Combined effects of non-Newtonian couple stresses and fluid inertia on the squeeze film characteristics between a long cylinder and an infinite plate |
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| Affiliation: | 1. Department of Mechanical Engineering, Nanya Institute of Technology, P.O. Box 324-22-59, Jhongli, Taoyuan 320, Taiwan, ROC;1. University Institute of Chemical Engineering and Technology, Panjab University, Chandigarh 160014, India;2. Energy Research Centre, Panjab University, Chandigarh 160014, India;1. Petroleum Exploration and Production Research Institute of SINOPEC, Beijing 100083, China;2. State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;1. State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;2. Nanjing Research Institute of Electronics Technology, Nanjing 210039, China;1. Department of Mathematics, A.B.N. Seal College, Cooch Behar, West Bengal 736101, India;2. Department of Engineering Science, Academy of Technology, Hooghly 712121, India;3. Department of Mathematics, Jadavpur University, Kolkata, West Bengal 700032, India |
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| Abstract: | On the basis of the Stokes micro-continuum theory together with the averaged inertia principle, the combined effects of non-Newtonian couple stresses and convective fluid inertia forces on the squeeze film motion between a long cylinder and an infinite plate are presented. A closed-form solution has been derived for squeeze film characteristics including the film pressure, the load capacity and the response time. Comparing with the Newtonian-lubricant non-inertia case, the combined effects of couple stresses and convective inertia forces provide an increase in the film pressure, the load capacity and the response time. In addition, the quantitative effects of couple stresses and convective inertia forces are more pronounced for cylinder–plate system operating at a larger couple stress parameter and film Reynolds number, as well as a smaller squeeze film height. To guide the use of the present study, a numerical example is also illustrated for engineers when considering both the effects of non-Newtonian couple stresses and fluid convective inertia forces. |
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