M. R. Naik
Nitte Meenakshi Institute of Technology, Bengaluru, Karnataka, India
In a modern IC design, the capability of predicting the temperature profile is critically important as well as cooling and related thermal problems are the principal challenges. To address these challenges, thermal analysis must be embedded within IC synthesis. This paper presents thermal analysis of the FCBGA chip with a 4mm×4mm×0.3mm silicon die. The silicon die dissipates heat flux of ...
Análise de Influência da Utilização de Propriedades Termodependentes na Simulação de Juntas Soldadas
A. A. S. B. Cruz , N. S. B. da Silva ,
 Universidade Federal de Pernambuco, Recife, PB, Brasil
Visando minimizar os cálculos envolvidos em simulações numéricas de juntas soldadas e diminuir a quantidade de informações necessárias, busca-se fazer simplificações que não tenham influências consideráveis nos resultados. Para o presente trabalho, analisou-se, através do COMSOL Multiphysics, o impacto das propriedades dos materiais dependentes da temperatura neste tipo de simulação. Para ...
A. Rojas-Morín, Y. Flores-Salgado, A. Barba-Pingarrón, R. Valdéz-Navarro, F. Mendéz, O. Alvarez-Brito, M. Salgado-Baltazar
Facultad de Ingeniería, Universidad Nacional Autónoma de México, Ciudad Universitaria, D.F. México
DGTIC, Universidad Nacional Autónoma de México, Ciudad Universitaria, D.F. México
Programa de Posgrado en Ingeniería, Universidad Nacional Autónoma de México.
In this paper, we simulated the heating of a work piece by coupling two heat sources. Concentrated solar energy was applied at the bottom of the work piece, which generated a heat flux from the parabolic solar dish concentrator. Subsequently, induction heating was applied, which generated Eddy currents that circulated through the work piece and heated the surface of the material. A numerical ...
C. Gomez , R. F. Coker , J. Knox , G. Schunk 
 NASA MSFC, Huntsville, AL, USA
The primary interest of the VC (Vacuum Characterization) test is to experimentally characterize the adsorption and vacuum desorption of CO2 and water vapor of a pelletized sorbent bed in a large diameter column. The VC test article is shown in Figures 1 and 2. The aluminum canister is 3” in diameter and approximately 8” long allowing for variable sorbent bed loads from 1” to 6” in length. A ...
R. Busqué , R. Torres , A. Husar , J. Grau 
 Escola Universitària d'Enginyeria Tècnica Industrial de Barcelona, Barcelona, Spain
 Institut de Robòtica i Informàtica Industrial CSIC-UPC, Barcelona, Spain
The storage of hydrogen as an absorbed element in metal hydride bottles is a promising technique for energy storage. In this work, a three-dimensional model of a charging process in a metal hydride container has been developed to simulate the absorption reaction and resultant heat and mass transport phenomena in metal hydride vessels. The model has been experimentally validated showing a good ...
A. Briffaz , J. M. Méot , P. Bohuon , C. Mestres , B. Matignon , M. Dornier 
 CIRAD, Montpellier, France
 CIRAD, Montpellier, France
 Montpellier SupAgro, Montpellier, France
Describing and predicting the extent of the physicochemical processes as well as geometrical deformation taking place during food transformation is of major importance to control food functional properties. Unfortunately, only a few food-matrix models consider deformation particularly because of large deformation. In the case of a starchy product such as rice, water transport and swelling ...
A.W.M. van Schijndel and H.L. Schellen
Eindhoven University of Technology, Eindhoven, The Netherlands
This paper presents the use of the multiphysics package COMSOL for teaching heat and moisture transport modeling in the research area of building physics. It includes a description on how COMSOL works and six exercises with 2D, 3D, steady state and transient models. It is concluded that COMSOL is a very useful tool for this kind of engineering education. Especially, the abstraction level of ...
Heat Loss Evaluation of an Experimental Set-up for Predicting the Initial Stage of the Boiling Curve for Water at low Pressure
K. T. Witte, F. Dammel, L. Schnabel, and P. Stephan
Fraunhofer Institut Solare Energiesysteme - Department of Thermal Systems and Buildings, Freiburg, Germany
Technische Universität Darmstadt - Institute of Technical Thermodynamics, Darmstadt, Germany
In this paper heat losses and gains are assessed for a specific measuring set-up improving the validity of performance data to accurately predict the initial stage of a boiling curve. Simulation focus on achieving results predicting real measuring data of a plain surface structure. Therefore, the relevant components of the measuring set-up have been implemented in a 2-D axisymmetric model ...
Simulation and Experimental Validation of Direct Heating of Dhruva Fuel Rod for β Heat Treatment - new
B. Patidar, A. P. Tiwari, V. Patidar, M. M. Hussain, K. K. Abdulla
Bhabha Atomic Research Centre, Mumbai, Maharashatra, India
β heat treatment of Uranium rods is carried out for randomization of oriented grains (called texture) developed during hot rolling or hot extrusion operation. During this process, Uranium rods undergo heating of up to 740 Deg C followed by water quenching. The objective of this work is to see the feasibility of direct heating technique for heat treatment application. At present, heat treatment ...
D. Guo, A. McGaughey, G. Fedder, M. Lee, and S. Yao
Carnegie Mellon University
Micro-scale devices based on the Stirling cycle are an attractive choice for chip- and board-level electronics. A new Stirling cycle micro-refrigeration system composed of arrays of silicon MEMS cooling elements has been designed. COMSOL is used to evaluate the thermal performance of the system. Simulation of compressible flow and heat transfer with a large deformed mesh has been successfully ...