buoyancy driven flows

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Buoyancy Driven Flows

Author : Eric Chassignet
ISBN : 9781107008878
Genre : Science
File Size : 82. 8 MB
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"This book summarizes present understanding of buoyancy-driven flows for advanced students and researchers in oceanography, geophysical fluid dynamics, atmospheric science, and Earth science"--Provided by publisher.

Buoyancy Driven Flows Through Openings

Author : Gavin Miles James Davies
ISBN : OCLC:59607295
Genre : Density currents
File Size : 70. 67 MB
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Effect Of Instabilities In The Buoyancy Driven Flow On The Bottom Oxygen Applications To The Louisiana Shelf

Author :
ISBN : 0549721185
Genre :
File Size : 26. 49 MB
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A combination of in situ sampling and numerical modeling was used to investigate the effects of mesoscale (

Multidisciplinary Design Approach And Safety Analysis Of Adsr Cooled By Buoyancy Driven Flows

Author : Carlos Alberto Ceballos Castillo
ISBN : 158603720X
Genre : Science
File Size : 62. 67 MB
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"The energy consumption in the world is directly related to the economical growth. The International Energy Agency estimates a doubling increase of electricity demands in the next 25 years (Energy Outlook, 2004). Somehow, this growth must be satisfied without destroying the ecological equilibrium of our planet. For this reason, all sorts of energy resources, which are potential pollutants for the environment are being investigated, and their technologies improved, plus new renewable energies are developed. It is also evident that renewables will take several decades before they are able to substitute the present capacity and even more, to cope with the future energy demands. Nuclear energy is an air pollution free technology with the potential to satisfy the worlds energy demands for many centuries. However, some concerns about the use of nuclear energy have to be further developed in order to recognize nuclear energy as a sustainable option. This book deals with concerns such as the use of nuclear energy for weapons, the risk of accidents with radioactivity release and the waste management."

Simulation Of Laminar Buoyancy Driven Flows In An Enclosure

ISBN : UOM:39015018969199
Genre :
File Size : 48. 15 MB
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rectangular cavity, three cells are found in the wide section.

Buoyancy Driven Flow During Solidification Using A Chemical Activity Model

Author : Joseph P. Miksan
ISBN : OCLC:644542392
Genre :
File Size : 74. 21 MB
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Buoyancy Driven Flow Excursions In Fuel Assemblies Revision 1

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ISBN : OCLC:68395298
Genre :
File Size : 51. 10 MB
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A power limit criterion was developed for a postulated Loss of Pumping Accident (LOPA) in one of the recently shut down heavy water production reactors at the Savannah River Site. These reactors were cooled by recirculating heavy water moderator downward through channels in cylindrical fuel tubes. Powers were limited to safeguard against a flow excursion in one or more of these parallel channels. During full-power operation, limits safeguarded against a boiling flow excursion. At low flow rates, during the addition of emergency cooling water, buoyant forces reverse the flow in one of the coolant channels before boiling occurs. As power increases beyond the point of flow reversal, the maximum wall temperature approaches the fluid saturation temperature, and a thermal excursion occurs. The power limit criterion for low flow rates was the onset of flow reversal. To determine conditions for flow reversal, tests were performed in a mock-up of a fuel assembly that contained two electrically heated concentric tubes surrounded by three flow channels. These tests were modeled using a finite difference thermal-hydraulic code. According to code calculations, flow reversed in the outer flow channel before the maximum wall temperature reached the local fluid saturation temperature. Thermal excursions occurred when the maximum wall temperature approximately equaled the saturation temperature. For a postulated LOPA, the flow reversal criterion for emergency cooling water addition was more limiting than the boiling excursion criterion for full power operation. This criterion limited powers to 37% of the limiting power for previous long-term reactor operations.

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