R. F. Coker, J. Knox
NASA Marshall Space Flight Center, Huntsville, AL, USA
The Atmosphere Revitalization Recovery and Environmental Monitoring (ARREM) project was initiated in September of 2011 as part of the Advanced Exploration Systems (AES) program. Under the ARREM project, testing of sub-scale and full-scale systems has been combined with multiphysics computer simulations for evaluation and optimization of subsystem approaches. In particular, this paper describes ...
N. Rezaii , J. P. Mai ,
 JPM Silicon GmbH, Braunschweig, Germany
The JPM Silicon GmbH presents a novel method for the production of solar grade silicon in the microwave oven. This method can specially reduce the energy costs and increase the efficiency of the process. A numerical model is developed which depicts the physical, chemical and electromagnetic phenomena of silicon production process. In order to increase the efficiency of the system, it is ...
A. Jhaveri , M. Kushhare , A. Bhargav ,
 Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, India.
Imaging Infrared Spectrometer (IIRS) is a Hyperspectral optical imaging instrument which measures the spectra of a scene in high resolution within spectral bands covering Near Infrared (NIR) to Mid Infrared (MIR) regions. Radiation entering the spectrometer assembly governs the temperature of different internal parts and hence plays an important role in determining the desired spectral ...
Simulation of Dendritic Solidification in Cubic and HCP Crystals by Cellular Automaton and Phase-Field Models
M. A. Zaeem, H. Yin, and S. D. Felicelli
Center for Advanced Vehicular Systems, Mississippi State University, MS
Oak Ridge National Laboratory, TN
Mechanical Engineering Department, Mississippi State University, MS
A cellular automaton (CA)-finite element (FE) model and a phase field (PF)-FE model were used to simulate equiaxed dendritic growth during solidification of cubic and hexagonal crystals. The governing equations of PF model include three coupled partial differential equations (PDE) for evolution of concentration, temperature, and non-conserved PF variable. These PDEs were solved using the ...
K. Dusarlapudi, B. K. Nashine, D. Bai, and C. S. Babu
KL University, Vaddeswaram, Guntur, Andhra Pradesh, India
E.D&S.S, IGCAR Kalpakkam, India
VIT, Vellore, India
Thermocouples have been used for measurement of temperature ever since the discovery of Seebeck effect. Though the voltage output of a thermocouple is a function of the temperature difference between hot and cold junctions, the response time and the magnitude of voltage depends on the geometry and material of the thermocouple also. This report deals with the study of the mineral-insulted ...
Boopathi S, Ms.E.Malar, Deepan Chakravarthi P
Department of Biomedical Engineering, PSG College of Technology, Coimbatore, Tamil Nadu, India
This paper deals with an integrated numerical and experimental analysis work aiming at the investigation of the thermal stress on nanowires in electronic gadgets especially computers and mobile phones. The comparative study of the nanowires are analyzed through the Thermal Stress physics using different variants such as Cu, Al, ZnO, Si(c), SiO2 which can be used in sensors, solar cells, LCD, ...
M. Bortoloni, M. Bottarelli, Y. Su
Department of Engineering, University of Ferrara, Este, Italy
Department of Architecture, University of Ferrara, Este, Italy
Faculty of Engineering, University of Nottingham, Nottingham, UK
In ground-coupled heat pumps (GCHPs) the coupling between heat pumps and ground occurs by means of ground heat exchangers, that can be installed vertically inside boreholes (BHEs) or horizontally (HGHEs). In the horizontal installation, the heat exchangers are placed in shallow trenches dug few meters deep in soil. Unlike BHEs which benefit from the relatively stable temperature of deep soil, ...
J. D. Freels, P. K. Jain, C. J. Hurt
Oak Ridge National Laboratory, Oak Ridge, TN, USA
The University of Tennessee, Knoxville, TN, USA
Our safety analysis group in the Research Reactors Division of Oak Ridge National Laboratory supports a project to investigate the production of Pu-238 isotope for missions of deep space travel in the High Flux Research Reactor. COMSOL Multiphysics® has been used to support this activity in the past, and we have successfully installed and irradiated three different target designs. The gas-gap ...
M. Hackert-Oschätzchen, R. Paul, M. Penzel, M. Zinecker, A. Schubert
Professorship Micromanufacturing Technology, Technische Universität Chemnitz, Chemnitz, Germany
Evaporative cooling is a promising cooling method for dissipating high heat fluxes in high power density applications. One possibility to enhance heat flux is a generation of microstructures into the cooler surface. This enlarges the cooler surface and systematically affects the fluid flow as well as the boiling process. In this study the geometric arrangement of cylindrical pin microstructures ...
G. Liebig , P. Bohn , L. Komsiyska , S. Vasić 
 NEXT ENERGY EWE-Forschungszentrum, Oldenburg, Germany
 AUDI AG, Ingolstadt, Germany
A thermo-physical 3D model of a commercial Li-ion battery was developed and validated. Visualization of the temperature distributions inside a Li-ion cell during cell stacking processes were simulated. Critical temperature levels depend on position, duration and intensity of the thermal stressing. Results show a maximum local temperature of 180 °C at the jelly roll after laser welding for 4 s ...