Consultez les proceedings de la Conference COMSOL 2024
Hydrogen has great potential to be the fuel of the future through utilization in fuel cells, but it is rarely found naturally and must be produced in energy-intensive processes. Steam reforming, the process of heating natural gas and steam in the presence of a catalyst to drive a ... En savoir plus
A comprehensive mathematical model that includes mass and heat transfer was developed for the transport of gas mixture of carbon dioxide and methane through hollow fiber membrane (HFM) contactor. COMSOL Multiphysics® was used in solving the set of partial, ordinary and algebraic ... En savoir plus
This work examined in detail the a priori prediction of the axial dispersion coefficient from available correlations versus obtaining it and also mass transfer information from experimental breakthrough data and the consequences that may arise when doing so based on using a 1-D axially ... En savoir plus
Iouri Balachov is a Senior Scientist at SRI International (Menlo Park, CA) where he is leading development of Direct Carbon Fuel Cell technology for clean and efficient power generation from coal, biomass, and a wide variety of carbon containing fuels. Prior to SRI he was an engineer at ... En savoir plus
Renewable energies generate temporary mismatches between energy demand and supply. The conversion of surplus energy to hydrogen and its storage in geological formations is one option to balance this energy gap. Storage in deep saline aquifers is the most cost-effective option for ... En savoir plus
Aluminum alloys in near-neutral, mildly aggressive solutions, undergo damage accumulation during corrosion, mostly due to the presence of micrometer-sized constituent intermetallic particles (IMP) that create a microstructural discontinuity at which localized corrosion occurs. The ... En savoir plus
Because of the complex nature of geomaterials and presence of solid and fluid within a single system, it is crucial to consider all the physics involved within the geomaterial system. A fully coupled thermo-hydromechanical model is developed. The model consists of a three-phase flow ... En savoir plus
焊接接头是管线工程的薄弱环节，制约着油气田的发展。传统的电化学方法在表征由焊缝、热影响区和母材等不同部分组成的、具有多界面、高度不均匀分布的电化学反应过程时存在一定的困难和局限性，导致焊接接头局部腐蚀演化过程的电化学机制目前仍不十分清楚。利用 COMSOL Multiphysics® 多物理场仿真软件的“腐蚀，二次电流”接口对不同焊缝宽度的模拟 X80 钢SMAW焊接接头在 CO2 饱和的 NACE 溶液中的电位及电流密度分布进行了仿真。结果表明，在本文研究条件下，模拟的 X80 钢 SMAW 焊接接头的焊缝和粗晶区作为腐蚀电偶对的主要阳极，腐蚀加速 ... En savoir plus
Pre-existing oil and gas wells and well bores represent highly permeable pathways for leakage of greenhouse gases; in Alberta alone leaks have been estimated to provide the equivalent of 3.5 million tonnes of CO2 per annum. In addition to abandoned wells without plugs, gas leakage may ... En savoir plus
An analysis to quantify the flow inside the narrow channels of an ISS (International Space Station) CDRA (Carbon Dioxide Removal Assembly) adsorbent bed is presented. The CDRA contains two pelletized adsorbent beds to remove CO2 respired by the crew. Heaters and associated fins inside ... En savoir plus