Results 271 to 280 of about 21,181 (318)

Turbulent heat transfer via the F.E.M.: Heat transfer in rod bundles

International Journal for Numerical Methods in Fluids, 1983
AbstractHeat transfer associated with forced convection between bundles of cylindrical fuel rods is analysed using the finite element method. A subchannel technique is employed and the numerical results are compared with previous experimental and numerical values. The solid and fluid zones are analysed, for temperature distribution, as a single domain.
Taylor, C., Thomas, C. E., Morgan, K.
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Turbulence and turbulent heat transfer at supercritical pressure

2016
Energy ...
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Multi-time-scale turbulent heat transfer model for predictions of various turbulent heat transfer phenomena

International Journal of Advances in Engineering Sciences and Applied Mathematics, 2018
The turbulent heat transfer model has been a useful and powerful tool in the calculation of turbulence heat transfer for designs of equipment with engineering and industrial problems. Among turbulent heat transfer models, two-equation turbulence models for both velocity and thermal fields are one of the best models because they have more accurate ...
Hirofumi Hattori, Kenji Tsutsui
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A Study of Heat Transfer by Turbulence

1941
This paper consists of four main divisions. The first of these is a discussion of turbulence in a flowing fluid and of how heat and momentum are transferred thereby. The second is a presentation of the problems met in constructing the apparatus with which to measure the pertinent quantities connected with turbulent transfer.
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A review on heat transfer enhancement with turbulators

AIP Conference Proceedings, 2018
For the purpose of saving energy and material, it is important to make heat transfer more effective. The heat exchange improvement approach is generally used in applications which are dealing with heat transfer. These approaches are classified into two types i.e. active and passive.
Santosh D. Katkade, Rahul B. Barjibhe
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Turbulent Multiphase Flows with Heat and Mass Transfer

2013
Numerous industrial systems or natural environments involve multiphase flows with heat and mass transfer. The authors of this book present the physical modeling of these flows, in a unified way, which can include various physical aspects and several levels of complexity.
Borghi, Roland, Anselmet, Fabien
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On turbulent heat or mass transfer

Chemical Engineering Science, 1966
Abstract A connexion between renewal models and the theory of instability is suggested and—based on it—a relationship, viz., Eq. (1), between the renewal frequency and the imaginary part of the time coefficient of the perturbation. In this way the partial information supplied by the renewal models, which give only the dependence of the transfer ...
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On nonquasineutrality and turbulent heat transfer in a tokamak

Journal of Experimental and Theoretical Physics Letters, 1998
A new approach is proposed for describing a steady turbulent state formed far from thermodynamic equilibrium in the plasma column of a tokamak as a result of the development of microinstabilities. A fundamental feature of such a highly nonequilibrium plasma is its nonquasineutrality, i.e., the plasma properties are largely determined by electric fields
S. N. Gordienko, É. I. Yurchenko
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Pseudoboiling and heat transfer in a turbulent flow

Journal of Engineering Physics, 1968
Experimental data characterizing the onset of pseudoboiling in relation to flow rate, pressure, and tube diameter are presented for diisopropylcyclohexane (DICH).
N. L. Kafengauz, M. I. Fedorov
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Heat Transfer in Drop-Laden Turbulent Flows

Volume 1: Fluid Applications and Systems (FASTC); Fluid Measurement and Instrumentation (FMITC); Fluid Mechanics (FMTC); Multiphase Flow (MFTC)
Abstract We study the heat transfer process in a multiphase turbulent system composed by a swarm of large and deformable drops and a continuous carrier phase. For a shear Reynolds number of Re = 300 and a constant drops volume fraction of Θ = 5.4%, we perform a campaign of direct numerical simulations (DNS) of turbulence coupled with a ...
Mangani F., Zonta F., Roccon A., Soldati A.   +3 more
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