Convection in a fluid layer heated from below and subjected to time periodic horizontal accelerations
A theoretical study is presented of convection in a horizontal uid layer heated from below which is periodically accelerated in its plane. The analysis is based on Galerkin methods of the underlying Boussinesq equations. Shaking in a fixed direction breaks the original isotropy of the layer. At onset of convection we find longitudinal rolls, where the roll axis aligns parallel to the acceleration direction. With increasing acceleration amplitude a shear instability takes over and transverse rolls with the axis perpendicular to the shaking direction nucleate at onset.
convection instability
J.Tao W.Pesch F.H.Busse
LTCS and Department of Mechanics and Aerospace Engineering, Peking University, Beijing, 1000871 Chin Institute of Physics, University of Bayreuth, D-95440 Bayreuth, Germany
国际会议
The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)
上海
英文
2007-08-15（万方平台首次上网日期，不代表论文的发表时间）