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Friday, July 24, 2020 | History

3 edition of Computational heat transfer analysis for oscillatory channel flows found in the catalog.

Computational heat transfer analysis for oscillatory channel flows

Computational heat transfer analysis for oscillatory channel flows

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  • 29 Currently reading

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

    Subjects:
  • Channel flow.,
  • Free-piston engines.,
  • Heat transfer.,
  • Incompressible flow.,
  • Laminar flow.,
  • Oscillating flow.,
  • Reynolds number.,
  • Stirling engines.,
  • Thermal analysis.

  • Edition Notes

    StatementMounir Ibrahim and Mohan Kannapareddy.
    SeriesNASA contractor report -- NASA CR-199238.
    ContributionsKannapareddy, Mohan., United States. National Aeronautics and Space Administration.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL15419724M

    duce turbulence in the channel, breaking the thermal boundary layer blocking heat transfer, and increase the performance of the cooling system. Being able to predict heat transfer coe cients, HTC, or Nusselt numbers, Nu, in the cooling channel and the metal temperature of the components, are of high importance in modern gas turbine design. heat transfer. The turbulent flow will however result in a larger pressure drop such that with a given fan/pump the fluid volume flow rate will be reduced. Proven empirical heat transfer correlations based on dimensionless analysis are used [] to predict the heat transfer coefficient, h [W/m2/C], for all convection rsurfaces in the machine.

    85 Computational Heat Transfer Engineer jobs available on Apply to Engineer, Heating Engineer, Mechanical Engineer and more! Section 9: Heat and mass transfer - A three-dimensional study of the heat and mass transfer within the irradiation space of the HIFAR fuel element; A comparison between computational and experimental results for a research combustor; Bouyancy effects of heat and mass transfer in developing laminar flow in a horizontal pipe; Viscous liquid film.

    The combined effect of a transverse magnetic field and radiative heat transfer on unsteady flow of a conducting optically thin viscoelastic fluid through a channel filled with saturated porous medium and nonuniform walls temperature has been discussed. It is assumed that the fluid has small electrical conductivity and the electromagnetic force produced is very by: Thianpong, International Communications in Heat and Mass Transfer 35 () [2] Turbulent flow and heat transfer enhancement in rectangular channels with novel cylindrical grooves, Jian Liu,GongnanXie, Terrence W. Simon, International Journal of Heat and Mass Transfer 81 ().


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Computational heat transfer analysis for oscillatory channel flows Download PDF EPUB FB2

Get this from a library. Computational heat transfer analysis for oscillatory channel flows. [Mounir Ibrahim; Mohan Kannapareddy; United States. National Aeronautics and Space Administration.].

This book, which is published in two volumes, studies heat transfer problems by modern numerical methods. Basic mathematical models of heat transfer are considered.

The main approaches to the analysis of the models by traditional means of applied mathematics are described. An oscillatory flow mixing reactor (OFM) consists of baffles placed perpendicular to the axis to form several compartments.

The fluid is oscillated between and 15 Hz—at an amplitude of typically 1 to mm (see Fig. ).The oscillating fluid motion interacts with each baffle to form vortices, and the resulting fluid motion gives efficient and uniform mixing in the space between the.

reported some interesting results on the free convective oscillatory flows induced by time dependent boundary conditions. While Umavathi et al [7] studied the unsteady oscillatory flow and heat transfer in a horizontal composite channel.

All the studies mentioned above ignored the pulsatile nature of the pressure Size: 87KB. This new edition updated the material by expanding coverage of certain topics, adding new examples and problems, removing outdated material, and adding a computer disk, which will be included with each book.

Professor Jaluria and Torrance have structured a text addressing both finite difference and finite element methods, comparing a number of applicable methods. These are lecture notes for AME Intermediate Heat Transfer, a second course on heat transfer for undergraduate seniors and beginning graduate students.

At this stage the student can begin to apply knowledge of mathematics and computational methods to the problems of heat transfer. Thus. A numerical investigation was conducted into channel flows with a tandem of transverse vortex generators in the form of rectangular cylinders.

The oscillatory behavior of the flow is studied. Data for heat transfer and flow losses are presented for ≤Re≤ and cylinder separation distances 1≤S/H≤4. The results are obtained by numerical solution of the full Navier-Stokes equations Cited by: A better knowledge of these temperature fields is essential to develop systematic design methodologies for heat exchangers in oscillatory flows.

The difference between heat transfer in oscillatory. The objective of the book is to help the students thoroughly understand the basic concepts and procedures of fluid dynamics, heat and mass transfer and implement computational methodology into a computer code and solve more complex problems on their own.

Theory and practice are combined in a simple and straightforward by:   In this paper, an analysis is made on the convective heat transfer of a nanofluid between two inclined parallel plates with a uniform heat flux boundary condition. The analytical solutions are obtained explicitly for the velocity, temperature, and pressure distributions, which are dependent on two parameters P 1 and P by: 5.

An investigation of turbulent oscillatory heat transfer in channel flows by large eddy simulation Article in International Journal of Heat and Mass Transfer 47() May with Extended Results for Fully Developed Laminar Forced Convection Heat Transfer in Trapezoidal Channels of Plate-Fin Exchangers J.

Thermal Sci. Eng. Appl (December, ) Conjugate Thermal Analysis of Air-Cooled Discrete Flush-Mounted Heat Sources in a Horizontal ChannelCited by: Further, to exhibit the performance of the present LES at high-Prandtl number, a typical case is considered for a fully developed turbulent channel flow with a passive heat transfer at Pr= and Re=10 4 based on the mean velocity and the half-width of the channel.

Fig. 1b shows the profile of mean temperature normalized by the friction temperature. Experimental and computational data given Cited by: Heat transfer in an oscillatory gas flow inside a parallel-plate channel with based on which the heat transfer data for steady flows is being applied to oscillatory flow conditions.

The presence of the annular effect was also verified by the numerical simulation of an oscillatory flow in a channel carried out by Sert and Beskok [11]. The aim of this investigation is to discuss the hydromagnetic flow and heat transfer of Maxwell fluid in a channel with oscillatory stretching walls.

Unlike typical heat transfer studies, here Cattaneo–Christov heat flux model is by: 4. Computational fluid dynamics (CFD) can be used to simulate the local surface heat transfer coefficients on the surfaces.

On the packages’ surfaces, the heat transfer coefficients vary from one cross-section to another and within each cross-section (Pham et al., ). The use of simulated CFD data allows the.

This is to certify that the dissertation report entitled, “A Computational Fluid Dynamics Study of Fluid Flow and Heat Transfer in a Micro channel” is submitted by Ashish Kumar Pandey, Roll. CH. To investigate turbulent oscillatory heat transfer in a channel flow, the three-dimensional, time-dependent filtered incompressible Navier–Stokes and energy equa-tions are simultaneously solved.

To non-dimensionalize these equations, the half-width of the channel d is used as the length scale, the mean friction velocity u s, which. The special issue on “Computational Analysis of Heat Transfer in Fluids and Solids” of the journal “Defect and Diffusion Forum” addresses various novel nonlinear models and computational techniques important for tackling the heat transfer phenomenon in fluids and solids.

Numerical results are discussed quantitatively to illustrate the salient features of practical engineering and. heat transfer enhancement in offset strip fin heat exchangers in self-sustained oscillatory flows Arash Saidi and Bengt Sunde n Division of Heat Transfer, Lund Institute of Technology, Lund, Sweden KeywordsFins, Heat transfer, Computational methods AbstractNumerical analysis of the instantaneous flow and heat transfer has been carried out forCited by:.

Abstract. Recent advances in heat transfer are discussed, providing data and methodology to solve a wide range of heat transfer problems. The topics considered include: basic concepts of heat transfer, mathematical methods, thermophysical properties, conduction, numerical methods in heat transfer, natural convection, and internal duct flow and external flows in forced convection.by comparing the computational results for a number of simple internal channel fluid flows with known experimental data.

The test cases are non-swirling and swirling flows in pipes and diffusers, flows in stationary and rotating bends. Satisfactory correspondence of results was obtained both for flow patterns and respective quantitative values.Computational Heat Transfer - CRC Press Book This new edition updated the material by expanding coverage of certain topics, adding new examples and problems, removing outdated material, and adding a computer disk, which will be included with each book.