V. Teotia, S. Malhotra, K. Singh, and U. Mahapatra
Bhabha Atomic Research Centre, Mumbai, Maharashtra, India
Liquid metal loops are used for heat removal and for the study of certain magneto-fluidic phenomenon like MHD (Magneto-Hydro Dynamic) effects. These loops operate at high temperatures and carry fluids that are invariably toxic in nature. Ensuring the purity of fluid in a closed loop application needs non-intrusive pumps electromagnetic pumps. We have designed and analyzed a prototype ...
S. Rabbani, P.K. Rathore, G. Ghosh, and B.S. Panwar
Indian Institute of Technology Delhi, New Delhi, India
In this paper, a piezoelectric cantilever is investigated using finite element analysis made possible by COMSOL Multiphysics for the generation of electrical energy. A micro power generator was designed to convert mechanical vibrations present in the environment to electrical power. The model was studied for different cantilever dimensions. The load resistor was optimized for obtaining maximum ...
T. Selvam, V.P. Kotte, and M. Marimuthu
HCL Technologies Ltd, Chennai, Tamil Nadu, India
Globally in Otolaryngology industry, Sinusitis is one of the most common diseases related to the nose. Sinusitis is caused when the cilia fail to move the mucus. As a result sinus tissue gets infected that leads to blockage of the sinuses. All the sinusitis can not be cured through drugs and certain require surgery. When a sinus cavity subjected to a nasal endoscopic surgical procedure, one of ...
A.K. Dwivedi, R.M. Patrikar, R.B. Deshmukh, and G. Pendharkar
Visvesvaraya National Institute of Technology, Nagpur, Maharashtra, India
Testing and verification is very important to increase reliability of a system. In water analysis its purity is verified using different test methods. Biosensors are very useful to detect the microorganisms present in water. This paper presents a method to detect E.coli bacteria in water depending upon the capacitance modulation in the presence and absence of E.coli cell, which is simulated in ...
Three-Dimensional Finite Element Modeling of Magnetic Flux Leakage Technique for Detection of Defects in Carbon Steel Plates
W.S. Singh, S. Thirunavukkarasu, S. Mahadevan, C. Mukhopadhyay, B.P.C. Rao, and T. Jayakumar
Non Destructive Evaluation Division, Metallurgy and Materials Group, Indira Gandhi Centre for Atomic Research, Kalpakkam Tamil Nadu, India
Three-dimensional finite element (FE) modeling of magnetic flux leakage (MFL) technique has been performed using COMSOL 3.4 for prediction of leakage fields from surface and sub-surface defects in a 12 mm thick carbon steel plate. The tangential and normal components of leakage fields have been predicted to study the influence of defect location and depth on the detectability of sub-surface ...
Dr. K.B. Deshpande
Senior Researcher, General Motors R&D, India Science Lab, Bangalore, Karnataka, India
Kiran received his M. S. from Indian Institute of Science, Bangalore and his Ph.D. from University of Sheffield, both in Chemical Engineering. He is currently working as a Senior Researcher at the General Motors R&D, India Science Lab, Bangalore where he is involved in modeling of galvanic corrosion and its mitigation strategies. Prior to joining GM R&D, he was Knowledge Transfer Program ...
2D Simulations and Electro-Thermal Analysis of Microheater Designs using COMSOL for Gas Sensor Applications
G. Velmathi, N. Ramshanker, and S. Mohan
Department of Instrumentation, Indian Institute of Science, Bangalore, Karnataka, India
Microheaters have been widely investigated because of their extensive applications in gas sensors, flow rate sensors and other Microsystems. The geometric optimization for the microheater was performed by simulating a wide range of possible geometries using COMSOL Multiphysics, a commercial Finite Element Analysis (FEA) package. The simulated results of Microheaters having an improved temperature ...
A. Sharma, K. Rangra, M. Kaur, and D. Kumar
Central Electronics Engineering Research Institute, Pilani, Rajasthan, India
Kurukshetra University, Kurukshetra, Haryana, India
A set of microstructures for in situ stress measurement is presented, based on a lancet principle having dedicated designs for the amplification of dimensional variation induced by internal stress of the materials. The presented technique has an advantage over the traditional rotating structures and wafer curvature measurements in terms of the simplified readout mechanism. The test structures are ...
Evaluation Of AC Loss And Temperature Distribution In High Temperature Superconducting Tape Using COMSOL Multiphysics
G. Konar, and N. Charaborty
Jadavpur University, Kolkata, West Bengal, India
High temperature superconductors (HTS) are promising candidates for electrical power applications. However, the superconductors exhibits energy loss known as AC loss when exposed to time varying external magnetic field and/or transport current. In this paper, AC loss in an elliptical Ag sheathed Bi2223 (HTS) tape is calculated using the time dependent PDE mode of COMSOL Multiphysics. The HTS tape ...
V. Bhatt, R.S Rautela, P. Sharma, D.C. Tiwari, and S. Khushu
Institute of Nuclear Medicine & Allied Sciences (DRDO), Delhi, India
The Helmholtz Coil generates a uniform magnetic field. The commercially available large-size Helmholtz coils prove to be very expensive. This paper describes the economical method of designing and construction of a Helmholtz coil. COMSOL Multiphysics AC/DC Module simulated results and actual results were compared in this study. The coil serves as a component in the system for Hyperpolarisation of ...