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Wednesday, August 5, 2020 | History

2 edition of Combustion of porous solids at reduced gravitational conditions found in the catalog.

Combustion of porous solids at reduced gravitational conditions

A. L. Berlad

Combustion of porous solids at reduced gravitational conditions

by A. L. Berlad

  • 390 Want to read
  • 3 Currently reading

Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

    Subjects:
  • Combustion, Theory of.,
  • Matter -- Effect of reduced gravity on.

  • Edition Notes

    StatementA. L. Berlad and J. Killory ; prepared for Lewis Research Center under Grant NSG-3051.
    SeriesNASA contractor report -- NASA CR-3197.
    ContributionsKillory, J., United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., Lewis Research Center.
    The Physical Object
    Pagination106 p. :
    Number of Pages106
    ID Numbers
    Open LibraryOL17825592M

    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 . Dear Colleagues, The development of porous materials has attracted the attention of the research community for years. Porosity characteristics have specific impacts on material properties, and materials are applied in several areas, such as pollutant removal, CO 2 capture, energy storage, catalytic oxidation and reduction processes, conversion of biomass to biofuels, and drug delivery.

    He has co-edited eight books and authored numerous papers on the flammability and sensitivity of materials in oxygen-enriched environments under both normal gravity and reduced gravity conditions. He is an experienced short-course instructor and a member of ASTM's committee G4. The combustion and extinction behavior of a diffusion flame around a solid fuel cylinder (PMMA) in low-speed forced flow in zero gravity was studied numerically using a quasi-steady gas phase model. This model includes two-dimensional continuity, full Navier Stokes’ momentum, energy, and species equations with a one-step overall chemical Cited by:

    Porous medium burners are characterized by high efficiency and good stability. In this study, a new burner was proposed based on the combustion mechanism of the methane-air mixture in the porous medium and the preheating effect. The new burner is a two-section and double-deck porous medium with gas inlets at both ends. A mathematical model for the gas mixture combustion in the porous Cited by: 1. Start studying Fire Behavior and Combustion Final. Learn vocabulary, terms, and more with flashcards, games, and other study tools. the key condition for boilover in an open container of a combustible material is the presence of two immiscible layers. what temperature range is required for most organic solids to reach piloted ignition.


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Combustion of porous solids at reduced gravitational conditions by A. L. Berlad Download PDF EPUB FB2

Combustion of Porous Solids at Reduced Gravitational Conditions A. Berlad and J. Killory Stute University of New York ut Stony Brook Long Island, New York Prepared for Lewis Research Center under Grant NSG 1 National Aeronautics and Space Administration Scientific. Combustion of porous solids at reduced gravitational conditions.

Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Branch ; [Springfield, Va.: For sale by the National Technical Information Service], (OCoLC) Material Type: Government publication, National government publication. Burning of solids in oxygen-rich environments in normal and reduced gravity / (Washington, D.C.: National Aeronautics and Space Administration ; [Springfield, Va.: For sale by the National Technical Information Service], ), by Charles R.

Andracchio, Thomas H. Cochran, and Lewis Research Center (page images at HathiTrust). Combustion of porous solids at reduced gravitational conditions. the utility and the feasibility of a space shuttle-based experimental study of the combustion poroussolids at reduced Combustion of porous solids at reduced gravitational conditions book conditions.

This ground-based study employed the Lewis Research Center's g Author: A. Berlad and J. Killroy. combustion in reduced gravity is essential to adapt fire safety concepts and systems to the more stringent conditions of the space environment.

Benefits of conducting combustion research in microgravity can thus be. Experiments are carried out in a simplified drop system, which can provide a s 10−2 g reduced gravity period, to investigate the transition of solid material combustion behavior from normal.

Influence of Gravity on Combustion Synthesis of Advanced Materials. Combustion of Thermites in Reduced Gravity for Space Applications.

Discrete reaction waves: Gasless combustion of solid powder mixtures. Progress in Energy and Combustion Science, Vol. 34, No. by: Figure 2 shows T g (dash line) and T s (solid line) variation during the preheating procedure at V in = m/s and Φ = T g was obtained from T j and T s through the correction procedure described in Section With proper boundary conditions, flame in a porous medium can propagate as a wave.

After the ignition at the combustor exit, the temperature at N = 10 increases, and, then, the Cited by: An experimental apparatus designed to fly on the NASA KC reduced gravity aircraft was used to measure the oxidation rate and temperature of single, 1 mm diameter, porous carbon particles.

Increment of flame stability limit by heat recirculation based on the excess enthalpy theory was introduced more than four decades ago [1]. The primary experimental studies investigating the flame stability were done on burners containing a package of ceramic tubes [2], [3], [4].Cited by: The relevancy of conducting experiments with negligible natural convection is then discussed.

It is concluded that the most valuable means for reducing natural convection is to use reduced gravity conditions. The third section is devoted to some of the applications of microgravity conditions in the combustion field.

Purchase Characterization of Porous Solids II, Volume 62 - 1st Edition. Print Book & E-Book. ISBNBook Edition: 1. Numerical Simulation of Combustion in Reactive Porous Media A. Lapene, G. Debenest, M. Quintard, M. Martins and S. Salvador International Review of Mechanical Engineering, REME, Vol.

12, Praise Worthy Prize, ISSN -September Co-current combustion of oil shale - Part 1: Characterization of the solid and gaseous products. M.F. Martins, S. Salvador, J-F. Thovert, G. In the present work, computational fluid dynamics approach is adopted to study the possibility of using porous media in combustion and emission in a single-cylinder four-stroke spark ignition engine.

The combustion behavior inside the engine without and with application of porous media is studied. The analysis with application of PM signifies enhanced combustion : Debojit Sharma, Biplab Kumar Debnath. Mechanics and Physics of Porous Solids offers a critical reference on the physics of multiphase porous materials - key reading for engineers and researchers in structural and material engineering, concrete, wood and materials science, rock and soil mechanics, mining and oil prospecting, by: In recent years considerable progress has been made in the development of porous materials for, among others, catalysis, environmental protection, nano-engineering, pharmaceuticals and separation technology.

In addition, new procedures have been put forward for the design and characterization of model pore structures. This multi-authored reference covers in considerable detail the. SIAM Journal on Applied MathematicsAbstract | PDF ( KB) () Fronts, relaxation oscillations, and period doubling in solid fuel by:   Ilmenite, a natural mineral composed of FeTiO3, is a low-cost and promising oxygen carrier (OC) for solid fuels combustion in a chemical-looping combustion (CLC) system.

The aim of this study is to analyze the behavior of ilmenite as an OC in CLC and the changes in its properties through redox cycles. Experiments consisting of reduction−oxidation cycles in a thermogravimetric Cited by:   Reduced agglomeration in solid propellants containing porous aluminum 1 August | Proceedings of the Institution of Mechanical Engineers, Part Cited by: Microgravity Science on the ISS.

The Earth’s Surface • Weight felt because ground pushes against us reduced gravity or microgravity. oscillations could significantly affect flow stability. Flow in Porous Media. Heat Transfer. Heat conduction in solids and liquids not affected by gravity.

Heat conduction in gases indirectly reduced. Full text of "Ignition and Combustion Characteristics of Pure Bulk Metals: Normal-Gravity Test Results" See other formats ^. J^MJkM NASA-CRS89 //V.^ AIAA Ignition and Combustion Characteristics of Pure Bulk Metals; Normal-Gravity Test Results A.

Abbud-Madrid, G. J. Fiechtner, M. C. Branch, and J. W. Daily University of Colorado Boulder, CO 32nd Aerospace Sciences Meeting.The solid temperatures recorded for hybrid filtration combustion in wood pellets-alumina spheres porous media, decrease from K at φ = to K at φ = For butane/air mixtures in the inert and composite porous media the maximum absolute velocity value of ~ cm/s is observed for φ = (Fig.

2b).Cited by: 8.Gasification of municipal solid waste (MSW) is an attractive alternative fuel production process for the treatment of solid waste as it has several potential benefits over traditional combustion of MSW.

Syngas produced from the gasification of MSW can be utilized as a gas fuel being combusted in a conventional burner or in a gas engine to utilize the heat or produce by: 2.