Last edited by Shakaktilar
Tuesday, August 4, 2020 | History

2 edition of Evaluation of a locally homogeneous flow model of spray combustion found in the catalog.

Evaluation of a locally homogeneous flow model of spray combustion

C-P Mao

Evaluation of a locally homogeneous flow model of spray combustion

by C-P Mao

  • 213 Want to read
  • 31 Currently reading

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

    Subjects:
  • Combustion -- Measurement

  • Edition Notes

    StatementC-P. Mao, G.A. Szekely, Jr., and G.M. Faeth ; prepared for Lewis Research Center under grant NGR 39-009-077
    SeriesNASA contractor report -- 3202
    ContributionsSzekely, G. A, Faeth, G. M, United States. National Aeronautics and Space Administration. Scientific and Technical Information Office, Lewis Research Center
    The Physical Object
    Paginationviii, [49] p. :
    Number of Pages49
    ID Numbers
    Open LibraryOL14930405M

    Detailed coverage of advanced combustion topics from the author of Principles of Combustion, Second Edition Turbulence, turbulent combustion, and multiphase reacting flows have become major research topics in recent decades due to their application across diverse fields, including energy, environment, propulsion, transportation, industrial safety, and nanotechnology. Most of the knowledge.   ignition, and combustion processes in a diesel spray formed by fuel injection into a constant-volume vessel under high-temperature and high-pressure conditions. Fuel concentration distributions in a spray and local non-homogeneous mixture distributions were compared with experimental results to verify the accuracy of the calculations.

    @article{MA_EWAN_JAINSKI_LU_DREIZLER_SICK_IHME_FTC, author="Ma, Peter C. and Ewan, Tim and Jainski, Christopher and Lu, Louise and Dreizler, Andreas and Sick, Volker and Ihme, Matthias", title="Development and Analysis of Wall Models for Internal Combustion Engine Simulations Using High-speed Micro-PIV Measurements", journal={{Flow. code and model verification, and the demonstration Research on combustion is being conducted at of computational codes for propulsion system Lewis Research Center to provide improved analyti- components. In the area of combustion, research cal models of the complex flow~ and chemical reac- has beln underway for some time in these three.

    LES/FMDF of Flow in a Rapid Compression Machine (RCM). We use a new LES/FMDF model to study the physics of flow, heat transfer, spray and combustion in an RCM with flat and creviced pistons. Our studies show that the temperature distribution in the RCM with creviced piston is more uniform than the RCM with flat piston. Generation, Vaporization, and Combustion of Droplet Arrays and Streams. In K. K. Kuo (Ed.), Recent Advances in Spray Combustion. Vol. (pp. ). An Evaluation of the Point Source Approximation in Spray Calculations. Method of Moments Solutions for a Laminar-Flow Aerosol Reactor Model. Aerosol Science and Technology, 34,


Share this book
You might also like
law of woman life.

law of woman life.

Reconstructing South African liberalism

Reconstructing South African liberalism

Onsite wastewater treatment and disposal systems.

Onsite wastewater treatment and disposal systems.

Exterior sound levels of individual vehicles on five types of concrete pavement

Exterior sound levels of individual vehicles on five types of concrete pavement

Progress in phycological research

Progress in phycological research

United States political and economic policy toward China

United States political and economic policy toward China

Shorter novels of the eighteenth century

Shorter novels of the eighteenth century

Maid of Florence

Maid of Florence

liturgie, son sens, son esprit, sa méthode

liturgie, son sens, son esprit, sa méthode

analysis of the support available to women entrepreneurs and their businesses in the UK.

analysis of the support available to women entrepreneurs and their businesses in the UK.

Macmillan dictionary of biography

Macmillan dictionary of biography

Cincinnatis colored citizens

Cincinnatis colored citizens

Documents of American broadcasting

Documents of American broadcasting

Evaluation of a locally homogeneous flow model of spray combustion by C-P Mao Download PDF EPUB FB2

Evaluation of a locally homogeneous flow model of spray combustion. Washington, D.C.: National Aeronautics and Space Administration, Scientific and Technical Information Office ; [Springfield, Va.: For sale by the National Technical Information Service], University of Oklahoma Libraries.

Services. Navigate; Linked Data; Dashboard; Tools / Extras; Stats; Share. Social. Mail. A simplified model of high pressure spray combustion Symposium (International) on Combustion, Vol. 18, No. 1 Evaluation of a locally homogeneous flow model of spray combustionCited by: Methods of modeling spray evaporation and combustion processes are also discussed including: one-dimensional models for rocket engine and prevaporized combustion systems, lumped zone models (utilizing well-stirred reactor and plug flow regions) for gas turbine and furnace systems, locally homogeneous turbulent models, and two-phase models.

Evaluation of a locally homogeneous flow model of spray combustion. By G. Faeth, Jr. Szekely and C. Mao. Abstract. A model of spray combustion which employs a second-order turbulence model was developed.

The assumption of locally homogeneous flow is made, implying infinitely fast transport rates between the phase. Author: G. Faeth, Jr. Szekely and C. Mao. Mao and G. Szekely and G. Faeth and C-p. Mao and G. Szekely and G.

Faeth}, title = {NASA Contractor Report Evaluation of a Locally Homogeneous Flow Model of Spray Combustion. G.M. FAETH, in Energy and Combustion Science, Locally Homogeneous Flow Models. Thring and Newby suggested that overall quantities such as the length of spray flames could be estimated by assuming locally homogeneous flow, neglecting slip between the phases.

The spray is taken to be equivalent to a gas jet having the same momentum. In the present work, an unified derivation of simple evaporation models used in spray simulation is described and a new evaporation model is formulated. In the model, the Nusselt number, Sherwood number, and evaporation mass flux are derived using the traditional film theory.

Spray‐Combustion Systems. Fuel Atomization. Spray Statistics. Spray Combustion Characteristics. Classification of Models Developed for Spray Combustion Processes. Locally Homogeneous Flow Models. Two‐Phase‐Flow (Dispersed‐Flow) Models. Group‐Combustion Models of Chiu.

Droplet Collison. Optical Techniques for Particle Size Measurements. () and Williams () review various aspects of spray structure. The present paper is an extension of Faeth (a,b), discussing recent work on spray analysis and its evaluation with measurements.

Sprays and other dispersed flows arc normally divided into dilute and dense flow regimes. Both regimes am considered in this review. Dilute. A simplified model of spray combustion was evaluated.

The model was compared with measurements in both a gaseous propane flame and an air atomized n-pentane spray flame (35 micron Sauter mean diameter). Profiles of mean velocity, temperature, and species concentrations, as well as velocity fluctuations and Reynolds stress, were measured.

Cossali, G. An integral model for gas entrainment into full cone sprays. Peters, N. Four lectures on turbulent combustion. Tech.

Rep. RWTH Aachen. Quadros, G. Evaluation of a locally homogeneous flow model of spray evaporation. Evaluation of a Locally Homogeneous Flow Model of Spray Combustion C-P.

Mao, G. Szekely, Jr., and G. Faeth Pennsylvailia State University University Park, Penrlsylrlamia Prepared for Lewis Research Center under Grant NGR National Aeronautics and.

A mathematical model capable of describing the evaporation, mixing and burning characteristics of a confined reacting two-phase flow is presented.

The flow field is described by solving the partial differential equations of continuity, momentum, and energy transport, together with the k.

The validity of a steady-flamelet model and a flamelet/progress-variable approach for gaseous and spray combustion is investigated by a two-dimensional direct numerical simulation (DNS) of gaseous.

22 SGS analysis of the evolution equations of the mixture fraction and the progress variable variances in the presence of spray combustion Amajor input parameter of the non-premixed turbulent combustion models is the mixture fraction variable (denoted Z in this paper), which characterizes locally the mixing between the evaporated fuel and the gaseous oxidizer.

A.D. Gosman's research works with 5, citations and 7, reads, including: Entrainment and Inlet Suction: Two Mechanisms of Hydrodynamic Lubrication in Textured Bearings.

A review is given of single-droplet vaporization models for spray combustion studies. Formulations and numerical methods for the analysis and solution of the two-phase vaporizing and reacting spray problem are discussed. Both one-dimensional and axisymmetric geometries.

Approach to fully coupled nozzle flow and spraysimulations developed and published. Advanced Ignition Research Relevantto SI as well as mixed-mode combustion.

Challenging operation, requires predictive SI models. No models are available for non-conventionalignition systems[Low-temperature plasma (LTP)]. LESI model copyrighted and available. ABSTRACT. Because of intense flow recirculations and strong local depression, cavitation occurs in high-pressure Diesel injectors.

Because experiments are very difficult to perform for injection conditions (small length and time scales, high-speed flow, etc.), multidimensional modeling seems to be an appropriate tool in order to better understand the flow features inside and at the exit of the.

The coupling frequency for Lagrangian (in the case of spray combustion) and radiation can be adjusted for faster run times.

– Lagrangian update can be done once every time-step – Dynamic load balancing for Lagrangian spray helps with speed up Set-up of monitors for means and variance in LES. Start sampling after flow times.The stochastic part, which represents the impact of the SGS flow field, is assumed to be locally homogeneous and isotropic and, therefore, governed by a Langevin-type equation.

The model is Title: Optimizing spray patterns with .COMBUSTION ANALYSIS EVALUATION Final Report Contract No: NAS D.O The prediction of the local flow properties of spray flames requires the solu-tions of multi-phase dynamics, and accounts for complex interactions between the In the dilute spray combustion models, the stochastic separated flow model is.