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 ...
Pulsed Eddy Current Probe Development to Detect Inner Layer Cracks Near Ferrous Fasteners Using COMSOL Modeling Software
V. Babbar, P. Whalen, T. Krause
Department of Physics, Royal Military College of Canada, Kingston, ON, Canada
Surface breaking cracks in conductive structures can be detected by conventional eddy current techniques. However, it is very difficult to detect inner layer defects in multilayered conductive structures either by conventional eddy current or ultrasonic methods. The transient/pulsed eddy current (PEC) technology can potentially overcome these limitations and is being developed for detection of ...
Numerical Study and Simulation in COMSOL Multiphysics of the Dilution Process during Dust Sampling in Dry Machining
B. Wenga-Ntcheping, A. Djebara, R. Kamguem, J. Kouam, V. Songmene
University of Quebec-École de Technologie Supérieure, Montreal, Canada
Dilution’s issue during dry machining have raised the interest’s environmental researchers and engineers. In fact, the sampling of dust emitted during dry machining was a serious problem for air quality evaluation at the workplace. Furthermore, the best sampling of fine and ultrafine particles produced during material cutting, passed through the dilution of high particle concentration (number, ...
University of the West of Scotland, Paisley, Renfrewshire, UK
The Jecklin Disk is a sound absorbing disk placed between two omnidirectional microphones. It is used to recreate some of the frequency-response, time and amplitude variations human listeners’ experience, but in such a way that the recordings also produce a useable stereo image through loudspeakers. This paper presents a finite element model able to simulate the effects on sound propagation ...
POWER Engineers, Hailey, ID, USA
The National Electrical Safety Code (NESC) requires that high voltage power lines in the U.S. be designed to limit electrostatic effects on nearby equipment. An example is that of a large vehicle underneath a transmission line. The tires insulate the vehicle’s body from ground. If a person standing on the ground makes contact with the vehicle surface, 60 Hz current can pass through the ...
D. Groulx, F. Samara, P.H. Biwole
Department of Mechanical Engineering, Dalhousie University, Halifax, NS, Canada
Department of Mathematics and Interactions, University of Nice Sophia-Antipolis, Nice, France
Design of latent heat energy storage systems (LHESS) requires knowledge of heat transfer processes within them, as well as the phase change behavior of the phase change material (PCM) use. COMSOL Multiphysics can be used to model (LHESS). Natural convection plays a crucial role during the charging phase of the LHESS, and methods to incorporate this heat transfer mode within COMSOL simulation ...
D. Bassett, M. Carcasi, W. Printz
Tokyo Electron America, Austin, TX, USA
In semiconductor manufacturing, effective cleaning of structures with liquid is one of the most important and potentially difficult process steps. It is important because it remains the cheapest and most cost-effective method to remove particles and residues from the structures in order to prevent defects, but can also be difficult because as the structures dry, surface tension forces can cause ...
J.R. Puentes, T.A. Osswald, S. Schick, J. Berg
Polymer Engineering Center, University of Wisconsin, Madison, WI, USA
TEEL Plastics, Baraboo, WI, USA
The extrusion of polyolefin pipes suffers degradation due to mechanical design problems of the extrusion die that is commonly used. This study uses numerical and computational approaches to detect problematic areas in the die geometry. Simulations show that in the conventional die there are areas of stagnation and recirculation of the melt flow, resulting in greater residence times, one of the ...
M.K. Ghantasala, B.O. Asimba, A. Khaminwa, K.J. Suthar, D.C. Mancini
Department of Mechanical and Aeronautical Engineering, Western Michigan University, Kalamazoo, MI, USA
Advanced Photon Source, Argonne National Laboratory, Argonne, IL, USA
Physical Sciences and Engineering, Argonne National Laboratory, Argonne, IL, USA
The understanding of pH-sensitive hydrogel swelling response in different buffer environmental condition is essential for its use in different practical applications. This necessitates its simulation in steady state and transient conditions. This paper mainly deals with the details of the numerical simulation performed by developing coupled formulation of chemo-electro-mechanical behavior of ...
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 ...