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1. A circular step hydrostatic thrust bearing with outside diameter of 16 in. is to be designed to carry a load of 107 700 Ibf. The recommended film thickness based on the surface finish is h = 0.003 in. and the lubricant viscosity is u = 7.85x106 reyns. Note that for optimum stiffness r/ro = 0.53. Take density of the fluid as 880 kg/m² and cp = 1.88 J/g-K a) What recess size would you recommend? bl Determnine the corresponding pressure and flow rates

1. A circular step hydrostatic thrust bearing with outside diameter of 16 in. is to be designed to carry a load of 107 700 Ibf. The recommended film thickness based on the surface finish is h = 0.003 in. and the lubricant viscosity is u = 7.85x106 reyns. Note that for optimum stiffness r/ro = 0.53. Take density of the fluid as 880 kg/m² and cp = 1.88 J/g-K a) What recess size would you recommend? bl Determnine the corresponding pressure and flow rates

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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1. A circular step hydrostatic thrust bearing with outside diameter of 16 in. is to be designed to carry a load of 107 700 Ibf. The recommended film thickness based on the surface finish is h = 0.003 in. and the lubricant viscosity is u = 7.85x106 reyns. Note that for optimum stiffness r/r, = 0.53. Take density of the fluid as 880 kg/m³ and c, = 1.88 J/g-K a) What recess size would you recommend? b) Determine the corresponding pressure and flow rates. c) Determine the pumping power requirement, assuming that pumping efficiency is 80%. d) Determine the temperature difference between the leakage oil and reservoir. e) Determine the bearing stiffness.
Transcribed Image Text:1. A circular step hydrostatic thrust bearing with outside diameter of 16 in. is to be designed to carry a load of 107 700 Ibf. The recommended film thickness based on the surface finish is h = 0.003 in. and the lubricant viscosity is u = 7.85x106 reyns. Note that for optimum stiffness r/r, = 0.53. Take density of the fluid as 880 kg/m³ and c, = 1.88 J/g-K a) What recess size would you recommend? b) Determine the corresponding pressure and flow rates. c) Determine the pumping power requirement, assuming that pumping efficiency is 80%. d) Determine the temperature difference between the leakage oil and reservoir. e) Determine the bearing stiffness.
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