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Badu, E, Edwards, D J and Owusu-Manu, D (2012) Trade credit and supply chain delivery in the Ghanaian construction industry: Analysis of vendor interactions with small to medium enterprises. Journal of Engineering, Design and Technology, 10(03), 360-79.

Chileshe, N and Yirenkyi-Fianko, A B (2012) An evaluation of risk factors impacting construction projects in Ghana. Journal of Engineering, Design and Technology, 10(03), 306-29.

Garg, H C (2012) Theoretical modelling of orifice compensated symmetric hole-entry hybrid journal bearings. Journal of Engineering, Design and Technology, 10(03), 421-35.

  • Type: Journal Article
  • Keywords: journal bearing; lubrication; mechanical engineering; non-Newtonian lubricant; orifice restrictor; rheology; symmetric hole-entry; thermal effects
  • ISBN/ISSN: 1726-0531
  • URL: https://doi.org/10.1108/17260531211274756
  • Abstract:
    Purpose – The purpose of this paper is to present theoretical investigations of the static performance characteristics of orifice compensated symmetric hole-entry hybrid journal bearing considering the combined influence of rise in temperature and non-Newtonian behavior of the lubricant. Design/methodology/approach – The thermohydrostatic (THS) rheological solution of a hole-entry hybrid journal bearing system requires the simultaneous solution of Reynolds equation, energy equation and conduction equation along with appropriate boundary conditions. In the present study an iterative numerical solution scheme is used to establish pressure and temperature fields in the lubricant fluid-film. Findings – It is found that there is an increase in the oil requirement for a hybrid journal bearing with the specified operating and geometric parameters, when the viscosity of the lubricant decreases due to the rise in temperature and non-Newtonian behavior of the lubricant. Originality/value – The available literature concerning the orifice compensated symmetric hybrid/hydrodynamic journal bearings indicates that the thermal effects together with non-Newtonian behavior of lubricant due to additives mixed in the lubricants have been ignored in the analysis so as to obviate the mathematical complexity.

Li, H, Guo, H L, Kong, S C W and Chen, Z (2012) Optimization of curved roof surface design using GA. Journal of Engineering, Design and Technology, 10(03), 345-59.

Simon, M and Meyer, E L (2012) Low cost I-V system employing variable power supply unit as an electronic load. Journal of Engineering, Design and Technology, 10(03), 330-44.

Spillane, J P, Oyedele, L O and Meding, J v (2012) Confined site construction: An empirical analysis of factors impacting health and safety management. Journal of Engineering, Design and Technology, 10(03), 397-420.

Vinodh, S, Selvaraj, T and Praveen, T (2012) Design and development of agile product development cycle for rotary switches. Journal of Engineering, Design and Technology, 10(03), 380-96.