土木学会論文集B1(水工学)
Online ISSN : 2185-467X
ISSN-L : 2185-467X
水工学論文集第55巻
組織的渦構造からみた連行特性
楊 宏選陸 旻皎熊倉 俊郎早川 典生
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2011 年 67 巻 4 号 p. I_1579-I_1584

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Present work performed numerical simulations for jet-like, plume-like and off-source heated jet-like vortex pairs with standard k- model under OpenFOAM environment. It is shown that the total circulation of the eddy, which is considered to contribute to entrainment, increases due to buoyancy. Although eddy seems to be disrupted by the addition of heat away from the source, entrainment rate is reconfirmed to be increased in off-source heated jet. LES was also performed for pure jet, forced plume and off-source heated jet. Coherent vortical structures obtained under LES support the results gained from simulations of vortex pairs, and give more information on the relation between buoyancy and eddies.

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© 2011 公益社団法人 土木学会
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