Coupling Heat Transfer in Heat Pipe Arrays with Subsurface Porous Media Flow for Long Time Predictions of Solar Rechargeable Geothermal Systems
P. Oberdorfer, R. Hu, M. Azizur Rahman, E. Holzbecher, M. Sauter, P. Pärisch
Applied Geology, Geoscience Centre, University of Göttingen, Göttingen, Germany
Institute for Solar Energy Research Hameln/Emmerthal (ISFH), Emmerthal, Germany
An increased share of renewable energies is regarded as an integral part of a strategy towards a sustainable future. With regard to the heat supply sector this may be achieved using solar thermal collectors or heat pump systems with borehole heat exchangers. During the last years solar thermal and geothermal systems have generally been installed separately. Now, several proposals are discussed ...
J. Font-Capó, A. Nardi, M. Mendoza , E. Ruiz, S. Jordana, J. Molinero, P. Trinchero, J. Vargas
Amphos 21 Consulting, Barcelona, Spain
Amphos 21 Perú, Lima, Perú
Worley Parson/TWP, Lima, Perú
Some of the present metallic ores mines are located in areas formed by a heterogeneous fractured massif where groundwater flows preferentially through fractures. Underground mining in these zones can cause impacts in streams, lakes and change the natural water balance of the watersheds, leading to conflicts between traditional uses of water and the mining activity. Quantification of these ...
A. Egedy, B. Molnar, T. Varga, T. Chován
Department of Process Engineering, University of Pannonia, Veszprém, Hungary
The primary aim of using jet as mixer, like in case of other mixing devices, is to increase the heat and mass transfer between the phases. Beside the injection position the geometry of the jet mixer and the injection nozzle has a major effect on the injection. In our study COMSOL Multiphysics software was used to carry out the experimental and simulation of the different jet geometries. The jet ...
A. A. Roy, V. Bojarevics, and K. Pericleous
University of Greenwich
The aim of this article is to demonstrate the capability of the software for predicting free-surface motion and internal fluid flow in an electromagnetically levitated sample of liquid metal. Multiphysics solutions which demonstrate the usefulness of Comsol as a powerful MHD simulation tool have been generated to two industrial problems using the ALE moving-mesh module in combination with the ...
Eswaran M, P. Goyal, Anu Dutta, G.R. Reddy, R. K. Singh , K.K. Vaze
Bhabha Atomic Research Centre, Mumbai, India
A 2-D unsteady viscous flow around two cylinders is studied by numerical solutions of the unsteady Navier-Stokes equations with a finite element formulation using COMSOL Multiphysics®. The results of a numerical investigation of the Strouhal frequencies of two identical, stationary, parallel circular cylinders arranged in staggered configurations is presented in this paper. A simple two cylinder ...
K.Revathy, S. Agarwal, B. Muralidharan, G. Padmakumar, K. K. Rajan
Fast Reactor Technology Group, Indira Gandhi Centre for Atomic Research, Kalpakkam, India
Electro refining is one of the important step in the Pyro processing nuclear spent fuel with molten salt. The electro refiner is a process vessel consists of anode ,cathodes and stirrers and ultra –high pure argon gas is provided at the top for inert atmosphere and at the bottom a cadmium layer is provided. The vapor pressure of the cadmium is high at the operating temperature, the cadmium vapor ...
R. Kiflemariam, M. Almaz, F. Zevallos, C. Lin
Department of Mechanical & Materials Engineering, Florida International University, Miami, FL, USA
A 2D transient heat conduction model was created in COMSOL Multiphysics® software to study the performance of photovoltaic-thermal (PVT) water system. The model captures the variation of important environmental and system parameters such as outside temperature, solar irradiation, air velocity and temperature. The model has a good agreement with experimental data for the photovoltaic cell ...
I. Neitzel, R. C. F. do Nascimento, C. C. Bueno
Faculdade de Telêmaco Borba - FATEB, Telêmaco Borba, Paraná, Brasil
Neste trabalho é analisado o comportamento dos perfis de temperatura e umidade e sua penetração em bobinas de papel submetidas a longos períodos de armazenagem. O modelo considera a transferência simultânea de calor e massa com o efeito Soret, mas sem o efeito Latour. O sistema é fechado em relação à umidade e aberto em relação à energia. As propriedades térmicas são dependentes da umidade e ...
A. Dhall , T. Masiello , L. Butt , M. Strohmayer , M. Hemachandra , N. Tokranova , J. Castracane ,
 Colleges of Nanoscale Science and Engineering, SUNY Polytechnic Institute, Albany, NY, USA
Exposure to microgravity is known to alter genomic and proteomic expression and suppress immune cell activity. These changes may influence cancer development. Studying cancer cells in this environment, may help uncover novel therapeutic targets. SUNY Polytechnic Institute and SpacePharma, Inc. have teamed up to study the effect of microgravity on cancer cell migration. This will be achieved ...
刘孟杰 , 付芳芳 , 李萌 
动脉瘤破裂是引起蛛网膜下腔出血的一种主要原因。结合 COMSOL Multiphysics® 灵活的几何建模特性以及强大的流体仿真求解能力，本文分别对两组不同大小关系的 MCA 动脉瘤理论模型进行了仿真建模分析。通过模拟分析，获得了动脉瘤球囊体长度和宽度与动脉瘤基底宽度不同比例条件下的动脉瘤速度、压力、壁面切应力（WSS）等参数的变化规律，分析了几何形态与动力学参数之间的关系。模拟结果显示：1、宽颈动脉瘤，瘤体内部旋流强度较之窄颈动脉瘤更强，中心区流速更低，更有利于形成血栓而且顶点处压力更大，更易破裂。2、增大动脉瘤宽度与基底直径的比值，顶点处 WSS 呈非线性增长，但最大值低于 WSS 安全范围的下限值，破裂危险性依然很高；3、动脉瘤宽度与基底直径不同比例下的最大的 WSS 均是主要集中在动脉瘤与载瘤血管结合处（第一剪应力集中区），对血管壁生物组织力学特性影响严重；WSS ...