S. Khushrushahi, T.A. Hatton, M. Zahn
Massachusetts Institute of Technology, Cambridge, MA, USA
Magnetic separation of magnetic liquid phases/particles from non-magnetic liquid phases/particles are needed for applications such as cleaning up oil spills by separating oil and water liquid phases or separating magnetic materials from non-magnetic materials in biomedical and microfluidic applications. Magnetic fluids (also called ferrofluids), in a magnetic field, experience a magnetic force ...
Finite Element Solution of Nonlinear Transient Rock Damage with Application in Geomechanics of Oil and Gas Reservoirs
S. Enayatpour, T. Patzek
The University of Texas at Austin, Austin, TX, USA
The increasing energy demand calls for advances in technology which translate into more accurate and complex simulations of physical problems. Understanding the rock damage is essential to understanding the geomechanics of hydrocarbon reservoirs. The fragile microstructure of some rocks makes it difficult to predict the propagation of fracture in these rocks, therefore a mathematical model is ...
M. Fernandes, D. Matthiesen
Case Western Reserve University, Cleveland, OH, USA
The CWRU Turbine is a research turbine located in a urban campus in Cleveland, Ohio. This location may create turbulence, resulting in a possible loss in energy generation. This research attempts to answers the question of whether the wind flow is affected by the buildings or not. The surrounding buildings, which vary in height from 20 to 40 meters, may affect the wind patterns at the hub height. ...
J.J. Gangloff Jr., W.R. Hwang, S.G. Advani
Center for Composite Materials, Department of Mechanical Engineering, University of Delaware, Newark, DE, USA
School of Mechanical Engineering, Gyeongsang National University, Jinju, Gyeongsangnam-do, Korea
Voids in composite materials can lead to degraded structural performance. The following is a study of voids or bubbles in uncured viscous polymer resin during composites processing. The goal is to determine if voids can successfully migrate towards vacuum pathways, coalesce with the pathways, and escape. Inherent to the coalescence process is the drainage and rupture of the resin thin film formed ...
K. Gajjar, U. Maradia, K. Wegener
Indian Institute of Technology Bombay, Mumbai, Maharshtra, India
Institute for Process Tools and Manufacturing (IWF), Zurich, Switzerland
Electrical Discharge Machining (EDM) is a non-conventional process used for machining electrically conducting materials. In die sink-EDM, sparks are generated between tool and workpiece resulting in heating of both electrode surfaces and creating a melt pool of metal which leads to generation of new surfaces on cooling. Physical processes involved in electric discharge and material removal are ...
R. Nopper, J. Clark, C. Miller
DuPont Company, Wilmington, DE, USA
DuPont Company, Beaumont, TX, USA
Stress and failure in the earth have long been observed to couple to hydrogeology. Poroelastic models, introduced by soil scientists, can account for strong two-way coupling between porous crustal rock formations and their pore fluids. Current efforts to provide new energy resources (water injection in EGS, enhanced oil recovery) and to reduce pollution (CO2 sequestration, deepwell disposal) ...
A Study of the Effects of Mounting Supports, and Dissipation on a Piezoelectric Quartz Double-Ended Tuning Fork Gyroscope
G. Choi, Y. Yong
Rutgers University, New Brunswick, NJ, USA
A COMSOL model of a piezoelectric quartz double ended tuning fork gyroscope was implemented. The gyroscope has two detection modes; the first mode detects the angular velocity about a z-axis perpendicular to the tuning fork plane (x-y plane), while the second mode detects the angular velocity about a y-axis that is the longitudinal axis along the length of the tuning fork. Eigenfrequency analyses ...
E. Evgin, J.A.I. Sedano , Z. Fu
University of Ottawa, Ottawa, ON, Canada
Energy piles transfer the mechanical loads from buildings to the ground and serve as heat exchangers. Temperature changes in the ground influence its moisture content. This paper examines the effect of soil moisture content on the shaft resistance of a pile. Tests were carried out in the laboratory to determine the mechanical properties of an interface corresponding to various soil moisture ...
K.O. Lund, C.M. Lord
Kurt Lund Consulting, Del Mar, CA, USA
Lord Engineering Corp., Encinitas, CA, USA
Pressure-drop experiments were conducted for the turbulent, compressible flow of air in a small, slender tube, and modeled with COMSOL heat transfer module, and analytically. A scalar integration variable is introduced which integrates the mass velocity [kg/m²s] over the inlet area and iteratively equates this to the input mass flow [kg/s]. For computation, the temperature specification is ...
Computation of Capacitance, Inductance, and Potential Distribution of Integrated-Circuit Interconnects for Unshielded Four Conductors with Three Levels Systems
S.M. Musa, M.N.O. Sadiku, J.D. Oliver
Prairie View A&M University, Prairie View, TX, USA
In this paper an attempt has been made to design and analyze integrated circuit interconnects for unshielded four conductors with three levels system using Finite Element Method (FEM). The computational and simulation work has been carried out with help of COMSOL Multiphysics software. We illustrate that FEM is as accurate and effective for modeling multilayered multiconductor transmission lines ...