The buoyant plume above a heat source

1970 ◽  
Vol 4 (5) ◽  
pp. 557-575 ◽  
Author(s):  
V.Kuppu Rao
Keyword(s):  
Heat Source ◽  
Buoyant Plume

Large-Eddy Simulation of a Buoyant Plume Past a Bluff Body

2010 ◽  
Author(s):  
Hitoshi Suto ◽  
Yasuo Hattori
Keyword(s):  
Large Eddy Simulation ◽  
Heat Source ◽  
Bluff Body ◽  
Disk Surface ◽  
Partial Slip ◽  
Buoyant Plume ◽  
Upward Flow ◽  
Flat Wall ◽  
Eddy Simulation ◽  
Large Eddy

A large-eddy simulation (LES) of a buoyant plume past a bluff body is performed. A round heat source is placed at the center of a horizontal flat wall, and a bluff body in the shape of a thick round plate is floating right above the heat source. The modified Rayleigh number based on the total heat input is set at 1.2×1010. On the basis of past studies, the Smagorinsky model is adopted as a subgrid-scale (SGS) model, and a partial slip boundary condition based on the wall law is applied to a horizontal flat wall and a disk surface. The validity of numerical results is ascertained by comparison with theoretical solution and experimental data. The blocking of upward flow and imparting turbulence through a bluff body vary the process of developing a buoyant plume, while properties of a fully developed plume rarely vary. With heat from a bluff body, another buoyant plume is formed near the center, piled with upward flow passing around the bluff body. Moreover, main positions of buoyant production of turbulent kinetic energy move a point from near the side of the bluff body to a point near the central axis. This affects the transition to a fully developed plume in turbulence statistics.

scholarly journals Buoyant Plume through a Permeable Porous Layer Located above a Line Heat Source in an Infinite Fluid Space.

1995 ◽  
Vol 38 (1) ◽  
pp. 79-85 ◽  
Author(s):  
Takashi Masuoka ◽  
Yasuyuki Takatsu ◽  
Shuji Kawamoto ◽  
Hidekazu Koshino ◽  
Takaharu Tsuruta
Keyword(s):  
Heat Source ◽  
Porous Layer ◽  
Buoyant Plume ◽  
Line Heat Source

Buoyant plume above concentrated heat source in stratified porous media.

1986 ◽  
Vol 52 (479) ◽  
pp. 2656-2662 ◽  
Author(s):  
Takashi MASUOKA ◽  
Yuji TOHDA ◽  
Takaharu TSURUTA ◽  
Toshiaki YASUDA
Keyword(s):  
Porous Media ◽  
Heat Source ◽  
Buoyant Plume

Buoyant plume above a horizontal line heat source

1973 ◽  
Vol 16 (4) ◽  
pp. 755-768 ◽  
Author(s):  
Fujii Tetsu ◽  
Morioka Itsuki ◽  
Uehara Haruo
Keyword(s):  
Heat Source ◽  
Horizontal Line ◽  
Buoyant Plume ◽  
Line Heat Source

scholarly journals Buoyant Plume through a Permeable Porous Layer Located above a Line Heat Source in an Infinite Fluid Space.

1993 ◽  
Vol 59 (558) ◽  
pp. 507-512
Author(s):  
Takashi Masuoka ◽  
Yasuyuki Takatsu ◽  
Shuji Kawamoto ◽  
Hidekazu Koshino ◽  
Takaharu Tsuruta
Keyword(s):  
Heat Source ◽  
Porous Layer ◽  
Buoyant Plume ◽  
Line Heat Source
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