NEURINGER-ROSEINWEIG MODEL BASED LONGITUDINALLY ROUGH POROUS CIRCULAR STEPPED PLATES IN THE EXISTENCE OF COUPLE STRESS

Acta Polytechnica

Yoginibahen Devendrasinh Vashi¹  Rakesh Manilal Patel²  Gunamani Biswanath Deheri³ 

[1] Gujarat Technological University, Alpha College of Engineering and Technology, kalol, Gujarat,382721, India;Gujrat University, Gujarat Arts and Science College, Ahmedabad, Gujarat-380006, India;Sardar Patel University, Department of Mathematics Vallabh vidyanagar, Gujarat-388120, India;

关键词: load bearing capacity, ferrofluid, longitudinal roughness, circular stepped plates;   

DOI  :  10.14311/AP.2020.60.0259

来源: DOAJ

【 摘 要 】

This study intents to scrutinize the impact of ferrofluid in the presence of couple stress for longitudinally rough porous circular stepped plates. The influence of longitudinal surface roughness is developed using the stochastic model of Christensen and Tonder for nonzero mean, variance and skewness. Neuringer-Roseinweig model is adopted for the influence of ferrofluid. The couple stress effect is characterized by Stoke’s micro continuum theory. The modified Reynolds’ type equation is stochastically averaged and solved by no-slip boundary conditions. The closed form solutions for load bearing capacity and film pressure are obtained as a function of different parameters and plotted graphically. It is perceived that the load capacity gets elevated owing to the combined influence of magnetization and couple stress when the proper choice of roughness parameters (negatively skewed, standard deviation) is in place. Porosity and roughness (positively skewed) adversely affect bearing’s performance. The graphical and tabular analysis shows that there is a significant growth in load bearing capacity compared to the conventional lubricant case.

【 授权许可】

Unknown