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.

Toward Energy Zero Building: A COMSOL Multiphysics® Model of Building and its HVAC System - new

F. Bruno[1]
[1]ENERSPACE Srl, Genoa, Italy

A model built with COMSOL Multiphysics® to exploit meteorological forecasts and instant outdoor meteorological data (temperature, solar radiation, moisture, wind speed and direcition, etc.) together with indoor ambient data (air temperature, radiant temperature of enclosures, etc), building parameters (mass, orientation, surface, structural composition, etc.) and historical consumption of ...

Heat Transfer and Working Temperature Field of a Photovoltaic Panel under Realistic Environmental Conditions - new

E. Ruiz-Reina[1], M. Sidrach-de-Cardona[1], M. Piliougine[1]
[1]University of Málaga, Málaga, Spain

The aim of this work is the numerical study, by finite element analysis using COMSOL Multiphysics®, of the heat transfer and working temperature field of a photovoltaic panel under realistic wind and irradiation conditions. It is well-known that a great portion of the solar radiation absorbed by a photovoltaic module (typically 85% of the incident radiation) is not converted into electrical ...

Optimization of Architectured Structures in Building for Harness, Storage, and Release of Energy - new

C. Thoumyre[1], P. Lhuissier[1], L. Salvo[1], G. Bienvenu[2], M. Kermarrec[2]
[1]University Grenoble Alpes, SIMaP, Grenoble, France
[2]Hevatech, Ville-la-Grand, France

The problem of storage, and release of thermal energy is an important challenge in various industrial fields. Several systems for thermal energy storage exist like phase change materials (PCM) and thermochemical storage [1]. The first system usually addresses short term storage (day duration) while thermochemical storage are very interesting for longer duration (seasonal storage). However, ...

Using COMSOL Multiphysics to Model Crust Development at the Surface of Whole Beef Meat Subjected to Hot Air Jet

J. Sicard [1], S. Portanguen [1], C. Chevarin [1], A. Kondjoyan [1]
[1] INRA Auvergne-Rhône-Alpes, Saint-Genès-Champanelle, FRANCE

Crust which develops at the surface of meat leads to reactions which affect food color, flavor and safety. Whole pieces of meat are only contaminated by microorganisms at their surface. Thus intense thermal treatment can inactivate pathogenic bacteria; however the associated high temperatures also lead to the formation of carcinogenic compounds. An experimental study of crust development at ...

Solid Target Cooling for High Power Neutrino Super Beam

B. Lepers, and C. Bobeth
IPHC, CNRS, Strasbourg, France

The feasibility of water cooling is investigated for a solid target which is integrated as the inner conductor in a magnetic horn for secondary particle focusing (pi; K) as used in conventional neutrino beam accelerator experiment. A simple axi-symmetric thermal model calculated in COMSOL is used to obtain the temperature distribution inside the target for different values of h; power beam and ...

Seasonal Thermal Performance of Geothermal Piles

D. Testi[1], P. Conti[1]
[1]University of Pisa, Department of Energy and Systems Engineering, Pisa, Italy

The use of foundation piles as ground heat exchangers coupled to a geothermal heat pump is considered of interest for possible savings in installation costs, compared to conventional borehole heat exchangers. We refer to them as “geothermal piles” or “energy piles”. The main purpose of the foundation structure is to transmit the load of the building to the lower layers of the soil, best suited ...

Design, Simulation, and Fabrication of Thermal Angular Accelerometers

H. Alrowais [1],
[1] School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA

This abstract introduces a sensor design for detecting angular acceleration in a single plane using thermal convection. The working principal of the device is based on probing temperature profile changes along a micro-torus caused by angular acceleration. By properly choosing the locations of the heaters as well as the temperature sensors, the output signal will correlate to in-plane angular ...

COMSOL Multiphysics® as a Tool to Increase Safety in the Handling of Acetylene Cylinders Involved in Fires

F. Ferrero[1], M. Beckmann-Kluge[1], and K. Holtappels[1]

[1]BAM Federal Institute for Materials Research and Testing Division II.1 “Gases, Gas Plants”, Berlin, Germany

In this paper a mathematical model for predicting the heating-up of an acetylene cylinder involved in a fire is presented. In the simulations polynomial functions were used to describe the temperature dependency of the thermal properties of the cylinder interior, which is a complex system composed by a solid porous material, a solvent and acetylene dissolved in it. Model equations covered heat ...

Heat and Mass Transfer Modeling During Freezing of Foodstuffs

O. Rouaud[1], T. Pham[2]
[1]LUNAM Université, ONIRIS, CNRS, GEPEA, UMR, Nantes, France
[2]University of New South Wales, Sydney, Australia

A mathematical model is developed to determine the weight loss and the freezing rate during the freezing of unwrapped foodstuffs. The model allows comparing two freezing processes; the first uses nitrogen gas at -80°C and the second uses cold air. The model includes thermophysical properties that are temperature dependent to take into account the ice formation. The time step has to be chosen ...

Simulation of Radiation Dose Response in Phantom for CT

H. Chen-Mayer[1], R.E. Tosh[1]
[1]National Institute of Standards and Technology, Gaithersburg, MD, USA

The radiation dose produced by an x-ray CT scanner to the patient is conventionally referenced to measurements performed by an ionization chamber in a phantom. On a fundamental level, the radiation absorbed dose, J/kg, can be determined directly by the temperature rise in the absorbing material. We model the temperature response in a high density polyethylene (HDPE) phantom. Use of ...