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Friday, July 24, 2020 | History

3 edition of Particle-laden weakly swirling free jets found in the catalog.

Particle-laden weakly swirling free jets

Particle-laden weakly swirling free jets

measurements and predictions

  • 251 Want to read
  • 36 Currently reading

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

    Subjects:
  • Jets -- Fluid dynamics.

  • Edition Notes

    Other titlesParticle laden swirling free jets.
    StatementDaniel L. Bulzan.
    SeriesNASA technical memorandum -- 100881.
    ContributionsUnited States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15361447M

      Supersonic particle-laden jet flows are found in a number of applications ranging from rocket engines, particle impactors [] and needle-free drug delivery [] to cold gas-dynamic spray processes [].In the cold gas-dynamic spray process, small solid particles (1–50μm) are accelerated to high velocities to form a solid deposit or coating on a substrate upon impaction. Particle-laden flows refers to a class of two-phase fluid flow, in which one of the phases is continuously connected (referred to as the continuous or carrier phase) and the other phase is made up of small immiscible particles (referred to as the dispersed or particle phase).Fine aerosol particles in air is an example of a particle-laden flow; the aerosols are the dispersed phase, and the air.

    Lee, Stokes, and Bertozzi Phys. Flu () A 2πP a FIG. 1. A helical channel of rectangular cross section of width spiral radius is A, while the vertical spacing between each turn is the pitch 2πP. sizes exit the separator at different radial Cited by: TURBULENCE MODULATION IN PARTICLE-LADEN FLOWS: THE DERIVATION AND VALIDATION OF A DISSIPATION TRANSPORT EQUATION Abstract by John D. Schwarzkopf, Ph.D. Washington State University December Chair: Prashanta Dutta In this research, a volume averaged dissipation transport equation is developed for particle laden turbulent flows.

    A Young Person’s Guide to Granular and Particle-Laden Flows Focus Day, 8 December Organisers: JMNT Gray and T Mullin A fresh perspective was placed on granular and particle-laden flows in seven talks given by young scientists. The talks included .   American Institute of Aeronautics and Astronautics Sunrise Valley Drive, Suite Reston, VA


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Particle-laden weakly swirling free jets Download PDF EPUB FB2

Particle-Laden Weakly Swirling Free Jets Measurements and Predictions Daniel L. Bulzan NASA Lewis Research Center Cleveland, Ohio Jian-Shun Shuen Sverdrup Technology, Inc.

(Lewis Research Center Group) NASA Lewis Research Center Cleveland, Ohio and Gerard M. Faeth The University of Michigan Ann Arbor, Michigan Prepared for the 24th Joint Cited by: 6. Get this from a library. Particle-laden weakly swirling free jets: measurements and predictions.

[Daniel L Bulzan; United States. National Aeronautics and Space Administration.]. Particle-Laden Weakly Swirling Free Jets: Measurements and Predictions Daniel L. Bulzan Lewis Research Center Cleveland, Ohio study is limited to the Investigation of particle-laden weakly swirling free jets.

For this case, the only interaction between the. Get this from a library. Particle-laden weakly swirling free jets: measurements and predictions.

[Daniel L Bulzan; Jian-Shun Shuen; Gerard M Faeth; United States. National Aeronautics and. Abstract. This paper is focussed on the calculation of turbulent swirling free jets.

Turbulence modeling is adressed by comparing the standard k-ε eddy viscosity model with the multiple time scale turbulence model, using two partitions of the turbulent kinetic energy relative performance of the models is assessed for gas free jets with swirl intensity up to Cited by: 1.

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Particle-laden weakly swirling free jets - Measurements and predictions.

DANIEL BULZAN, Free radicals, electronic metastables, and other energetic moleculesas Particle-laden weakly swirling free jets book rocket propellants Finite element simulation of jets in a crossflow with complex nozzleconfigurations for.

Underexpanded, supersonic gas-particle jets were experimentally studied using the shadowgraph technique in order to examine the influence of the dispersed particles on the shape of the free jet and the structure of the imbedded shock waves.

The particle mass loading at the nozzle exit was varied between zero and one, and two sizes of particles (i.e. spherical glass beads) with mean number Cited by: Particle-laden flows refers to a class of two-phase fluid flow, in which one of the phases is continuously connected (referred to as the continuous or carrier phase) and the other phase is made up of small, immiscible, and typically dilute particles (referred to as the dispersed or particle phase).Fine aerosol particles in air is an example of a particle-laden flow; the aerosols are the.

Particle-laden flows — overview Many natural and technological fluid dynamical processes involve complex multiphase interactions in which the carrier fluid exchanges mass, momentum, and energy with a dispersed particle field. Examples of such flows in nature include rain formation in.

Large-ed dy simulation of swirling particle-laden ßows in a coaxial-jet combustor S.V. Apte a,*, b, c, J.C. Oefelein d a Department of Mechanical Engineering, Stanford University, Bldg.ME/FPC, Escondido Mall, Stanford, CAUSA. This paper is devoted to the numerical and theoretical study of free turbulent glass particle-laden jets.

This study is based on results from a hybrid Euler/Lagrange simulation. DNS of a free turbulent jet laden with small inertial particles. Authors; Whitelaw, J.: Velocity and particle-flux characteristics of turbulent particle-laden jets. Proc. Soc. London A Casciola C.M. () DNS of a free turbulent jet laden with small inertial particles.

In: Kuerten H., Geurts B., Armenio V., Fröhlich J. (eds Cited by: 7. Mallouppas G. and B.G.M. van Wachem, Modelling of dense particle-laden pipe flow and a free jet, ICMF conf. proc., Tampa, FL, US, () A dynamic subgrid scale eddy viscosity model Article.

Turbulent Particle-Laden Gas Flows (Springer Series on Atomic, Optical, and Plasma Physics) Enter your mobile number or email address below and we'll send you a link to download the free Kindle App.

Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required. Apple. : Aleksei Y. Varaksin. Abstract: The structure of turbulent, dilute, particle-laden water jets, submerged in still water, was studied both experimentally and theoritically.

Nonintrusive measurements were made of mean and fluctuating phase velocities and particle number fluxes. Analysis was used to help interpret the measurements, considering three limiting cases, as follows: (1) locally-homogeneous flow, where Cited by: A particle laden air jet is discharged through a tube of 1 m of length.

The tube ends in a nozzle of 12mm exit diameter with a contraction ratio ofthe exact geometry of the nozzle is shown in fig The tube length allows the efficient mixing of both phases and this. COMBUSTION AND FLAME () Velocity Measurements in a Particle Laden Turbulent Free Jet Y.

LEVY and F. LOCKWOOD Department of Mechanical Engineering, Imperial College of Science and Technology, London SW 7, England INTRODUCTION The velocity measurements were effected using a standard forward scatter laser Doppler system with frequency by: Laboratory and computational fluid dynamics (CFD) model studies with turbulent, plane, particle-laden buoyant jets discharged horizontally into a quiescent ambient fluid have demonstrated that the presence of particles has no significant influence upon the buoyant jet trajectories over a wide range of forcing conditions and source concentrations of % or by: Sound scattering from a particle-laden, turbulent jet Alex E.

Hay Department of Physics and Ocean Sciences Center, Memorial University of Newfoundland, St. John's, NewfoundlandA1B 3X7, Canada Received 10 August ; accepted for publication 24 April ).

has been performed with these particle-laden jets although more work has been done with solid-gas jets and pure liquid jets. The solid-gas jet studies have determined a relationship between the size of the particles and their penetration when injected trans-versely into an air stream.

Edelman, Economos, and Boccio4 discovered.and the resultant bottom deposition of a horizontal particle-laden jet discharge (Fig. 1) with validation using experi-mental data. The present study focuses on a sediment-laden round jet in a stagnant ambient, neglecting the effects of buoyancy, and surface and bottom boundaries as in Cited by: 1.Reduced Model for Particle Laden Flow by Junjie Zhou Submitted to the Department of Mechanical Engineering on May 7,in partial fulfillment of the requirements for the degree of Master of Science in Mechanical Engineering Abstract The flow of thin liquid films on solid surfaces is a significant phenomenon in nature and.