Unstable Forced Convection in a Plane Porous Channel With Variable Viscosity DissipationSource: Journal of Heat Transfer:;2016:;volume( 138 ):;issue: 003::page 32601DOI: 10.1115/1.4031868Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Fully developed and stationary forced convection in a planeparallel porous channel is analyzed. The boundary walls are modeled as impermeable and subject to external heat transfer. Different Biot numbers are defined at the two boundary planes. It is shown that the combined effects of temperaturedependent viscosity and viscous heating may induce flow instability. The instability takes place at the lowest parametric singularity of the basic flow solution. The linear stability analysis is carried out analytically for the longitudinal modes and numerically for general oblique modes. It is shown that longitudinal modes with vanishingly small wave number are selected at the onset of instability.
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| contributor author | Barletta, A. | |
| contributor author | Celli, M. | |
| contributor author | Kuznetsov, A. V. | |
| contributor author | Nield, D. A. | |
| date accessioned | 2017-05-09T01:30:05Z | |
| date available | 2017-05-09T01:30:05Z | |
| date issued | 2016 | |
| identifier issn | 0022-1481 | |
| identifier other | ht_138_03_032601.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/161520 | |
| description abstract | Fully developed and stationary forced convection in a planeparallel porous channel is analyzed. The boundary walls are modeled as impermeable and subject to external heat transfer. Different Biot numbers are defined at the two boundary planes. It is shown that the combined effects of temperaturedependent viscosity and viscous heating may induce flow instability. The instability takes place at the lowest parametric singularity of the basic flow solution. The linear stability analysis is carried out analytically for the longitudinal modes and numerically for general oblique modes. It is shown that longitudinal modes with vanishingly small wave number are selected at the onset of instability. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Unstable Forced Convection in a Plane Porous Channel With Variable Viscosity Dissipation | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 3 | |
| journal title | Journal of Heat Transfer | |
| identifier doi | 10.1115/1.4031868 | |
| journal fristpage | 32601 | |
| journal lastpage | 32601 | |
| identifier eissn | 1528-8943 | |
| tree | Journal of Heat Transfer:;2016:;volume( 138 ):;issue: 003 | |
| contenttype | Fulltext |