Height and stability of laminar plane fountains in a homogeneous fluid
Height and stability of laminar plane fountains in a homogeneous fluid
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均匀流体中层流平面喷泉的高度和稳定性
DOI:
10.1016/j.ijheatmasstransfer.2008.02.022
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发表时间:
2008-09
影响因子:
5.2
通讯作者:
S. W. Armfield
中科院分区:
文献类型:
--
作者:
G. D. McBain;N. Srinarayana;林文贤;S. W. Armfield
The behaviour of plane fountains, resulting from the injection of a denser fluid upwards into a large body of a lighter homogeneous fluid, is investigated numerically. The transient behaviour of fountains with a uniform inlet velocity, Reynolds number Re=100, Prandtl number Pr=7, and Froude number 0.25⩽Fr⩽10.0 is studied numerically. In the present case, the density variation is as a result of temperature difference between the fountain and the ambient fluids. Three distinct regimes are identified; steady and symmetric fountains for 0.25⩽Fr⩽2.0, unsteady fountains with periodic lateral oscillation for 2.25⩽Fr⩽3.0, and unsteady fountains with aperiodic lateral oscillations for Fr⩾4.0. It is found empirically that the non-dimensional fountain height, zm, scales differently with Froude number in each of these regimes; in the steady and symmetric region zm∼Fr, in the unsteady and periodic lateral oscillation region zm∼Fr1.15and in the unsteady and aperiodic lateral oscillation region zm∼Fr4/3. The results are compared with previous numerical and experimental results, where available and are consistent.
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影响因子:
3.7
作者:
W. Baines;J. S. Turner;I. Campbell
通讯作者:
W. Baines;J. S. Turner;I. Campbell
DOI:
10.1017/s0022112099006953
发表时间:
2000-01
期刊:
J.Fluid Mech.
影响因子:
--
作者:
Wenxian Lin;S.W.Armfield
通讯作者:
S.W.Armfield
影响因子:
2.3
作者:
G. Abraham
通讯作者:
G. Abraham
影响因子:
3.7
作者:
Lynn J. Bloomfield;R. C. Kerr
通讯作者:
Lynn J. Bloomfield;R. C. Kerr
影响因子:
2
作者:
W. Lin;S. Armfield
通讯作者:
W. Lin;S. Armfield