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Tuesday, August 4, 2020 | History

3 edition of Turbulent compressible convection with rotation. found in the catalog.

Turbulent compressible convection with rotation.

Turbulent compressible convection with rotation.

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  • 2 Currently reading

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

    Subjects:
  • Transport properties.,
  • Three dimensional models.,
  • Thermodynamic properties.,
  • Turbulence.,
  • Shear flow.,
  • Rotating spheres.,
  • Laminar flow.,
  • Isotropy.,
  • Ideal gas.,
  • Hilsch tubes.

  • Edition Notes

    Other titlesFlow structure and evolution.
    StatementNicholas H. Brummell, Neal E. Hurlburt, and Juri Toomre.
    Series[NASA contractor report] -- NASA-CR-204561., NASA contractor report -- NASA CR-204561.
    ContributionsHurlburt, Neal E., Toomre, J. 1940-, United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15509229M

      if there is laminar to turbulent transition you'll need to use the transitional SST or equivalent. rke won't work in that case. But are you sure it will transition to a turbulent boundary layer? For natural convection, it would take > 1m. Your radiator would have to be fairly large. with heat transfer y+ of 4 is probably not good enough. the effects of rotation on compressible turbulence. It is shown that rotation modifies the transport proper-ties of compressible turbulence by replacing the turbulence time scale by a rotational time scale, much as rotation modifies the transport properties of incompressible turbulence. But thermal equilibrium properties.

    turbulent boundary layers with heat transfer and pressure gradient utilizing a compressibility transformation part i1 - constant property turbulent boundary - layer flow with simultaneous mass 'transfer and pressure gradient by j. boccio and c. economos general applied science laboratories, inc introduction. The Turbulent Boundary Layer in Compressible Flow W. F. CoP~, M.A., E., of the Engineering Division, N.P.L. Reports and Memoranda No. 28¢o* November, SummaryThe flow of a compressible gas past a fiat plate is investigated for a turbulent boundary layer. TheFile Size: KB.

    This volume contains the reviews and poster papers presented at the workshop Solar Convection and Oscillations and their Relationship: SCORe '96, held in Arhus, Denmark, May 27 - 31, The aim of this workshop was to bring together experts in the fields of convection and helioseismology, and to. Turbulent Boussinesq convection under the influence of rapid rotation (i.e. with com- parable characteristic rotation and convection timescales) is studied. The transition to turbulence proceeds through a relatively simple bifurcation sequence, starting with unstable convection rolls at moderate Rayleigh (Ra) and Taylor numbers (Ta) and.


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Turbulent compressible convection with rotation Download PDF EPUB FB2

Abstract. By performing a large eddy simulation of a section of the convection zone, we find that differential rotation in the solar convection zone is shaped by the thermal structure (specifically the latitudinal entropy gradient), rather than the Reynolds stress or meridional circulation, as suggested in nowadays semi-analytical : F.

Robinson. We examine the behaviour of penetrative turbulent compressible convection under the influence of rotation by means of three dimensional numerical simulations.

Abstract. Numerical simulations of 3D compressible convection in a local rectilinear geometry show that zonal and meridional mean flows, ū(z) and v;(z), can be produced when rotation is included.A wide variety of mean profiles can be achieved depending upon the parameters, including behaviour equivalent (within the limitations of the model) to that inferred from helioseismic solar Author: Nicholas H.

Brummell, Juri Toomre, Neal E. Hurlburt. Get this from a library. Turbulent compressible convection with rotation. II, Mean flows and differential rotation.

[Nicholas H Brummell; Neal E Hurlburt; J Toomre; United States. National Aeronautics and Space Administration.]. Get this from a library. Turbulent compressible convection with rotation. I, Flow structure and evolution. [Nicholas H Brummell; Neal E Hurlburt; J Toomre; United. Turbulent compressible convection with rotation Nic Brummell (1 so we go to vastly simplified models and study the physics of compressible convection.

The driving forces and fluid properties of the solar gases are such that the motions are almost certainly turbulent and hence we require large supercomputers to be able to model a situation. A Large Eddy Simulation of Turbulent Compressible Convection: Differential Rotation in the Solar Convection Zone on⋆† Department of Mathematics, The Hong Kong Universityof Science and Technology, Clear Water Bay, Kowloon, Hong Kong 22 October ABSTRACT We present results of two simulations of the.

A large-eddy simulation of turbulent compressible convection: differential rotation in the solar convection zone Francis J. Robinsonw² and Kwing L.

Chan Department of Mathematics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong. Turbulent convection under the influence of rotation and stratification redistributes momentum and energy,generating differential rotation, meridional circulation, and magnetic fields through.

Turbulent compressible convection with rotation–penetration below a convection zone lent convection by including rotation in an f-plane configu-ration with a view to study the effect of rotation on the pene-tration distance.

We compute a total of 13 models to see the. Fluid Dynamics Transactions, Volume 2 compiles 46 papers on fluid dynamics, a subdiscipline of fluid mechanics that deals with fluid flow. The topics discussed in this book include developments in interference theory for aeronautical applications; diffusion from sources in a turbulent boundary layer; unsteady motion of a finite wing span in a compressible medium; and wall pressure covariance.

Helical Buoyant Convection Modeling Mantle Convection Turbulent Transport in Rotating Compressible Convection Potential Vorticity, Resonance and Dissipation in Rotating Convective Turbulence Numerical Simulations of Convection in Protosellar Accretion Disks A New Model for Turbulence: Convection, Rotation and 2D Transport Using Transilient Matrices.

Rapidly Rotating Compressible Convection and the Breakdown of the Anelastic Approximation Michael A. Calkins, Keith Julien, Philippe Marti Department of Applied Mathematics, University of Colorado, Boulder Octo Convection in Rotating Fluids (Fluid Mechanics and Its Applications) semiconductor manufacturing), heating and rotation are the main mechanisms defining the structure and quality of the material.

interacting vortices and turbulent mixing. In this book the authors elucidate the physical essence of these phenomena, determining and Cited by:   Convection in a fluid heated from below, known as Rayleigh-Bénard convection, is an important turbulent process that occurs in the sun, planetary atmospheres, industrial manufacturing, and many other places.

Physicists and engineers have made much progress in understanding this phenomenon in simple laboratory geometries, but still have a way to go before they are able to. Our work with three-dimensional direct simulations of turbulent compressible convection influenced by rotation is motivated by trying to understand how stars and giant planets rotate differentially, and in particular to examine the redistribution of angular momentum that leads to.

Geophysical and Astrophysical Convection collects important papers from an international group of the world's foremost researchers in geophysical and astrophysical convection to present a concise overview of recent thinking in the field.

Topics include: Atmospheric convection, solar and stellar conv. The onset of compressible convection in rapidly rotating spherical shells is studied in the anelastic approximation.

An asymptotic theory valid at low Ekman number is developed and compared with numerical solutions of the full equations. Compressibility is measuredby the number ofdensity scaleheightsin the shell. In the Boussinesqproblem. Simulations concentrated on the occurrence of laminarization and property variations for high heat flux heat transfer.

The compressible filtered Navier-Stokes equations were solved using a second-order accurate finite volume method. Low Mach number preconditioning was used to enable the compressible code to work efficiently at low Mach by: 9. amples are normally in the range of turbulent convection (for solar convection up to Ra ∼ ).

Thus in this work we focus on the turbulent regime. An important result from non-rotating turbulent convection is the convective heat transfer, normalised by the conductive flux as the Nusselt number Nu, and.

turbulent compressible convection in a deep stellar atmosphere. For very high Reynolds number, the behaviors of the turbulent flows are greatly affected by the numerical and physical dissipation in the scheme. An investigation of these effects is necessary before the code is applied in practice.

By varying.'The book is foremost a lucid exposition of complementary analysis procedures that lead to an intuition and understanding of convection linked to magnetism in diverse settings. These certainly include the surface and interiors of stars, but so too magnetism built by convection in the molten cores of planets, and likely also in accretion disks.

Subgrid-Scale Modeling of Turbulent Convection Using Truncated Navier-Stokes Dynamics J. A. Domaradzki Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA Cited by: 1.