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Experimental Challenges And Solutions In Design And Operation Of The Test Rig For Water Lubricated Journal Bearing

Authors: Ravindra Mallya; B. Satish Shenoy; B. Raghuvir Pai;

Experimental Challenges And Solutions In Design And Operation Of The Test Rig For Water Lubricated Journal Bearing

Abstract

{"references": ["Wojciech Litwin, \"Water lubricated bearings of ship propeller shafts \u2013\nproblems, experimental tests and theoretical investigations\", Polish\nMaritime Research, 4(62) Vol. 16; 2009, pp 42 \u2013 50.", "Nakano et al., United States Patent, July 27, 1976, Patent Number \u2013\n3971606.", "D L Cabrera, N H Woolley, D R Allanson, Y D Tridimas, \"Film\npressure distribution in water lubricated rubber journal bearings\", Proc.\nIMechE, Journal of Engg Tribology, Vol. 219, 2005, pp 125 \u2013 132.", "Litwin W, \"The tests stands for water lubricated marine main shaft\nbearings\", NORDTRIB 2006, Helsingor, Denmark.", "R Pai, D J Hargreaves, R Brown, \"Modeling of fluid flow in a 3- Axial\ngroove water bearing using computational fluid dynamics\", 14th\nAustralian Fluid Mechanics Conference, Adelaide University, Adelaide,\nAustralia, 2001, pp 331 \u2013 334.", "Nan Wang, Qingfeng Meng, Pengpeng Wang, Tao Geng and Xiaoyang\nYuan, \"Research on film pressure distribution of water lubricated rubber\nbearing with multi axial grooves based on wireless measurement\ntechnique\", ASME, J. Fluids Eng. 135(8), 2013, pp 084501-1 \u2013 084501-\n6."]}

The study deals with the challenges in developing a test rig to test the performance of water lubricated journal bearing. The test rig is designed to simulate the working conditions of the bearing in order to understand their performance before they are put in operation. The bearing that is studied is the commercially available water lubricated bearing which has a rubber liner bonded with a rigid metal shell. The lubricant enters the bearing axially through a pressurized inlet tank and exits to an outlet tank which is at sufficiently low pressure. The load on the bearing is applied through the dead weight system which acts both in upward and downward direction so that net load acts on the bearing. The issues in feeding the lubricant into the bearing from the inlet side and preventing the leakage of the lubricant is discussed. The application of the load on the test bearing while maintaining the bearing afloat is also discussed.

Keywords

Axial groove, hydrodynamic pressure, test rig, journal bearing, water lubrication.

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