L. Helmich, A. Huetten
Bielefeld University, Bielefeld, Germany
Thermography measurements on metallic thin films are challenging due to reflections from the environment. We present a thin "gold black" absorption layer to deal with this issue. A multiphysics model is introduced to correct the experimentally obtained data for undesirable heat transfer effects between the metallic sample and the absoption layer.
D. M. Djokic, L. Antognazza, M. Abplanalp, M. Decroux
DPMC, University of Geneva, Geneva, Switzerland
ABB Corporate Research Centre, Dättwil, Switzerland
YBCO Coated Conductors (CCs), used for applications in Resistive Superconducting Fault Current Limiters (RSFCLs), are known to have insufficiently high Normal Zone Propagation Velocity (NZPV) during quench events. The improvement can be made by enhancing the thermal conductivity of YBCO-CCs with no decrease in the electrical resistivity. We studied the advantage of multilayered structures grown ...
Bourouga, B.1, Le Meur, G.1, Garnier, B.1, Michaud, J.F.2, Mohammed-Brahim, T.2
1 Laboratoire de Thermocinétique de Nantes
2 IETR – Groupe de Microélectronique-Université Rennes I
Development of new handling microsystems needs integration of field effect thin film transistors made directly on various low temperature substrates, as glass for example, with other functions. Argon laser is used to melt completely and then to crystallize 400 nm thick amorphous silicon films. However, the implementation of this process generates cracking and destruction of the silicon thin film ...
S.-K. Kim1, S.-R. Kim2, and J. Kim1
1Korea Institute of Radiological and Medical Sciences (KIRAMS), Korea
2Hanil Nuclear Co., Ltd., Korea
The large-scale production of various radioisotopes is usually carried out with a disk type target system in which solid target materials are located in a stack and a cooled by forced water-cooling. Although the production yields of radioisotopes can be enhanced by employing high currents of proton beams, the maximum beam powers (beam energy multiplied by beam currents) deposited on targets is ...
Modeling of the Bread Baking Process Using Moving Boundary and Arbitrary-Lagrangian-Eulerian (ALE) Approaches
C. Anandharamakrishnan, N. Chhanwal, P. Karthik, D. Indrani, and K.S.M.S. Raghavarao
Central Food Technological Research Institute, Mysore, Karnataka, India
Bread baking is a complex process where various physiochemical and biological transformations take place simultaneously. A two dimensional model was developed for the bread baking process taking into account of volume expansion, heat and mass transfer processes. Phase change and evaporation-condensation mechanism were incorporated by defining thermo-physical properties of bread as a function of ...
SORIN Group, France
In all implantable medical devices, one main challenge is to assure no water penetrates in the electronic part of the system. To be able to transmit the electronic information from the inside of the device to the lead without any water infiltration, we used a complex part called feed through. This piece is made of four different materials: titanium, alumina, gold and platinum. It is ...
H. Chen-Mayer, R. E. Tosh
NIST, Gaithersburg, MD, USA
Direct realization of absorbed dose to water in diagnostic radiation via calorimetric methods poses many challenges since the thermal signal of interest may be less than a few microKelvin. In actual biological systems or structures, like the lung, there is the additional complication of tissue heterogeneity, which introduces a quasi-random component to the dose distribution, hence to thermal ...
3D COMSOL Multiphysics® Model of a Plate Heat Exchanger to Support a Laboratory Teaching Environment
N. Medeiros, W. Clark
Worcester Polytechnic Institute, Worcester, MA, USA
Chemical engineering students and practitioners need an understanding of fluid flow and heat transfer inside heat exchangers. Because the flow within plate heat exchangers is difficult to visualize, we developed COMSOL Multiphysics® simulations of plate heat exchangers for students to study alongside a physical heat exchanger in a laboratory setting. Simulative experiments allow students to ...
F. F. Dall'Agnol, A. Pavani
Center for Information Technology Renato Archer, Campinas, SP, Brazil
Evaporative coolers are viable alternative to air conditioners because of their low power consumption. However, in tropical humid environments the increased humidity that accompanies the cool air in the evaporative coolers causes an uncomfortable wet feeling, since it hinders the evaporation of our natural transpiration. Here we test a configuration of evaporative cooler called Indirect Cycle ...
J.A. Ospina and E. Canuto
Politecnico di Torino, Torino, Italy
The research project under which the COMSOL simulations are performed deals with multilayer and fine thermal control of an optical reference cavity for space applications. The cavity, made of Ultra Low Expansion glass (Corning ULE), must be kept close to the zero expansion temperature of the glass (close to room temperature). The target can only be met by active control, while leaving the cavity ...