Here you will find presentations given at COMSOL Conferences around the globe. The presentations explore the innovative research and products designed by your peers using COMSOL Multiphysics. Research topics span a wide array of industries and application areas, including the electrical, mechanical, fluid, and chemical disciplines. Use the Quick Search to find presentations pertaining to your application area.

Finite Element Modeling for Inspection of CANDU® Steam Generators - new

S. G. Mokros[1], P. R. Underhill[2], J. Morelli[1], T. W. Krause[2]
[1]Department of Physics, Engineering Physics & Astronomy, Queen's University, Kingston, ON, Canada
[2]Department of Physics, Royal Military College of Canada, Kingston, ON, Canada

Steam generators (SGs) are used in CANDU® nuclear reactors as heat exchangers to convert water into steam using heat generated in the reactor core. Ferrous trefoil broach support structures prevent excessive vibration of thousands of SG tubes. A probe that uses pulsed eddy current (PEC) technology has been designed for inspection of support structures, from within SG tubes, to detect and ...

Extraction of Thermal Characteristics of Surrounding Geological Layers of a Geothermal Heat Exchanger by COMSOL Multiphysics® Simulations - new

N. Aranzabal[1], J. Martos[1], J. Soret[1], J. Torres[1], R. García-Olcina[1], Á. Montero[2]
[1]Technical School of Engineering, University of Valencia, Valencia, Spain
[2]Department of Applied Physics, Politechnical University of Valencia, Valencia, Spain

It has been demonstrated that is possible obtain the thermal parameters of geological layers of a BHE (Borehole Heat Exchanger) by fitting temperature evolution in an observer pipe inserted into borehole.

Design of a Cylindrical Photobioreactor with Central Orifice for the Production of Microalgae - new

N. N. V. Ramirez[1], L. M. Raymundo[1], J. O. Trierweiler[1]
[1]Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil

It is desired to design a photobioreactor for the production of voluminous samples of microalgae for lipid quantification. The reactor should provide good growing conditions even with periodic withdrawal of samples. It also should be compact for better use of laboratory space. Therefore, a photobioreactor with concentric tubes was modeled to verify the circulation of the culture medium. The ...

Preliminary Design of the New HI-LUMI LHC Beam Screen

M. Morrone [1],
[1] CERN, Geneva, Switzerland

The high luminosity large hadron collider (HL-LHC) project aims at increasing the integrated luminosity by a factor of 10 from its original value (from 300 to 3000 fb-1) leading to the potential extension of scientific discoveries. To attain this goal, important upgrades will take place in the LHC by 2024 including the installation of new superconducting magnets in which new beam screens will be ...

Study on Air Tubes Failure in Sponge Iron Rotary Kiln

Ankit [1], T. K. Kundu [1], R. P. Kumar [2],
[1] Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
[2]HSBC India(Formerly with IIT Kharagpur) , Bangalore , India

The rotary kiln process is a commonly practiced method in the industry for producing sponge iron using coal. In the industry, there have been recent reports of premature failures of certain air tubes in a rotary kiln. Most of those cases have concentrated on those air tubes which run into the kiln around the middle portion of the kiln. This research work aims at identifying the probable cause of ...

Creep Deformation Behavior of Heating Filaments in High Temperature Applications

B. Valentini [1],
[1] Plansee SE, Reutte, Austria

Resistive heating filaments used in high temperature applications at 2000°C and above are often made of refractory metals. The lifetime of such filaments is mainly limited by creep deformations which can in the worst case lead to a short circuit between filaments and other furnace components. With the aid of COMSOL Multiphysics software, the time-dependent creep deformation behavior of a heater ...

Simulation of an AlN Thin Film Resonator for High Sensitivity Mass Sensors

M. Maitra [1], H. B. Nemade [1], S. Kundu [1],
[1] Indian Institute of Technology Guwahati, Guwahati, Assam, India

The objective of this paper is to show the simulation of a piezoelectric thin film device and its application as a sensor. Piezoelectric aluminum nitride thin film clamped at two ends is simulated using COMSOL Multiphysics software. The device consists of the piezoelectric thin film suspended on a cavity etched on a silicon substrate. Two metal electrodes are placed at the two fixed sides of the ...

Thermal Analysis of Dry Type Power Transformer under Effect of Linear and Nonlinear Loads

R. G. Mafra [1],
[1] Universidade Federal de Itajubá, Itajubá, MG, Brazil

The thermal performance of the dry type power transformers is directly connected to the internal heat source caused by electrical losses. Thus, it is necessary to evaluate the temperatures reached by the transformer core to ensure optimum operation. This paper presents a detailed experimental and numerical study of the heating of a 5 Kva three-phase power transformer operating with linear and ...

A 3D Thermal Model for Lunar Surface Using COMSOL Multiphysics® Software: Validation and Results

K. Durga Prasad [1], S.V.S. Murty [1], V. K. Rai [1],
[1] Planetary Sciences Division, Physical Research Laboratory, Ahmedabad, Gujarat, India

A comprehensive three dimensional finite element thermal model has been developed using COMSOL Multiphysics® software to understand the thermo-physical behaviour of the uppermost regolith layer of the moon. The model can simulate variable layers, layer thickness and dimensions and can account for complex geometry, different size, irregular meshing, parametric based variation in physics and ...

带螺旋翅片的绕管负压换热器

王坤祥 [1],
[1] 中国科学院理化技术研究所,北京,中国

引言:超流氦低温系统的正常运行离不开负压换热器,在此选用绕管式的负压换热器。其工况为4.45K~2K之间,低压侧绝对压力3000Pa左右。软件中用到的模块有Livelink for Solidworks、Livelink for Excel、“非等温湍流 k-ε”接口。 结果:求解结果定性上正确,问题在于为了让换热器达到理想换热效果,需要更多匝数的绕管,对计算机要求很大,在该模型中只保留了10匝。