EFFECT OF SHAFT SPEED ON FILM THICKNESS FOR NEWTONIAN AND NON NEWTONIAN FLUID FOR JOURNAL BEARING

MECHANICAL ENGINEERING

Radial load is carried by cylindrical or ring-shaped bearing known as Journal Bearing. Now to carry high load and for critical power transmission Hydrodynamic journal bearing are used in various machines. In machines and turbines journal bearing are used because of their advantages of carrying high load and high speed applications. In this research paper, the work deals with steady state analysis of shaft speed on film thickness for Newtonian and non Newtonian fluid A first order perturbation approach has been employed to derive the Reynolds equation incorporating the effect of non-Newtonian fluid behavior. It is discretized using finite difference scheme and a computational algorithm based upon Newton-Raphson technique has been developed. The variation of lubrication characteristics in terms of fluid pressure distribution, film shape, minimum film thickness, coefficient of friction and attitude angle studied with respect to shaft speed.

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