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A Self-Circulating Porous Bearing with a Wrapped-Around Reservoir

Balasoiu, Ana M.
http://rave.ohiolink.edu/etdc/view?acc_num=akron1354643325

Abstract Details

2012, Doctor of Philosophy, University of Akron, Mechanical Engineering.
The research herein offers a feasibility study for a new, revolutionary type of bearing which excludes an external lubricating circuit. This bearing has a stationary porous bushing whose inner diameter faces the bearing clearance, while the outer one faces a wrap-around reservoir. The eccentric shaft generates pressure difference ensuring the fluid to circulate naturally between these two regions. This circulating mechanism is described and numerically simulated using the full 3D Navier-Stokes equations for the fluid flow in the bearing clearance and the adjacent reservoir. The flow inside the porous matrix is modeled using: Darcy's law, the added Forchheimer term to account for the inertial effects as the speed increases and the Brinkman term to account for the hydrodynamic boundary effects at the interface between fluid and porous media and for the added shear effects inside the porous media. The thermal effects have been studied. The static and dynamic characteristics of the bearing have been mapped and discussed as a function of the bearing geometric features. In the second part of the dissertation the design and testing of the bearing prototype was described. Different reservoir depth configurations have been considered, various angular speeds, and various magnitude loads. Pressure and temperature measurement have been recorded circumferentially at the symmetry plan of the bearing. The orbits of the shaft have been monitored. The results of these experiments concluded that the new bearing was feasible and was functioning according to the theoretical predicted model.
Minel Braun, Dr. (Advisor)
Gerald Young, Dr. (Committee Member)
Fred Choy, Dr. (Committee Member)
Subramaniya Hariharan, Dr. (Committee Member)
Alex Povisky, Dr. (Committee Member)
Abhilash Chandy, Dr. (Committee Member)
288 p.
Mechanical Engineering
self-circulating bearing; self-contained bearing; porous media

Recommended Citations

Citations

  • Balasoiu, A. M. (2012). A Self-Circulating Porous Bearing with a Wrapped-Around Reservoir [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1354643325

    APA Style (7th edition)

  • Balasoiu, Ana. A Self-Circulating Porous Bearing with a Wrapped-Around Reservoir. 2012. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1354643325.

    MLA Style (8th edition)

  • Balasoiu, Ana. "A Self-Circulating Porous Bearing with a Wrapped-Around Reservoir." Doctoral dissertation, University of Akron, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1354643325

    Chicago Manual of Style (17th edition)

akron1354643325
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© 2012, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.