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。
Determination of NFC-Antenna Operating Distance by COMSOL Multiphysics® Simulation of Planar Transformer Modeling
A. K. Palit ,
 ZF-Lemförder Electronic GmbH, Espelkamp, Germany
Although the Near Field Communication (NFC) concept has been developed for the short distance communication between the NFC-reader antenna and transponder/Tag, yet the requirements of different Automotive OEMs vary drastically. For instance, for the keyless entry into the car based on capacitive type sensor in door handle project which consists of a rectangular NFC-reader antenna of size 80mm x ...
S. Zahid , P. R. Hobson ,
 Brunel University London, London, United Kingdom
Vacuum phototriodes (VPT) have been used as photodetectors for many years in particle physics experiments. For example, they were used in the OPAL experiment at LEP and are currently used in the endcap Electromagnetic Calorimeter of the CMS experiment, at CERN’s Large Hadron Collider. Existing VPTs are fast, low-gain devices that are able to operate in strong magnetic fields at angles up to ...
A. X. Lalas , N. V. Kantartzis , T. T. Zygiridis , T. P. Theodoulidis ,
 Information Technologies Institute, Centre of Research & Technology - Hellas, 6th km Harilaou - Thermi, Thessaloniki, Greece
 Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
 Department of Informatics and Telecommunications Engineering, University of Western Macedonia, Kozani, Greece
 Department of Mechanical Engineering, University of Western Macedonia, Kozani, Greece
The advent of wireless power transfer (WPT) technology has offered a gradually evolving research field with a multitude of triggering applications, like electric vehicles, bio-medical implants and wireless charging media for consumer electronics. However, since the initial establishment of its principal characteristics, instructive WPT efficiencies have been implemented only for rather small ...
E. Holzbecher , A. Hadidi ,
 German University of Technology in Oman, Muscat, Oman
Flash floods are sudden and mostly destructive rushes of water down narrow gullies or over sloping surfaces. They are mostly caused by heavy rainfall in the upstream watershed. They may also appear as result of catastrophic events as dam or levee breaks, or mudslides or debris flow. The occurrence of flash floods is determined by many factors, like intensity, location and distribution of the ...
Y. Xing , R. Hu , Q. Liu ,
 Geoscience Centre, University of Goettingen, Goettingen, Germany
 School of Earth Science and Engineering, Hohai University, Nanjing, China
Deformation prediction is an important part of the structure stability analysis. However, the deformation of bank protection structure which is affected by many factors, such as structural stiffness, earth pressure and hydrostatic pressure. It contains a complex mechanical process, which is a grey, fuzzy, stochastic and nonlinear engineering problem. Neural network method as one of nonlinear ...
A. Nowicki , A. Bennecer ,
 Mechanical Engineering, University of Northampton & Gdańsk University of Technology, Gdańsk, Poland
 Engineering, University of Northampton, Northampton, United Kingdom
A Microbolometer is a specific type of uncooled infrared radiation detector used in thermal cameras, which converts the incoming energy into a proportionate electrical signal, which is then amplified, processed and displayed, typically on the thermal camera’s LCD viewer. The main principle of operation of a microbolometer is a thermally sensitive layer which is exposed to incident ...
M. Suárez , and F. Samaniego 
Faculty of Sciences, Michoacán University (UMSNH), Morelia, Michoacan, Mexico
Faculty of Engineering Postgrade Studies Division, National University of Mexico (UNAM), Mexico City, Mexico
New geothermal energy sources hold promise for the future. Deep submarine geothermal energy related to hydrothermal vents is emerging in many places along the oceanic spreading centers. Shallow submarine geothermal systems are found near to continental platforms. We present the initial development of mathematical models to simulate the energy transport in submarine systems. A model for the ...
Massachusetts Institute of Technology, Cambridge, MA, USA
Markus Zahn received all his education at MIT, was a professor in the Department of Electrical Engineering at the University of Florida, Gainesville from 1970-1980, and then joined the MIT Department of Electrical Engineering and Computer Science faculty in 1980. He works in the Laboratory for Eelectromagnetic and Eelectronic Systems, in the MIT High Voltage Research Laboratory, is the Director ...
E. Zanchini, and T. Terlizzese
Dipartimento di Ingegneria Energetica, Nucleare e del Controllo Ambientale, Università di Bologna, Bologna, Italy
The results of two thermal response tests recently performed on two vertical borehole heat exchangers (BHEs) are presented. The BHEs have the same cross section and a depth of 100 m and 120 m respectively. The evaluation of the thermal properties of the ground and grout are performed by a finite-element simulation method, developed through the software package COMSOL Multiphysics 3.4.