Journal ArticleDOI
Improvement of Lubrication Performance in External Gear Machines through Micro-surface Wedged Gears
Reads0
Chats0
TLDR
In this article, a micro-surface linear wedge is added to the lateral surfaces of the gear teeth to improve the lubricating ability of external gear machines, resulting in lower power losses and chance of wear during their operation.Abstract:
This article demonstrates how a properly designed micro-surface linear wedge added to the lateral surfaces of the gear teeth can improve the lubricating ability of external gear machines (EGMs), resulting in lower power losses and chance of wear during their operation. The approach of study is based on the use of a fluid structure interaction (FSI) model for the analysis of the lateral lubricating gaps developed in the authors' research team. Such a model is used to determine the best design of the wedged gear by considering the overall axial balance problem of pressure compensated EGMs for high-pressure applications. The article shows the numerical predictions along with the experimental verifications of the advantages offered by the proposed solution in terms of torque loss reduction for a particular reference pump.read more
Citations
More filters
Journal ArticleDOI
Study of a High-Pressure External Gear Pump with a Computational Fluid Dynamic Modeling Approach
TL;DR: In this article, a study on the internal fluid dynamic of a high-pressure external gear pump is described, where the pump has been analyzed with both numerical and experimental techniques, and the results like the volumetric efficiency, absorbed torque, and outlet pressure ripple have been compared with the experimental data.
Journal ArticleDOI
External gear pumps operating with non-Newtonian fluids: Modelling and experimental validation
Fnu Rituraj,Andrea Vacca +1 more
TL;DR: The technique of modelling external gear pumps that operate with non-Newtonian fluids is described, in particular, how the displacing action of the unit can be modelled using a lumped parameter approach which involves dividing fluid domain into several control volumes and internal flow connections.
Journal ArticleDOI
A review on methods of energy performance improvement towards sustainable manufacturing from perspectives of energy monitoring, evaluation, optimization and benchmarking
TL;DR: In this article , a comprehensive review and analysis from multi-perspectives of energy monitoring, evaluation, optimization and benchmarking are performed, which is conducive to understand the energy consumption pattern and take effective energy-saving measures.
Journal ArticleDOI
On the lubrication performance of external gear pumps for aerospace fuel delivery applications
TL;DR: In this paper, the authors present a study on the pressure compensation system of a fuel delivery EGP and show how the presence of frictional forces opposing the motion of the compensating element significantly affect the lubricating performance of the unit.
Journal ArticleDOI
The Influence of Radial and Axial Gaps on Volumetric Efficiency of External Gear Pumps
Paulina Szwemin,Wieslaw Fiebig +1 more
TL;DR: In this paper, the authors present the results of simulation studies of leakages in axial and radial gaps in an external gear pump carried out for different gap shapes and sizes, as well as various operating parameters.
References
More filters
Book
Fundamentals of fluid film lubrication
TL;DR: In this paper, the authors propose a simplified solution for deformation in dry contacts in Elastohydrodynamic Lubrication of Rectangular Conjunctions and a solution for elasthydrodynamic lubrication in ellipitcal conjunctions.
Journal ArticleDOI
Application of the finite volume method and unstructured meshes to linear elasticity
Hrvoje Jasak,H.G. Weller +1 more
TL;DR: The linear stress analysis problem is discretized using the practices usually associated with the FVM, including second-order accurate discretization on control volumes of arbitrary polyhedral shape; segregated solution procedure; and iterative solvers for the systems of linear algebraic equations.
Journal ArticleDOI
Micro-Textures in Concentrated Conformal-Contact Lubrication: Effects of Texture Bottom Shape and Surface Relative Motion
TL;DR: In this article, the effects of texture bottom shape and surface relative motion on lubrication enhancement using numerically generated textures by means of model-based virtual texturing and numerical simulation were investigated.
Journal ArticleDOI
Virtual Texturing: Modeling the Performance of Lubricated Contacts of Engineered Surfaces
Q. Jane Wang,Dong Zhu +1 more
TL;DR: In this article, the relationship between a dimpled texture design and the mixed lubrication characteristics for a typical counterformal contact was explored. And the authors demonstrated that virtual texturing is able to provide comparative information and directions for innovative surface design and optimization.
Journal ArticleDOI
Modelling and experimental validation of external spur gear machines for fluid power applications
Andrea Vacca,Marco Guidetti +1 more
TL;DR: The main phenomena characterizing the operation of the spur external gear units are successfully analyzed by means of a numerical model developed by the authors, and how it can be utilized for design purposes is described.
Related Papers (5)
Modelling and experimental validation of external spur gear machines for fluid power applications
Andrea Vacca,Marco Guidetti +1 more