acting on the particles.

The aim of those slurry flows may be the transport of bulk-solids or physical or chemical processes between carrier liquid and solids. Clean gas exits through the accept port at the top of the separator. How it works. Gas containing entrained particles enters at high velocity through the tangential inlet at the top of the cyclone.

The gas flows into the cyclone body at the tangent and begins to flow in a circular downward flowing spiral, towards the lower reject port.

SPECIFIC GRAVITY / RELATIVE DENSITY OF GAS Myles J. McDonough, Jr. Chandler Engineering Company LLC P.O. BoxTulsa, OK HISTORY The terms Specific Gravity and Relative Density have been used for a number of years.

Yet there seems to be some confusion over what exactly they mean. Specific Gravity is formally defined as the File Size: 41KB. gas-liquid combinations available in the literature are compared and discussed.

The validity and investigate heat transfer in two-phase slug and annular flows under reduced gravity conditions, Fore. et al. reason behind the difference in flow pattern maps between horizontal and.

knowledge that the gravity eŠect on the liquid-vapor behavior and the heat transfer is negligible in the presence of bulk ‰ow in ‰ow boiling. Of course this is not true when the inertia, surface tension and viscous forces are weak compared to the body force due to gravity.

The boiling under reduced gravity conditions. Oil or gas wells produce a mixture of hydrocarbon gas, condensate, or oil; water with dissolved minerals, usually including a large amount of salt; other gases, including nitrogen, carbon dioxide (CO 2), and possibly hydrogen sulfide (H 2 S); and solids, including sand from the reservoir, dirt, scale, and corrosion products from the tubing.

For the hydrocarbons (gas or liquid) to be sold. Welcome to the most trusted and comprehensive Meters: Gravity Flow, Liquid pdf on the Internet. A broad range of Meters: Gravity Flow, Liquid resources are compiled in this industrial portal which provides information on manufacturers, distributors and service companies in the Meters: Gravity Flow, Liquid industry.Thermosyphon High pressure liquid refrigerant is flooded through a heat exchanger to absorb heat from download pdf oil.

Buoyancy forces drive the thermosyphon system from a receiver located near the condenser exit. Liquid flows by gravity to the compressor. As liquid evaporator gas rises to the condenser. The system may use a separate [email protected]{osti_, title = {Selecting gas/liquid separators}, author = {Talavera, P.G.}, abstractNote = ebook separation of liquid ebook from a gaseous stream entering process equipment is frequently desired to prevent equipment corrosion, yield loss, damage or malfunction.

Depending on the liquid's source, the particle size can be large enough to be .