Design analysis of the novel revolving vane expander in a transcritical carbon dioxide refrigeration system

A Subiantoro, KT Ooi - International Journal of Refrigeration, 2010 - Elsevier
In this paper, four possible design variants of the Revolving Vane expander have been
examined in relation to their application when using CO2 as the working fluid in a …

Friction model of a marine diesel engine piston assembly

GA Livanos, NP Kyrtatos - Tribology international, 2007 - Elsevier
In modern marine diesel engines, power output and in-cylinder firing pressures are
constantly increasing, leading to higher friction in engine components and especially in the …

[HTML][HTML] A novel method to evaluate the journal bearing forces with application to flexible rotor model

H Sayed, TA El-Sayed - Tribology International, 2022 - Elsevier
In this work, a novel method to evaluate the nonlinear bearing forces is introduced. The
method depends on using polynomial surface fitting to evaluate the bearing forces as a …

Approximate analytical solution to Reynolds equation for finite length journal bearings

GG Vignolo, DO Barilá, LM Quinzani - Tribology International, 2011 - Elsevier
The understanding of the behavior of hydrodynamic bearings requires the analysis of the
fluid film between two solid surfaces in relative motion. The differential equation that governs …

Dynamic coefficients and stability analysis of finite-length journal bearings considering approximate analytical solutions of the Reynolds equation

Š Dyk, J Rendl, M Byrtus, L Smolík - Tribology international, 2019 - Elsevier
The paper presents linearized coefficients for finite-length journal bearings based on the HD
forces with multiplicative correction polynomials applied to the infinitely short and the …

Theoretical study of a novel refrigeration compressor–Part I: Design of the revolving vane (RV) compressor and its frictional losses

YL Teh, KT Ooi - international journal of refrigeration, 2009 - Elsevier
This paper presents a new rotary type compressor, named 'Revolving Vane (RV)
compressor', in which frictional losses are effectively reduced through the radical use of a …

Approximating fluid bearing characteristics using polynomials for the nonlinear dynamics of rotating machines

TA El-Sayed, MI Friswell, H Sayed - Tribology International, 2023 - Elsevier
Modeling the nonlinear dynamics of rotors supported by finite length journal bearings is of
great importance in various engineering applications. In this study, four-dimensional …

Nonlinear dynamic behaviors of rod fastening rotor-hydrodynamic journal bearing system

D Hei, Y Lu, Y Zhang, F Liu, C Zhou… - Archive of Applied …, 2015 - Springer
The model of a rod fastening rotor-finite length journal bearing system is established in this
paper. The contact surfaces between the disks and rods are modeled as bending resistance …

Comprehensive design methodology for an engine journal bearing

H Hirani, K Athre, S Biswas - Proceedings of the Institution of …, 2000 - journals.sagepub.com
The trend towards high power output, high speed and low power loss in engines requires a
better understanding of bearing behaviour. Research in this area is directed more towards …

Lubricant shear thinning analysis of engine journal bearings

H Hirani, K Athre, S Biswas - Tribology transactions, 2001 - Taylor & Francis
The high shearing stresses encountered in the modern engine bearing lubricant film lead to
significant drop in viscosity of multigrade oils and affect the values of film thickness, power …