Ici vous trouverez les présentations issues des Conférences COMSOL à travers le monde. Réalisées par des utilisateurs de COMSOL Multiphysics, ces présentations explorent tous les domaines actuels d'innovation. Les applications couvrent pratiquement tous les secteurs industriels et impliquent des phénomènes électriques, mécaniques, fluidiques et chimiques. Utilisez la recherche rapide pour trouver les présentations les plus intéressantes dans votre domaine d'intérêt.

Wind Flow Modeling of Area Surrounding the Case Western Reserve University Wind Turbine

M. Fernandes[1], D. Matthiesen[1]
[1]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 ...

Exergy Analysis of Polymer Flooding in Clastic Reservoirs

A. Hassan [1], H. Bruining [2], T. Musa [3], R. Farajzadeh [2],
[1] Delft University of Technology, Delft, The Netherlands, and Sudan University of Science and Technology, Khartoum, Sudan
[2] Delft University of Technology, Delft, The Netherlands
[3] Sudan University of Science and Technology, Khartoum, Sudan

Using a 1-D model of polymer displacement, we analyze the exergy (maximum attainable work) balance of viscosifi ed water, e.g. with Arabic gum. The 1-D model shows the principle how such an analysis can be done. A comparison as to the displacement efficiency is made between three scenarios, i.e., (1) pure water injection, (2) constant polymer viscosifi ed water injection and (3) polymer slug ...

Large Scale Outdoor Flammable & Toxic Gas Dispersion Modelling in Industrial Environments

A. Hallgarth[1], A. Zayer[1], A. Gatward[2], and J. Davies[2]

[1]Hazard Research & Risk Consultants Ltd, Aberystwyth, Wales, United Kingdom
[2]Independent Consultants, United Kingdom

HazRes has developed a gas discharge and dispersion model in COMSOL which takes into account the effects of localized wind profiles and turbulence generated by buildings, structures and terrain on the dispersion of gases in question. The main focus of this work is to develop and provide clients with more accurate prediction methods relative to industrial standard software tools in modeling ...

Miscible Viscous Fingering of Pushed Versus Pulled Interface

S. Pramanik[1], M. Mishra[1]
[1]Indian Institute of Technology Ropar, Rupnagar, Punjab, India

Viscous fingering (VF) instability has been extensively studied over past several decades in the context of various industrial, environmental and chemical processes. We try to model miscible VF at pushed or pulled interfaces using COMSOL Multiphysics®. We study the effect of the positive and negative log-mobility ratio on the fingering instability. Numerical simulation has been performed in 2D ...

Design and Analysis of Fluid Structure Interaction for Elbow Shaped Micro Piping System - new

V. S. P. Rajesh[1]
[1]St. Mary's Group of Institutions, Jawaharlal Nehru Technological University, Hyderabad, Telangana, India

Fluid and structure Interaction analysis can be applied to versatile fields of engineering applications, helps in understanding the affects of one material on other, thereby reducing the effect of physical parameters like nonlinear response, vibration in flow channel etc. Rapid development of technology led to the application of this Fluid-Structure Interaction (FSI) in Microfluidics based ...

A Model of Heat Transfer in Metal Foaming

Bruno Chinè [1], Valerio Mussi [2], Michele Monno [3], Andrea Rossi [2],
[1] School of Materials Science and Engineering, Costa Rica Institute of Technology, Cartago, Costa Rica
[2] Macchine Utensili e Sistemi di Produzione, Piacenza, Italy
[3] Dipartimento di Meccanica, Politecnico di Milano, Milano, Italy

Metal foams are interesting materials with many potential applications. Foamed metals or alloys include gas voids in the material structure and therefore the density is introduced as a new variable, with the real possibility to modify ad hoc their physical properties. In the indirect foaming process carried out in a furnace, simultaneous mass, momentum and energy transfer between three phases, ...

Simplified CFD Modeling of Air Pollution Reduction by Means of Greenery in Urban Canyons

S. Lazzari [1], K. Perini [1], E. R. di Schio [2], E. Roccotiello [3],
[1] University of Genova, Dept. of Sciences for Architecture, Genova, Italy
[2] University of Bologna, Dept. of Industrial Engineering, Bologna, Italy
[3] University of Genova, Dept. of Sciences of Earth, Environment and Life, Genova, Italy

As known, air quality in urban areas is dramatically affected in particular by the noteworthy presence of respirable suspended particulate matter (such as PM2.5), nitrogen oxides (NOx), carbon monoxide (CO) and hydrocarbons (HC), which are mainly due to traffic-induced emissions. On the other hand, it is also known that vegetation can help restoring the environmental quality of dense urban areas ...

Flow and Mixing in the Liquid between Bubbles

B. Finlayson[1]
[1]Department of Chemical Engineering, University of Washington, Seattle, Washington, USA

Mixing is characterized in liquids moving between bubbles when the bubbles are moving down a microfluidic channel. The shape is assumed based on fluid mechanical arguments and experimental observations, and the mixing is characterized for a variety of situations in two and three-dimensions. In COMSOL Multiphysics, an integration coupling variable was used by solving the problem in two dimensions ...

On The Purification Of Waste Waters Using Multi-Bore Filters: Simulation Of A Long-Term Filtration Stage

I. Borsi
Dipartimento di Matematica U. Dini, Universita' di Firenze, Italy

We present the progress of the simulation activity we are carrying out within the PURIFAST LIFE+ project. We first present the model we formulated to describe the macroscopic effects of the filtration process taking place in a multi-bore filter, focusing on the fouling phenomenon. In membrane-based filters the fouling phenomenon is the major reason of a decreasing filtration efficiency. ...

Calibration of MHD Flow Meter using COMSOL Multiphysics

S. Sahu[1], R. P .Bhattachryay[1], E. R. Kumar[1]
[1]Institute for Plasma Research, Bhat, Gandhinagar, Gujarat, India.

There is limited option for non-intrusive flow measurement of liquid metals at high temperature. Liquid metal flowing in a conduit along with the transverse magnetic field induces emf in the liquid metal. The emf developed; which has linear dependency on flow velocity; can be used for flow velocity estimation. In case of conducting conduit the emf can be measured at the conduit wall. The main ...