Natural Convection Heat Transfer in Water Near Its Density Maximum PDF Download
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Author: Yin-Chao Yen
Publisher:
ISBN:
Category : Density currents
Languages : en
Pages : 108
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Book Description
Author: Yin-Chao Yen
Publisher:
ISBN:
Category : Density currents
Languages : en
Pages : 108
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Book Description
Author: U.S. Army Cold Regions Research and Engineering Laboratory
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 0
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Book Description
Author: Dong-Shiun Lin
Publisher:
ISBN:
Category :
Languages : en
Pages : 412
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Book Description
Author: Michael Scott Bendell
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 112
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Book Description
Author: Khaled Ghaedi
Publisher: BoD – Books on Demand
ISBN: 1839691751
Category : Science
Languages : en
Pages : 172
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Book Description
Fluid-Structure Interaction (FSI), also known as engineering fluid mechanics, deals with mutual interaction between fluid and structural components. Fluid flow depending on the structural shape, motion, surface, and structural roughness, acts as mechanical forces on the structure. FSI can be seen everywhere in medicine, engineering, aerospace, the sciences, and even our daily life. This book provides the basic concept of fluid flow behavior in interaction with structures, which is crucial for almost all engineering disciplines. Along with the fundamental principles, the book covers a variety of FSI problems ranging from fundamentals of fluid mechanics to plasma physics, wind turbines and their turbulence, heat transfer, magnetohydrodynamics, and dam-reservoir systems.
Author: Virgil J. Lunardini
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 98
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Book Description
Experiments to study the melting of a horizontal ice sheet with a flow of water above it were conducted in a 35 m long refrigerated flume with a cross section of 1.2x1.2 m. Water depth, temperature, and velocity were varied as well as the temperature and initial surface profile of the ice sheet. The heat transfer regimes were found to consist of forced turbulent flow at high Reynolds numbers with a transition to free convection heat transfer. There was no convincing evidence of a forced laminar regime. The data were correlated for each of the regimes, with the Reynolds number, Re, or the Grashof number combined with the Reynolds number as Gr/Re to the 2.5 power used to characterize the different kinds of heat transfer. For water flowing over a horizontal ice sheet, the melting heat flux, for low flow velocities, was not found to drop below the value for the free convection case-488.5 W/sq m-as long as the water temperature exceeds 3.4 C. This is significant since the free convection melt values far exceed those for laminar forced convection. At the low flow velocities, the melting flux was not dependent upon the fluid temperature until the water temperature dropped below 3.4 C, when q sub c = 135.7 (Delta T). In general, the heat transfer was found to significantly exceed that of non-melting systems for the same regimes. This was attributed to increased free stream turbulence, thermal instability due to the density maximum of water near 4 C, and the turbulent eddies associated with the generation of a wavy ice surface during the melting.
Author: Robert Samuel Schechter
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 326
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Book Description
Author: Howard G. Maahs
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 532
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Book Description
Author: Nguyen Minh Phu
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
In this chapter, a water-filled square cavity with left hot wall and right cold wall was numerically investigated. The hot and cold wall temperatures are 10¬∞C and 0¬∞C respectively to examine the density inversion of natural convection water, i.e. water at 4¬∞C. In the middle of the square, there are circular and elliptical bodies to study fluid,Äìstructure interaction in terms of the thermohydraulic behavior and entropy generation. 2D numerical simulation was performed using finite volume method in Ansys fluent software with the assumption of laminar flow. The simulation results are compared with benchmark data to determine reliability. The results indicate that the body insertions increase the convection heat transfer coefficients at the best heat transfer positions due to impingement heat transfer. An increase in heat transfer rate of 1.06 times is observed in the case of circular body compared to none. There are three primary eddies in the cavity with bodies, whereas the cavity without body has two primary eddies. Maximum entropy generation was found in the upper right corner of cavity mainly due to high horizontal temperature gradient. Bodies of circle and vertical ellipse have almost the same thermohydraulic and entropy generation characteristics due to the same horizontal dimension which mainly effects on the downward natural convection current. The entropy generation of cavity with circular body is 1.23 times higher than that of the cavity without body. At positions y/L¬†=¬†1 on the hot wall and y/L¬†=¬†0.74 on the cold wall, the convection heat transfer coefficient is close to zero due to stagnant fluid.
Author: Natarajan Narayanan
Publisher: Springer
ISBN: 9811087733
Category : Technology & Engineering
Languages : en
Pages : 370
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Book Description
This book presents a collection of contributions from experts working on flow and transport in porous media around the globe. The book includes chapters authored by engineers, scientists, and mathematicians on single and multiphase flow and transport in homogeneous as well as heterogeneous porous media. Addressing various experimental, analytical, and modeling aspects of transport in sub-surface domains, the book offers a valuable resource for graduate students, researchers, and professionals alike.
