D. Groulx, and W. Ogoh
Mechanical Engineering Department, Dalhousie University, Halifax, Nova Scotia, Canada
One way of storing thermal energy is through the use of latent heat energy storage systems. One such system, composed of a cylindrical container filled with paraffin wax, through which a copper pipe carrying hot water is inserted, is presented in this paper. It is shown that the physical processes encountered in the flow of water, the heat transfer by conduction and convection, and the phase ...
Dr. Singh has been working at the Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai since 2000. He has a Ph.D. from the Department of Chemical Engineering, IIT Bombay. He is a recipient of the Homi Bhabha Medal of Bhabha Atomic Research Centre in year 2000, Young Engineer Award of the Department of Atomic Energy in year 2008 and Award for Excellence in Thesis Work at IIT ...
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 ...
Modelling and Simulation of Single Phase Fluid Flow and Heat Transfer in Packed Beds using COMSOL Multiphysics
S. Sachdev, S. Pareek, B. Mahadevan, A. Deshpande
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 ...
P. K. Bahumanyam
University of Alabama in Huntsville, Huntsville, AL, USA
Viable design alternative for the existing and fast growing UAVs which are optimized for unmanned flight is of great demand. Designing of a small scale UAV alternative to the AAI Aerosonde UAV has been considered changing the wing tail configuration of the vehicle analyzing both structural and aerodynamic performance improvements using COMSOL Multiphysics® software.
K. O. Lund
Engineering Consultant to SML Associates, Del Mar, CA, USA
Viscous equations are developed for regions with two interacting flowing fluids, or two fluid phases, such as occur in fluidized particle beds or the mixing of fluids. The descriptive equations are rendered into the standard COMSOL PDE matrix form, and solved over typical two-dimensional regions, as time-dependent interacting laminar flows.The model geometry selected is that of a so-called ...
S. Gorelick, M. Leivo, U. Kantojärvi
VTT Technical Research Centre of Finland, Espoo, Finland
Excessive air damping can be detrimental to the performance of oscillating MEMS components. Complex systems, such as structures in pre-etched cavities or angular comb-drive scanning mirrors, typically require simulations to reliably evaluate the air damping. The simulated and experimental performance of the following systems was evaluated and compared: two types of out-of-plane cantilevers, ...
Geometric Modeling and Numerical Simulation of Airfoil Shapes Using Integrated MATLAB® and COMSOL Multiphysics
A. Safari, H. Lemu G., H. Severson
University of Stavanger, Stavanger, Norway
This paper proposes a framework for an efficient integration between geometric modeling program and analysis tool for a coming automated aerodynamic design optimization mission. This demand can be addressed by using both in-house codes and commercial software which have the good ability of live-link and efficient integration. In this study, the mathematical modeling of a turbomachinery airfoil ...
K. T. Sandeep, S. Sahu, V. C. Chaudhari, R. P. Bhattacharyay, E. R. Kumar
Institute for Plasma Research, Gandhinagar, Gujarat, India
Liquid metals are the extensively used as coolants in nuclear reactors.However, the heat transfer mechanism differs significantly in low Prandtl number heavy liquid metals (HLM’s) than those observed in common fluids. It is crucial to have the accurate heat transfer correlation for the liquid metal to estimate the heat removal efficiency. The present paper describes the use of COMSOL tool for ...
D. Droste, F. Lindner, C. Mundt, M. Pfitzner
Universität der Bundeswehr, Munich, Bavaria, Germany
In this study we investigate the heat and mass transfer in a porous media with phase change. The liquid fluid is injected from one side and heated from the other side, where it leaves the porous material in a gaseous state. Dominant forces are capillary interactions and two-phase heat conduction. To model the process we use a two-phase mixture model on a macroscopic scale. This model is ...