The Effect of Surface Roughness on the Performance of Hydromagnetic Squeeze Films between Two Conducting Rough Porous Elliptical Plates

Pragna A. VADHER

Makale detayları

The Effect of Surface Roughness on the Performance of Hydromagnetic Squeeze Films between Two Conducting Rough Porous Elliptical Plates

Yazarlar:

Pragna A. VADHER

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2008 Vol.32 Issue 4, pp.219-227

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000744832

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

The present study analyzed the performance of hydromagnetic  squeeze films between 2 conducting rough porous elliptical plates.  The bearing surfaces were assumed to be transversely rough.  The  roughness of the bearing surfaces was characterized by a stochastic  random variable with non-zero mean, variance, and skewness.  The  associated Reynolds equation was stochastically averaged with respect  to the random roughness parameter.  This equation was then solved with  appropriate boundary conditions to obtain the bearing performance  characteristics, such as load carrying capacity and response time.  The results are presented graphically.  It was observed that the  transverse surface roughness adversely affected the bearing system and  that the bearing suffered due to transverse surface roughness.  The  results show that hydromagnetic lubrication significantly increased  the load carrying capacity.  With this type of bearing system porosity  effects were almost negligible, up to a certain porosity.  Additionally, the load carrying capacity increased due to the  negatively skewed roughness and conductivity of the plates.  Furthermore, the negative effect induced by the porosity, standard  deviation, and variance (+ve) were compensated for, to a considerable  extent, by the combined effect of conductivity and magnetization in  the case of negatively skewed roughness.  Results of the present study  suggest that roughness must be given due consideration while designing  such bearing systems.

 

The present study analyzed the performance of hydromagnetic  squeeze films between 2 conducting rough porous elliptical plates.  The bearing surfaces were assumed to be transversely rough.  The  roughness of the bearing surfaces was characterized by a stochastic  random variable with non-zero mean, variance, and skewness.  The  associated Reynolds equation was stochastically averaged with respect  to the random roughness parameter.  This equation was then solved with  appropriate boundary conditions to obtain the bearing performance  characteristics, such as load carrying capacity and response time.  The results are presented graphically.  It was observed that the  transverse surface roughness adversely affected the bearing system and  that the bearing suffered due to transverse surface roughness.  The  results show that hydromagnetic lubrication significantly increased  the load carrying capacity.  With this type of bearing system porosity  effects were almost negligible, up to a certain porosity.  Additionally, the load carrying capacity increased due to the  negatively skewed roughness and conductivity of the plates.  Furthermore, the negative effect induced by the porosity, standard  deviation, and variance (+ve) were compensated for, to a considerable  extent, by the combined effect of conductivity and magnetization in  the case of negatively skewed roughness.  Results of the present study  suggest that roughness must be given due consideration while designing  such bearing systems.

Makale detayları

The Effect of Surface Roughness on the Performance of Hydromagnetic Squeeze Films between Two Conducting Rough Porous Elliptical Plates

Yazarlar: Pragna A. VADHER

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2008 Vol.32 Issue 4, pp.219-227

Belge Tipi: Makale

Yayın Tarihi: 3/2008

Belge Dili: Türkçe

Document ID (Org No.): 2000744832

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Pragna A. VADHER

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2008 Vol.32 Issue 4, pp.219-227

Belge Tipi:

Makale

Yayın Tarihi:

3/2008

Belge Dili:

Türkçe

Document ID (Org No.):

2000744832

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160