Journal
PHYSICS OF FLUIDS
Volume 34, Issue 1, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0078270
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Funding
- UK Space Agency (STFC) [ST/S006354/1, ST/V005588/1, ST/W002256/1]
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This article investigates the thermovibrational flow in a differentially heated cubic cavity with vibrations applied parallel to the imposed temperature gradient. Through parametric analysis, it reveals the significant influence of the intrinsic three-dimensional nature of the problem and thermal boundary conditions on the flow structures and system response.
Thermovibrational flow in a differentially heated cubic cavity with vibrations applied in a direction parallel to the imposed temperature gradient is investigated by solving numerically the governing equations for mass, momentum, and energy in their original nonlinear form. A parametric analysis is conducted through the stepwise examination of the following degrees of freedom: magnitude of the Rayleigh number and the thermal behavior of the sidewalls. A complete characterization of the emerging time-varying convective structures is attempted in terms of spatial symmetries broken or retained, related temporal evolution, and global parameters, such as the Nusselt number. It is shown that the intrinsically three-dimensional nature of the problem and its sensitivity to the thermal boundary conditions can have a remarkable influence on the multiplicity of emerging solutions and the system temporal response.
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