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.

An Approach to Modeling Vacuum Desorption - new

C. F. Gomez[1], R. Schunk[1], R. F. Coker[1], J. Knox[1]
[1]NASA Marshall Space Flight Center, Huntsville, AL, USA

The objective of this simulation effort is to develop a mathematical model of vacuum desorption on a POC (Proof of Concept) canister loaded with Zeolite 13X/5A . This canister contains a pelletized adsorption bed which is used to adsorb H2O and CO2. Once this bed is fully saturated with an equilibrium loading, desorption is then accomplished by reducing the pressure to near vacuum. This type of ...

Parameter Estimation of Anisotropic Diffusion in Clay with COMSOL Multiphysics® - new

R. Gerasch[1], J. Kulenkampff[1], J. Lippmann-Pipke[1]
[1]Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Research Site Leipzig, Leipzig, Germany

Our GeoPET camera is explicitly dedicated for and well capable of 4D monitoring of solute transport in dense geological material, c = c(x,y,z,t) [1-4]. We apply COMSOL Multiphysics® for reproducing our experiments and extracting parameter sets for our 4D problems [5-6]. By aligning simulated results of anisotropic diffusion in clay to our observations we are able to clearly differentiate and ...

Elastoplastic Modeling and Experimental Verification of Solder-Substrate Interaction - new

C. Karl[1], C. Slater[1], M. Strangwood[1], K. Tank[2], S. O'Connor[2]
[1]University of Birmingham, Birmingham, UK
[2]Strip Tinning Ltd, Birmingham, UK

Solders are typically used to join similar or dissimilar metals, referred to as substrates. In some cases solders are also used to join completely different classes of materials. For example, a joint between copper busbar and silicon solar cell represents a set of dissimilar substrates. In the formation of a solder-substrate couple, the system must have been subjected to at least a single ...

稳态磁场对激光熔凝熔池的抑制作用研究 - new

王梁[1], 胡勇[1]
[1]浙江工业大学,杭州,浙江,中国

激光熔凝通常被作为材料表面的最终处理工艺,然而激光熔凝处理后,材料表面容易出现高低起伏的波纹,降低了其表面质量。因此,为了在激光熔凝处理后获得平整的表面,同时降低后续机加工所需的成本和时间,本文提出了利用稳态磁场抑制激光所致熔池运动的方法。以固液相变统一模型为基础,建立了考虑热传导、流体运动、相变及电磁场作用的多物理场耦合2D瞬态仿真模型,将洛仑兹力以体积力形式添加到动量方程源项中,并利用移动网格(ALE)的方法在模型中计算了熔池表面的运动形态。通过该模型计算了由稳态磁场引起的熔池中的洛伦兹力与由表面张力引起的Marangoni对流影响熔池表面形貌的相互影响过程以及不同磁场强度下熔池速度场、温度场分布情况。同时,包含激光功率、扫描速度、表面张力温度系数等相关材料属性和工艺参数对熔池表面形貌的影响也进行了仿真分析。通过激光熔凝后试样表面的实际高度扫面图像结果以及温度对比图 ...

Computational Multiphysics to Optimize Humidification Chamber for a Novel PEM Fuel Cell Power System Used in Automobile Application - new

M. Raja[1]
[1]Tata Motors, Bengaluru, Karnataka, India

Proton Exchange Membrane (PEM) fuel cells are quickly becoming an attractive technology due to their ability to meet increasing energy demands in a cleaner, more efficient way compared to existing methods. A fuel cell is an electrochemical device which converts the chemical energy of a fuel and an oxidant directly into electricity without the intermediate step of classical, chemical combustion ...

Iberian COMSOL Multiphysics Conference

The Organizing Committee of the Iberian COMSOL Multiphysics Conference 2014

In the conference we bring together a community that is scientifically diverse in an event about the use of COMSOL Multiphysics. Oral and poster presentations highlight achievements in multiphysics modeling and simulations using COMSOL.

New Thermo-Mechanical Fluid Flow Modeling of Multiscale Deformations in the Levant Basin

M. Belferman [1], R. Katsman [1], A. Agnon [2], Z. Ben-Avraham [1],
[1] The Dr. Moses Strauss Department of Marine Geosciences, Leon H.Charney School of marine sciences. Haifa University, Mt. Carmel, Haifa, Israel
[2] Institute of Earth Sciences, The Hebrew University, Jerusalem, Israel

The Levant has been repeatedly devastated by numerous earthquakes since prehistorical times. In order to understand the role of the dynamics of the water bodies in triggering the deformations in the Levant basin, a new theoretical thermo-mechanical model is constructed and extended by including a fluid flow component, in COMSOL Multiphysics simulation environment. The latter is modeled on a ...

Large Ray Optics Simulations for the Prediction of Solar Radiation Concentration Due to Reflective Walls

H. Rouch [1],
[1] INOPRO IAO, Villard-de-Lans, France

Abstract: Some of recent and unconventional buildings are using reflective material for their walls. In case of curved walls, like in the Vdara Hotel tutorial, or of complex shape walls like in the present case, the risk of solar radiation concentration is difficult to predict. Such concentration may damage the impinged material. Then it has to be studied by simulation. The presented case ...

Research and Development of Multiphysics Models in Support of the Conversion of the High Flux Isotope Reactor to Low Enriched Uranium Fuel

The findings presented in this report are results of a five-year effort led by the Research Reactors Division (RRD) of the Oak Ridge National Laboratory (ORNL), which is focused on research and development toward the conversion of the High Flux Isotope Reactor (HFIR) fuel from high-enriched uranium (HEU) to low-enriched uranium (LEU). This report focuses on the tasks accomplished by the ...

Fluid Flow During Descemet Membrane Detachment

L. Y. Jiann [1]
[1] Universiti Teknologi Malaysia (UTM), Malaysia

Descemet membrane detachment (DMD) happen when the aqueous humour (AH) in the aqueous chamber flow into the descrement membrance (DM) space through a break and separate the membrane from the stroma. This often happen after the cataract surgery. The fluid is driven by the buoyancy force that generated by to the existing of temperature different between the cornea and the pupil. COMSOL ...

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