Temperature profile of an elliptic bore journal bearing

Non-circularity in bearing bore is obvious due to manufacturing irregularities like eccentricity in tool and job axis, small-amplitude vibration during machining, etc. But design relations/charts in journal bearing are based on bore circularity concept. Hence in reality non-circularity in bearing bore is bound to occur. The non-circularity in this paper is assumed to be elliptical and the numerical solution of Reynolds equation and Energy equation has been carried out for an elliptic bore journal bearing to outline the temperature profile. A comparison is made with the circular case to analyse the effect of this irregularity. The energy equation is solved adiabatically.