Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abramgem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

A Flow and Transport Model in Porous Media for Microbial Enhanced Oil Recovery Studies Using COMSOL Multiphysics® Software

M. A. Diaz-Viera [1], A. Ortiz-Tapia [1],
[1] Mexican Petroleum Institute, Mexico City, Mexico

A flow and transport model in porous media was implemented in COMSOL Multiphysics® software to simulate, analyze and interpret Microbial Enhanced Oil Recovery (MEOR) processes at core scale under laboratory conditions. The flow model is biphasic and is based on the oil phase pressure and total velocity formulation in which the capillary pressure, relative permeabilities, the effects of ...

A Comparison of Discrete Fracture Models for Single Phase Flow in Porous Media Using COMSOL Multiphysics® Software

C. A. Romano-Pérez [1], M. A. Díaz-Viera [2],
[1] Facultad de Ingeniería, Universidad Nacional Autónoma de México, Coyoacán, DF, México
[2] Ingeniería de Recuperación Adicional, Instituto Mexicano del Petróleo, Gustavo A. Madero, DF, México

A comparison of discrete fracture and explicit fracture models for single-phase flow in fractured porous media using COMSOL Multiphysics® software is presented to understand the contribution of each individual fracture to fluid flow, and the exchange between fracture and surrounding medium at a scale such that the fractures could be modeled explicitly. The derived flow models are based on the ...

Comparison of Diffusion Flux Models for Fischer-Tropsch Synthesis

A. Nanduri [1], P. L. Mills [1],
[1] Department of Chemical and Natural Gas Engineering, Texas A&M University - Kingsville, Kingsville, TX, USA

The Fischer-Tropsch Synthesis (FTS) is a highly exothermic condensation polymerization reaction of syngas (CO+H2) in the presence of Fe/Co/Ru-based catalysts to produce a wide range of paraffins, olefins and oxygenates, the latter of which is often called syncrude. Multi-Tubular Fixed Bed Reactors (MTFBR) and Slurry Bubble Column reactors (SBCR) are widely employed for FTS processes [1]. To ...

Numerical Optimization Strategy for Determining 3D Flow Fields in Microfluidics

A. Eden [1], M. Sigurdson [1], C. D. Meinhart [1], I. Mezic [1],
[1] University of California - Santa Barbara, Santa Barbara, CA, USA

Measurement of three dimensional, three component velocity fields is central to the development of effective micromixers for bioassays and lab-on-chip mixing applications. We present a hybrid experimental-numerical method for the generation of 3D flow information from 2D particle image velocimetry (PIV) experimental data and finite element simulations. An optimization algorithm is applied to a ...

COMSOL Multiphysics® Simulation of the Electrokinetic Effect in Gidrogeology

M. A. Narbut [1], K. V. Titov [1], P. K. Konosavsky [1],
[1] Saint Petersburg State University, Saint Petersburg, Russia

The groundwater flow is accompanied by the electric field with potential called usually the streaming potential or the Self-Potential (SP) to be measured on the ground surface (e.g., Rizzo et al., 2004; Bolève et al., 2007; Jardani et al., 2009). We studied numerically the SP signals associated with pumping test experiments in layered aquifers using COMSOL Multiphysics® software and GWFGEM ...

Multiphysics CAE of Shock Absorber

A. Prasad [1], R. C. Thiagarajan [1],
[1] ATOA Scientific Technologies, Bengaluru, Karnataka, India

A Shock absorber is a mechanical device engineered to absorb high impact load and provide comfort while riding on a rough roads. Suspension springs are the key components of a shock absorber to resist critical impact loads and provide ride comfort. The cylindrical spring designs comes with several limitation which can not operate under heavy impact loads. This experiment deals with the ...

MEMS Cleanroom Particle Contamination Flow Visualization through Fluid-Structure Interaction Simulation

S. P. Regalla [1], S. R. Vutla [1], A. Shushanth [1], P. K. Pattnaik [1], K. Ramaswamy [1], M. B. Srinivas [1]
[1] Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, Telangana, India

This paper reports the simulation of micro-electro-mechanical system (MEMS) cleanroom for the purpose of determining the effect of particulate contaminants on the static stress response of cantilever type MEMS devices, such as high precision MEMS pressure sensor. The contaminant presence has been qualitatively verified through computational fluid dynamic simulation of the clean room in COMSOL ...

Analytical Method to Evaluate EMF Induced in Ionic Liquid by Magnetic Field

S. Dasgupta [1], R. Kandasamy [1], P. Nenninger [2], F. Gotthardt [2],
[1] ABB Global Industries and Services Limited, India
[2] ABB Automation Products GmbH, Germany

Simplistic, 1D analytical calculations in electro-magneto-hydrodynamics are attractive to technologists and researchers given the computational resources and time required by 3 dimensional F.E. (Finite Element) tools. However, such analytical calculations need to be checked against 3D tools like COMSOL Multiphysics® which are more realistic. In this paper EMF induced in an ionic liquid flowing ...

Finite Element Model based Optimization of Pulsed Eddy Current Excitation Rise Time

N. N. Bharadwaj [1], V. Arjun [1], B. Purnachandra Rao [1]
[1]Indira Gandhi Centre for Atomic Research, Kalpakkam, India

Non-destructive Evaluation (NDE) techniques are widely used for early detection of defects in engineering components without impairing their future usefulness. Among them, Eddy Current (EC) technique is used for detection of defects in electrically conducting materials and it is known for its high speed inspection and reliability. Conventional EC technique uses sinusoidal excitation and has ...

Multiphysics Based Electrical Discharge Machining Simulation

A. Mishra [1], S. Bhattacharya [1], D. Datta [1], Santosh Kr [1], G. K. Dey [1]
[1] Bhabha Atomic Research Centre, Mumbai, India

This paper presents a Non Fourier heat conduction model to analyse the heat conduction from the electrical discharge plasma to the work piece in Wire Electric discharge Machining (EDM) process.A comparative study of the same with Fourier heat conduction is also simulated to study the difference between the two models. the results are validated by experiments in wire EDM process.