Artigos Técnicos e Apresentações

Aqui você encontrará apresentações realizadas nas Conferências de Usuários COMSOL de todo o mundo. As apresentações englobam pesquisas e produtos inovadores feitas por engenheiros e cientistas usando o COMSOL Multiphysics. Os tópicos abramgem uma grande gama de indústrias e aplicações, como elétrica, mecânica, escoamento e química. Use a função de busca "Quick Search" para encontrar apresentações na sua área de interesse.

A study on Spray Drying in Food Industry

S. Singh[1], N. Baheti[1], A. Tiwari[1]
[1]Institute of Engineering & Science, IPS Academy, Indore, Madhya Pradesh, India

Spray drying is a common drying technique in food industries to convert liquid to powder form. A good understanding on the dynamic behavior of the process is important to ensure proper control. The aim of this study is to develop empirical models for spray drying of whole milk powder and orange juice powder. A preliminary study on the effect of several inputs such as inlet air temperature, feed ...

Design and Simulation of MEMS based Thermally Actuated Positioning Systems

D. Mallick[1], P. K. Podder[1], A. Bhattacharyya[1]
[1]Institute of Radio Physics & Electronics, University of Calcutta, Kolkata, India

With continuous advancement in nanotechnology, requirement is rising for high precision motion controlled positioning system. Such system plays crucial role in the fabrication of micro and nano-sized objects and assemblies. They can be used for automated mask aligner, as biological sensors, in optical technology as deformable mirrors. Most significant requirements for the actuators in a ...

Design and Simulation of MEMS Based Gyroscope for Vestibular Prosthesis

R. Nithya[1], K. Kavitha[1], R. K. Shahana[1], A. Gupta[1], M. Alagappan[1]
[1]Department of Biomedical Engineering, PSG College of Technology, Coimbatore, Tamilnadu, India

The primary function of the vestibular system is to provide the brain with information about the body\'s motion and orientation. The absence of this information causes blurred vision and spatial disorientation, vertigo, dizziness, imbalance, nausea, vomiting, and other symptoms often characterize dysfunction of the vestibular system. Our aim is to design vestibular prosthesis using COMSOL ...

Modeling of Supercapacitor

G. Madabattula[1], S. K. Gupta[1]
[1]Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India

Low cost high energy density batteries that can be charged and discharged rapidly are required in a number of applications. Tapping energy from renewal resources such as solar, wind and tide requires rapidly generated energy to be first stored and then used round the clock. Storing energy of a moving vehicle as it slows down and recovering it to accelerate the vehicle later can significantly ...

Modelling and Simulation of Single Phase Fluid Flow and Heat Transfer in Packed Beds using COMSOL Multiphysics

S. Sachdev[1], S. Pareek[1], B. Mahadevan[1], A. Deshpande[1]
[1]Department of Chemical Engineering, BITS Pilani Goa Campus, Zuarinagar, Goa, India

Computational fluid dynamics has emerged as an advanced tool for studying detailed behavior of fluid flow and heat transfer characteristics in many chemical engineering applications like packed beds. Packed beds play an important role in various chemical industries. Hence understanding the fluid flow behavior and temperature variation in different sections of packed bed is essential. Geometric ...

Comparative Numerical Studies of Scramjet Inlet Performance Using k-? Turbulence Model with Adaptive Grids

V. Gopal[1], R. Kolluru[1]
[1]BMS College of Engineering, Bangalore, Karnataka, India

Scramjet inlet design remains as a key aspect for hypersonic flight. To assess the inlet design, the performance parameters namely; air-capture ratio, total pressure efficiency, inlet drag coefficient, and kinetic energy efficiency are evaluated and analysed. In the current study comparison of performance parameters is carried out by performing numerical computation of 2-D turbulent flow field ...

Effects of Fluid and Structural Forces on the Dynamic Performance of High Speed Rotating Impellers.

C. Thiagarajan[1], G. Shenoy[2], B. S. Shenoy[3]
[1]ATOA Scientific Technologies Pvt Ltd, Whitefield, Bangalore, India.
[2]Department of Mechanical & Manufacturing Engineering, Manipal Institute of technology, Manipal, India
[3]Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology, Manipal, India

Vibration and Dynamic performances of the rotating machinery are conventionally evaluated based on the dominant structural forces such as the centrifugal forces. The increase in rotational speed, miniaturization and performance, demands for improved and accurate evaluation of the vibration performance. The inclusion of coupled effects of fluid and centrifugal forces can contribute significantly ...

The Spiral RF MEMS Switch in COMSOL Multiphysics

K. M. V. Swamy[1], B. G. Sheeparamatti[1], G. R. Prakash[1]
[1]Basaveshwara Engineering Collage, Bagalkot, Karnataka, India

This work presents the study of spiral RF MEMS switch which has low actuation voltage due to spiral structure. This work is inspired by the superior performance of electrostatic RF MEMS switches over the conventional state-of-the-art solid-state devices and the potential applications in communication field. The customary high actuation voltage limits the reliability and applications especially in ...

Study of Stent Deformation and Stress Developed at Different Stent Deployment Pressures

K. Basu[1], P. Ghosh[2], A. Chanda[1]
[1]School of Bio Science and Engineering, Jadavpur University, Kolkata, West Bengal, India
[2]Jadavpur University, Kolkata, West Bengal, India

According to clinical reports, cardiovascular disease has become a major global healthcare problem. The deposition of fats, cholesterol etc. at the arterials walls causes thrombus formation leading to stenosis and arterial blockage. To tackle this, along with arterial bypass, the use of Cardiovascular Stent is considered promising and effective (in single vessel and bi vessel diseases). While ...

Analysis & Design Optimization of Laterally Driven PolySilicon Electro-thermal Microgripper for Micro-objects Manipulation

T. Pahwa[1], S. Gupta[1], V. Bansal[1], R. Narwal[1], B. Prasad[1], D. Kumar[1]
[1]Electronic Science Department, Kurukshetra University, Kurukshetra, India

Micro-grippers find applications in micro-robotics, microsurgery, micro-fluidics, micro-relays, assembling and miniature medical instrumentation. Actuation principle involved may be electrothermal, electrostatic, piezoelectric, shape memory and electromagnetic. It has been found that thermal actuation provides greater displacement at low voltages when compared to other mechanisms. A 3-D ...

Quick Search