Journal ArticleDOI
Calculation of turbulent flow and heat transfer in a porous-baffled channel
Yue-Tzu Yang,Chih-Zong Hwang +1 more
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In this article, the authors presented the numerical predictions on the turbulent fluid flow and heat transfer characteristics for rectangular channel with porous baffles which are arranged on the bottom and top channel walls in a periodically staggered way.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 2003-02-01. It has received 131 citations till now. The article focuses on the topics: Baffle & Nusselt number.read more
Citations
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Review of passive heat transfer augmentation techniques
TL;DR: In this paper, a review on progress with passive heat transfer augmentation is presented, where inserts are used in the flow passage to augment the heat transfer rate, where the insert manufacturing process is simple and these techniques can be easily employed in an existing heat exchanger.
Journal ArticleDOI
Numerical analysis of laminar heat transfer in a channel with diamond-shaped baffles☆
TL;DR: In this paper, the effects of different baffle tip angles on heat transfer and pressure loss in a two dimensional horizontal channel with isothermal walls and with staggered diamond-shaped baffles are investigated numerically.
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Fluid flow and heat transfer in microchannel heat sink based on porous fin design concept
TL;DR: In this paper, the authors proposed a new design concept of microchannel heat sink, in which solid fins are replaced by porous fins, to reduce the pressure drop across the heat sink.
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Thermal performance analysis of porous-microchannel heat sinks with different configuration designs
TL;DR: In this article, three-dimensional models of porous-microchannel heat sinks (porous-MCHSs) with different configuration designs, such as rectangular, outlet enlargement, trapezoidal, thin rectangular, block, and sandwich distributions, are verified.
Journal ArticleDOI
Internal cooling augmentation in rectangular channel using two inclined baffles
Prashanta Dutta,Akram Hossain +1 more
TL;DR: In this article, the authors investigated the local heat transfer characteristics and the associated frictional head loss in a rectangular channel with inclined solid and perforated baffles and found that the inline placement of baffles augments the overall heat transfer significantly by combining both jet impingement and the boundary layer separation.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
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Boundary conditions at a naturally permeable wall
TL;DR: In this article, a simple theory based on replacing the effect of the boundary layer with a slip velocity proportional to the exterior velocity gradient is proposed and shown to be in reasonable agreement with experimental results.
Journal ArticleDOI
Boundary and inertia effects on flow and heat transfer in porous media
Kambiz Vafai,Chuen-Lin Tien +1 more
TL;DR: In this article, the effects of a solid boundary and the inertial forces on flow and heat transfer in porous media were analyzed, and a new concept of the momentum boundary layer central to the numerical routine was presented.
Journal ArticleDOI
Void fraction distribution in beds of spheres
R. F. Benenati,C. B. Brosilow +1 more
TL;DR: The radial variation of void fraction within a packed bed of uniform spheres has been found to vary from unity at the wall to about 38% in the interior of large beds.