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Saturday, April 25, 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

by

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  • 38 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 LibraryOL18053578M

    Particle image velocimetry (PIV) has evolved to be the dominant method for velocimetry in experimental fluid mechanics and has contributed to many advances in our understanding of turbulent and complex flows. In this article we review the achievements of PIV and its latest implementations: time-resolved PIV for the rapid capture of sequences of vector fields; tomographic PIV for the capture of Cited by: Minimum Free Energy Pathways and Free Energy Profiles for Conformational Transitions Based on Atomic Molecular Dynamics Simulations, J. Chem. Phys. , /, by A. van der Vaart and M. Karplus. The Signaling Pathway of Rhodopsin, Struct (), by Y. Kong and M. Karplus. B. PI Dmitri Babikov. D. Babikov, V. A. Mozhayskiy and A. I. Krylov, "The photoelectron spectrum of elusive cyclic-N3 and characterization of the potential energy surface and vibrational states of the ion", J. Chem. Phys. , (15 pages), Bocanegra Evans, H., Dam, N., Bertens, G. and van de Water, W., "Making droplets glow in turbulence", Phys. Rev. Fluids, April , Vol. 5(4), pp. [] [] [] Abstract: We present a new technique to study preferential concentration of droplets in a turbulent air ential concentration is the tendency of droplets to cluster in regions of strain, while avoiding regions of rotation.


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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 potential 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.

Particle-laden Rayleigh-Bénard turbulence. Description. Abundantly present in natural and engineered systems, small particulate matter can modify fluid turbulence due to thermal and momentum feedback.

Particles of different sizes, shapes, and other variables can control the degree of interaction with the fluid. Namely, their inertial features. The results discussed below compare experimental evidence and predicted characteristics of weakly and strongly swirling, free and confined, jets and flames.

Weakly Swirling Flows All combustor problems entail the solution of many simultaneous nonlinear equations, including up to three velocity components, pressure, stagnation enthalpy, and. 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. 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 Find all results for Oceanography and marine science on Cambridge Core, the new academic platform by Cambridge University Press.

Numerical Simulations of Particle-Laden Turbulent Flows to Characterize the Two Different Types of Paint Spray; Bell-Cup Atomizer and Powder Spray Gun Tatsuya Soma 1), Shun Amemiya 1), Tomoyuki Katayama 1), Yasuhiro Saito 1), Yohsuke Matsushita 1), Hideyuki Aoki 1), Takao Inamura 2), Masatoshi Daikoku 3), Junichi Fukuno 4)Author: Tatsuya Soma, Shun Amemiya, Tomoyuki Katayama, Yasuhiro Saito, Yohsuke Matsushita, Hideyuki Aoki, Ta.

The particle-laden jet is another important example of a gas-solid flow. Gas-particle jets are fundamental to the operation of a furnace burning pulverized coal as well as sand blasting equipment and plasma-arc coating devices.

A jet conveying pulverized coal issuing into a corner-fired furnace is shown schematically in Figure 7. Intense. / - - Particle-laden jets: particle distribution and back-reaction on the flow Picano, Francesco; Sardina, Gaetano; Gualtieri, Paolo; Casciola, Carlo Massimo - 01a Articolo in rivista paper: JOURNAL OF PHYSICS.

Find all results for Hydrology, hydrogeology and water resources on Cambridge Core, the new academic platform by Cambridge University Press. Large Eddy Simulation of Confined Swirling Coaxial Jets. Sung-Eun Kim, Xuelei Zhu, Stefano Orsino. Modeling of the Vortex-Structure in a Particle-Laden Mixing-Layer.

Jens A. Melheim, Stefan Horender, Bubble Effect on the Structures of Weakly Turbulent Couette Taylor Flow. Amine Mehel, Celine Gabillet. Librivox Free Audiobook. Podcasts. Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library.

Internet Arcade. Top Full text of "Computational Fluid Dynamics" See other formats. 16th Int. Symp on Appl. Laser Techniques to Fluid Mechanics, Lisbon, Portugal, July 09 – 12, Estimation of particle sample bias in shear layers using velocity-data rate correlation coefficient K.

Bulusu1,*, J. Meyers2, M. Plesniak1 1: Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC, USA. Librivox Free Audiobook. Podcasts. Featured software All software latest This Just In Old School Emulation MS-DOS Games Historical Software Classic PC Games Software Library.

Internet Arcade. Top Kodi Archive and Support File Community Software Vintage Software APK MS-DOS CD-ROM Software CD-ROM Software Library. Transcript. 1 table of contents Prandtl Lecture - Monday, Ma - 1 1 Sound and turbulent shear flows Jan Delfs Plenary Anderson - Monday, Ma - 3 3 The Mathematics of Formation Control Brian D.

O. Anderson Plenary Khler - Tuesday, Ma - 5 5 Large-scale structures in turbulent boundary layers Christian Khler Plenary Perugia - .sf_epic Джеймс Лучено Cloak Of Deception. Mired in greed and corruption, tangled in bureaucracy, the Galactic Republic is crumbling. In the outlying systems, where the Trade Federation maintains a stranglehold on shipping routes, tensions are boiling over — while back in the comfort of Coruscant, the hub of civilized space and seat of Republic government, few senators seem.Günter Brenn, Helfried Steiner, Carole Planchette, István Kondor, Annalisa Mercuri and Georg Scharrer Trocknung partikelbeladener Pasten (drying of particle-laden pastes) Trocknung partikelbeladener Pasten (drying of particle-laden pastes) paper-5 Show publication in PURE.