Magnetic slot wedges are often used to improve starting performance of large induction motors. In this paper we have investigated – through simulation – the effects of the wedges on the performance characteristics of the motor and core losses under no load condition. Both analytical and hybrid two-dimensional field-circuit models have been used. In order to reliably establish the parameters of ...

Fluid flow in jointed rock mass with impermeable matrix is often controlled by joint properties, including aperture, orientation, spacing, persistence and etc. On the other hand, since the rock mass is made of heterogeneous and anisotropic natural materials, geometric properties of joints may have dispersed values. One of the most powerful methods for simulation of stochastic nature of geometri...

The relative permeability and saturation relationships through fractures are fundamental for modeling multiphase flow in underground geological fractured formations. In contrast to the traditional straight capillary model from porous media, realistic paths rough-walled tortuous. this study, a fractal relationship between of is proposed associated with characteristics tortuous parallel plates, w...

Female, born in 1975, Ph.D, Lecturer. She gained her doctoral degree from University of Greenwich (UK) in November 2008. Her research interests mainly focus on computational fluid dynamics (CFD), multiphase flow modeling and computational algorithms. E-mail: [email protected] Received: 2010-12-07; Accepted: 2011-04-13 *Hong Wang *Hong Wang , G. Djambazov and K. A. Pericleous (1. School of ...

Fluid-solid coupling is ubiquitous in the process of fluid flow underground and has a significant influence on the development of oil and gas reservoirs. To investigate these phenomena, the coupled mathematical model of solid deformation and fluid flow in fractured porous media is established. In this study, the discrete fracture model (DFM) is applied to capture fluid flow in the fractured por...

The sound generated during the production of the sibilant [s] results from the impact of a turbulent jet on the incisors. Physical modeling of this phenomenon depends on the characterization of the properties of the turbulent flow within the vocal tract and of the acoustic sources resulting from the presence of an obstacle in the path of the flow. The properties of the flow-induced noise strong...

Striking differences in the solidification textures of a nickel based alloy owing to changes in laser scanning pattern during additive manufacturing are examined based on theory and experimental data. Understanding and controlling texture are important because it affects mechanical and chemical properties. Solidification texture depends on the local heat flow directions and competitive grain gr...

This study presents the computational analysis of three dimensional Casson and Carreau nanofluid flow concerning the convective conditions. To do so, the flow equations are modified to nonlinear system of ODEs after using appropriate self-similarity functions. The solution for the modified system is evaluated by numerical techniques. The results show the impacts of involving variables on flow c...