Free convection flow past an impulsively started infinite vertical plate with Newtonian heating in the presence of thermal radiation and mass diffusion

Marneni NARAHARI; M. Yunus NAYAN

Makale detayları

Free convection flow past an impulsively started infinite vertical plate with Newtonian heating in the presence of thermal radiation and mass diffusion

Yazarlar:

Marneni NARAHARI | M. Yunus NAYAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 3, pp.367-378

Belge Tipi:

Makale

Yayın Tarihi:

2/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000744654

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

An analytical study of free convection flow near an  impulsively started infinite vertical plate with Newtonian heating in  the presence of thermal radiation and constant mass diffusion was  performed.  The mathematical model reduced to a system of coupled  linear partial differential equations for the velocity, the  temperature, and the concentration; the closed-form exact solutions  were obtained by the Laplace transform method.  Representative  velocity and temperature profiles were graphed and the numerical  values of the skin friction and the Nusselt number were calculated.  The effects of different system parameters, such as the radiation  parameter, buoyancy ratio, Grashof number, Prandtl number, Schmidt  number and time on the velocity, temperature, skin friction, and  Nusselt number, were examined in detail.  It was observed that the  velocity increased for aiding flows, whereas it decreased for opposing  flows.  The velocity decreased with increasing Schmidt number and  radiation parameter.  The skin friction decreased in the presence of  aiding flows whereas it increased in the presence of opposing flows.  Furthermore, the skin friction increased with increasing Schmidt  number and radiation parameter.

 

An analytical study of free convection flow near an  impulsively started infinite vertical plate with Newtonian heating in  the presence of thermal radiation and constant mass diffusion was  performed.  The mathematical model reduced to a system of coupled  linear partial differential equations for the velocity, the  temperature, and the concentration; the closed-form exact solutions  were obtained by the Laplace transform method.  Representative  velocity and temperature profiles were graphed and the numerical  values of the skin friction and the Nusselt number were calculated.  The effects of different system parameters, such as the radiation  parameter, buoyancy ratio, Grashof number, Prandtl number, Schmidt  number and time on the velocity, temperature, skin friction, and  Nusselt number, were examined in detail.  It was observed that the  velocity increased for aiding flows, whereas it decreased for opposing  flows.  The velocity decreased with increasing Schmidt number and  radiation parameter.  The skin friction decreased in the presence of  aiding flows whereas it increased in the presence of opposing flows.  Furthermore, the skin friction increased with increasing Schmidt  number and radiation parameter.

Makale detayları

Free convection flow past an impulsively started infinite vertical plate with Newtonian heating in the presence of thermal radiation and mass diffusion

Yazarlar: Marneni NARAHARI | M. Yunus NAYAN

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 3, pp.367-378

Belge Tipi: Makale

Yayın Tarihi: 2/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000744654

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Marneni NARAHARI | M. Yunus NAYAN

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2011 Vol.35 Issue 3, pp.367-378

Belge Tipi:

Makale

Yayın Tarihi:

2/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000744654

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160