郝帅翔 , 蒋帆 ,
利用高压电容器对单匝线圈放电是产生脉冲强磁场的技术之一，其电路模型简单，可以等效成RLC串联电路，但过程复杂，涉及电磁学、力学、热学、等离子体科学等众多学科。本文分析了其具体过程，并利用 COMSOL Multiphysics® 仿真平台进行了模拟，建立了二维和三维单匝线圈模型，重点研究了线圈的动态特性对磁场分布的影响，并对比了其结果和模型准确性；然后，讨论了线圈的尺寸和所产生磁场的关系；最后通过实验验证了仿真模型的准确性，为今后的相关科学研究奠定了基础。
F. Wittbrach, A. Weddemann, A. Auge, and A. Hütten
Department of Physics, Bielefeld University, Germany
It is possible to control the motion of magnetic beads using a combination of hydrodynamic and electromagnetic forces. In this work, we investigate the possibility to manipulate the motion of beads with different magnetic moments in a special microfluidic structure so as to separate them. We also experimentally prove that this structure is a suitable device to separate beads and show that the ...
Hemodynamic Therapy of Middle Cerebral Artery Vasospasm Guided by a Multiphase Model of Oxygen Transport
S. Conrad[1,2], P. Chittiboina, and B. Guthikonda
Department of Bioinformatics and Computational Biology, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Department of Biomedical Engineering, Louisiana Tech University, Ruston, LA, USA
Department of Neurosurgery, Louisiana State University Health Sciences Center, Shreveport, LA, USA
Cerebral vasospasm is a complication of subarachnoid hemorrhage and other neurosurgical emergencies that reduce blood flow to the brain. Part of the approach to management of vasospasm is to improve flow through the stenotic areas by reducing by decreasing blood viscosity and enhancing flow through the stenosis. To examine the interaction of these factors, we applied computational fluid ...
Development of an Interlinked Curriculum Component Module for Microchemical Process Systems Components Using COMSOL Multiphysics
A. Mokal, and P. Mills
Department of Chemical and Natural Gas Engineering, Texas A&M University, Kingsville, TX, USA
COMSOL Multiphysics provides a powerful numerical platform where various models for microchemical process technology components can be readily created for both education and research. This modeling tool allows chemical engineering students to focus on understanding the effects of various microchemical system component design and operational parameters versus coding and debugging of the numerical ...
S. Nelson, and M. Guvench
University of Southern Maine, Gorham, Maine, USA
COMSOL Multiphysics is employed to model, simulate and predict the performance of a high Q, in-plane rotational resonating MEMS sensor. The resonating sensor disk is driven by thermal expansion and contraction of the support tethers due to AC joule heating. The resonant frequency is sensed by stationary contacts. For cost reduction, the relatively simple, low cost SOIMUMPS fabrication process is ...
Image-Based Simulation of Electrical Impedance Techniques Applied on the Human Thorax for Cardio-Pulmonary Applications
F.K. Hermans, R.M. Heethaar, R.T. Cotton, and A. Harkara
VU University Medical Center, Amsterdam, The Netherlands
Simpleware Ltd., Exeter, United Kingdom
For medical diagnostic purposes there is an increasing need for non- (or minimal) invasive techniques to measure all kinds of parameters that can provide insight in the functioning of cells, organs or organ systems. Currently, Impedance Cardiography (ICG) is used for measurements of the heart and Electric Impedance Tomography (EIT) is used for investigating lung tissue condition. This paper ...
J. Hrdlicka, P. Cervenka, M. Pribyl, and D. Snita
Department of Chemical Engineering, Institute of Chemical Technology Prague, Prague, Czech Republic
In this paper we present results of the mathematical modeling of AC electroosmotic micropumps. Unlike others we use the full dynamic description, instead of the linearized model. Skewed hybrid discretization meshes are employed in order to accurately capture the main features of the studied system. Also, we introduce zig-zag electrode arrangements for traveling-wave electroosmotic micropumps. ...
V. Romero-García, A. Krynkin, J.V. Sánchez-Pérez, S. Castiñeira-Ibáñez, and L.M. Garcia-Raffi
Centro de Tecnologías Físicas Acústica, Universidad Politécnica de Valencia, Valencia, Spain
School of Computing, Science & Engineering, University of Salford, Salford, United Kingdom
Depto. Física Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
Instituto Universitario de Matemática Pura y Aplicada, Universidad Politécnica de Valencia, Valencia, Spain
The elastic and geometrical properties of Low Density Polyethylene (LDPE) foam are used in this paper to improve the attenuation properties of periodic arrangements of acoustic scatterers known as Sonic Crystals (SCs). A specific recycled profile of LDPE foam is used as elastic-acoustic scatterer. The acoustic spectrum of the single scatterer shows two attenuation peaks in the low frequency ...
Filip Van den Abeele
Simulation Expert, OCAS, Belgium
OCAS is a joint venture between ArcelorMittal and the Flemish Region. She uses COMSOL Multiphysics for the following: Enamel solidification Magnetic Pulse Forming Electromagnetic modelling of electric machines Vortex Induced Vibrations Model Identification for Orthotropic Materials and much more ---------------------------------- Keynote speaker's biography:Filip Van den Abeele has a ...
Application of System Identification Methods to Implement COMSOL Models into External Simulation Environments
A.W.M. van Schijndel and M. Gontikaki
Eindhoven University of Technology, Eindhoven, The Netherlands
Full coupling of distributed parameter models, like COMSOL, with the lumped models often lead to very time-consuming simulation duration times. In order to improve the speed of the simulations, the idea of using system identification methods to implement the distributed parameters models of COMSOL into external simulation environments, is explored. It is concluded that the system identification ...