TY - JOUR
T1 - Effect of a magnetic field on vortex instability of natural convection flow over a horizontal plate with blowing and suction
AU - Leu, Jin Sheng
AU - Jang, Jiin Yuh
N1 - Funding Information:
Financial support for this work was provided by the National Science Council of Taiwan, under contract NSC 93-2212-E-334-003.
PY - 2008
Y1 - 2008
N2 - The vortex instability characteristics of laminar magneto-hydrodynamic (MHD) natural convection flow over a horizontal plate with a prescribed surface temperature and mass flux are studied. In the base flow, similarity solutions are obtained for a specific magnetic field strength and surface mass flux. The stability analysis is based on the linear stability theory incorporated with the non-parallel flow model. The skin-friction factor, Nusselt number and instability parameters are obtained by conducting a parametric study of all relevant parameters, such as magnetic parameter M and blowing/suction parameter f w. It is found that the magnetic effect decreases the heat transfer rate and destabilizes the flow. Furthermore, the influence of magnetic effect on vortex instability is more pronounced for a blowing surface and fluid with Pr = 0.7. The present results can be utilized as the basis for potential engineering applications such as chemical vapor deposition and cooling of electronic packages.
AB - The vortex instability characteristics of laminar magneto-hydrodynamic (MHD) natural convection flow over a horizontal plate with a prescribed surface temperature and mass flux are studied. In the base flow, similarity solutions are obtained for a specific magnetic field strength and surface mass flux. The stability analysis is based on the linear stability theory incorporated with the non-parallel flow model. The skin-friction factor, Nusselt number and instability parameters are obtained by conducting a parametric study of all relevant parameters, such as magnetic parameter M and blowing/suction parameter f w. It is found that the magnetic effect decreases the heat transfer rate and destabilizes the flow. Furthermore, the influence of magnetic effect on vortex instability is more pronounced for a blowing surface and fluid with Pr = 0.7. The present results can be utilized as the basis for potential engineering applications such as chemical vapor deposition and cooling of electronic packages.
UR - http://www.scopus.com/inward/record.url?scp=49149090680&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=49149090680&partnerID=8YFLogxK
U2 - 10.1080/02533839.2008.9671442
DO - 10.1080/02533839.2008.9671442
M3 - Article
AN - SCOPUS:49149090680
VL - 31
SP - 879
EP - 884
JO - Chung-kuo Kung Ch'eng Hsueh K'an/Journal of the Chinese Institute of Engineers
JF - Chung-kuo Kung Ch'eng Hsueh K'an/Journal of the Chinese Institute of Engineers
SN - 0253-3839
IS - 5
ER -