P. Venkateswaran, R. Minasamudram, P. Agrawal
Siemens Technology and Services Pvt. Ltd, Bangalore, Karnataka, India
Indian Institute of Technology - Bombay, Mumbai, Maharashtra, India
Lubricant oil is used to ensure proper functioning of industrial machinery such as turbines, gears, bearings and compressors. Oil analysis is used to detect and quantify the presence of wear metals and other contaminants in the lubricant of oil wetted systems, by sensing the change in relative permittivity of the oil as the wear metals pass through capacitor electrodes. Three configurations of ...
COMSOL Multiphysics® Software and PV: A Unified Platform for Numerical Simulation of Solar Cells and Modules
M. Nardone ,
 Bowling Green State University, Bowling Green, OH, USA
Introduction: Existing solar cell (photovoltaic, PV) device simulation software is either open source with limited capabilities (1D only) [1,2] or extremely expensive with obscure functionality . PV researchers need an accessible and versatile simulation tool to optimize existing technologies and to reduce the time from concept to prototype for new technologies. This work demonstrates how ...
P. Hanasi , B. G. Sheeparamatti , V. Abbigeri , N. Meti ,
 Visvesvaraya Technological University, Belagavi, Karnataka, India
Capacitor is mainly defined as two conducting plates that can hold the opposite charges on it. These plates can be used either as a sensor or an actuator. If the relative distance between the two conductors changes as result of given input, then capacitance values will change. This results in basic of capacitive or electrostatic sensing configuration. On the other hand, if a voltage or the ...
S. Meenatchisundaram, S. M. Kulkarni, S. Bhat
Department of Instrumentation and Control Engineering, Manipal Institute of Technology, Manipal, Karnataka, India.
Department of Mechanical Engineering, National Institute of Technology, Surathkal, Karnataka, India.
Piezoresistive pressure sensors have received much attention over the years because of low cost, simple measurement techniques, etc. There is a challenge in design with respect to appropriate positioning, shape and temperature compensation. Different models of piezoresistive pressure sensors are proposed to enhance its sensitivity in terms of output voltage. This paper aims in sensitivity ...
M. K. Nguyen, R. Haettel, A. Daneryd
KTH, Stockholm, Sweden
ABB Corporate Research,Västerås, Sweden
Induction motors, as any other industrial products, have to comply with various requirements on noise levels. Therefore, it is essential to use an appropriate prediction tool to verify and optimize the design of an induction motor with respect to the acoustic performances. The paper will focus on the prediction of the magnetic noise generated and radiated by a specific motor. The challenge is ...
M. Cobianchi , M. Rousseau , S. Xavier ,
 B&W Group Ltd., Worthing, West Sussex, United Kingdom
The main purpose of a drive unit is to transform the electrical signal at its terminals into acoustic waves via two transduction mechanisms: electro-mechanical and mechano-acoustical. In this paper only the electro-mechanical transformation is discussed in view of a future optimization of the main electrical parameters for a loudspeaker motor: the Force Factor (Bl) and the Blocked Impedance (Zb) ...
K. S. Shinoy , B. Sebastian ,
 Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala, India.
This paper presents the design and analysis of a high power radial flux Brushless DC motor for electro-mechanical actuation system. The motor is used for driving an electro-mechanical actuator of 20 ton capacity. Surface mounted, radially magnetized permanent magnet design is mostly preferred due to its ease of control, high efficiency and low maintenance. The motor under consideration is having ...
Y. Zheng, B. Xin
Donghua University, Shanghai, China
Shanghai University of Engineering Science, Shanghai, China
The electric field plays a very important role in the electrospinning process, which needs to be seriously considered in the electrospinning configuration developing. High voltage involved in electrospinning process leads to difficulty in measuring the electric field. Numerical simulation is used to design the electric field, and experiments are carried out to validate the spinneret and ...
S. Das, J. Li, R. Hui
University of Kansas, Lawrence, KS, USA
Kansas State University, Manhattan, KS, USA
The adoption of micro- and nanostructured electrodes is a promising technique to improve the performance of Li-ion battery, which increases the electrode surface area and improves the efficiency of ion exchange between the electrode and electrolyte. This performance improvement is supported by the results of our numerical simulation based of a Li+ battery in COMSOL Multiphysics® software. The ...
B. Baumann, J. Schwieger, M. Wolff, F. Manders, J. Suijker
Hamburg University of Applied Sciences, Hamburg, Germany
Philips Lighting, Turnhout, Belgium
High-intensity discharge lamps will in the foreseeable future be important light sources despite a growing market share of LEDs. Cost and energy efficient high frequency (300 kHz) operation is hampered by the excitation of acoustic resonances inside the arc tube, which results in low frequency (10 Hz) light flicker. Our aim is to calculate the acoustic streaming velocity field, which is related ...