COMSOL Derived Universal Scaling Model For Low Reynolds Number Viscous Flow Through Microfabricated Pillars – Applications to Heat Pipe Technology
N. Srivastava, and C.D. Meinhart
Department of Mechanical Engineering, University of California Santa Barbara, Santa Barbara California, USA
Cooling of high-power density electronic devices remains a challenge. Microfluidic heat-pipes with the potential of achieving ultra-high thermal conductivities offer a low-cost technology for cooling electronics. To achieve high thermal conductivity, it is critical to maximize the rate of liquid transport inside the heat pipe. We propose a novel array of microfabricated pillars to maximize liquid ...
Ken Kang-Hsin Wang, and Timothy C. Zhu
Department of Radiation Oncology, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
Singlet oxygen (1O2) is the major cytotoxic agent during type-II photodynamic therapy (PDT). The production of 1O2involves the complex reactions among cancer agent, oxygen molecule, and treatment laser light. The light propagation in tumor tissue is described by the diffusion equation. In this work, an optimization routine is developed to fit the [1O2]rx profile to the simulated necrosis ...
M. Suárez , and F. Samaniego 
Faculty of Sciences, Michoacán University (UMSNH), Morelia, Michoacan, Mexico
Faculty of Engineering Postgrade Studies Division, National University of Mexico (UNAM), Mexico City, Mexico
New geothermal energy sources hold promise for the future. Deep submarine geothermal energy related to hydrothermal vents is emerging in many places along the oceanic spreading centers. Shallow submarine geothermal systems are found near to continental platforms. We present the initial development of mathematical models to simulate the energy transport in submarine systems. A model for the ...
S.M. Musa, and M.N.O. Sadiku
Prairie View A&M University Networking Academy, Prairie View, Texas, USA
This paper presents the quasi-TEM two-dimensional (2D) approach for the analysis of multiconductor transmission lines interconnect in single and two-layered dielectric region using the finite element method (FEM). FEM is especially suitable and effective for the computation of electromagnetic fields in strongly inhomogeneous media. We illustrate that FEM is as suitable and effective as other ...
N.N. Sharma, and A. Tekawade
Mechanical Engineering Group, Birla Institute of Technology & Science, Pilani, Rajasthan, India
A simple design for a microfluidic flow system for use in mixing or reacting assays with limited sample availability has been proposed and analyzed using COMSOL\'s multiphysics simulation package. The design is based on differential electroosmotic flow concept which has facilitated a number of interesting flow phenomena in micro-domains. For an average potential drop of about 86 kV/m in the ...
Deformation of Drop-within-Drop System under the Influence of High Intensity Oscillating Electric Field
D. Das, R.S. Patil, S. Kulkarni, V.A. Juvekar, and R. Bhattacharya
IIT Bombay, Mumbai, Maharashtra, India
India Atomic Energy Regulatory Board, Mumbai, Maharashtra, India
This paper deals with the simulation study using COMSOL on the deformation of drop-within-drop system in a high intensity oscillating electric field. It consists of a composite drop suspended in a continuous phase. This composite drop has a smaller inner drop suspended within the larger outer drop. The outer drop is made up of another immiscible liquid. A high intensity sinusoidally varying axial ...
S. Agarwal, S.P. Ruhela, V. Mente, M.G. Hemanath, B. Murlidhran, V.S. Kumar, C.P. Reddy, G. Ravisankar, B.K. Sharma, K. Nagarajan, C.A. Babu, and P. Kalyanasundaram
Indira Gandhi Centre for Atomic Research, Kalpakkam, Tamil Nadu, India
Pyrochemical process based on molten salt electrorefining is ideally suited for reprocessing spent metallic fuels from Fast Breeder Reactors. In this work, a heat transfer analysis of the Electrorefiner cell was conducted to develop a basic tool for designing of the engineering–scale Electrorefiner. The focus of this work is to find out steady state temperature profiles of cover gas and molten ...
S.F. Jahn[1,3], S. Ebert, M. Hackert, W.A. Goedel, R.R. Baumann, and A. Schubert[1,4]
Chemnitz University of Technology, Chair Micromanufacturing Technology, Germany
Chemnitz University of Technology, Physical Chemistry, Germany
Chemnitz University of Technology, Professorship for Digital Printing and Imaging, Germany
Fraunhofer Institute for Machine Tools and Forming Technology, Chemnitz, Germany
Porous membranes with pore sizes in the micrometer scale are required in many micro systems dedicated to biological and chemical applications. If their thickness is in the same dimension like the pore diameter they are called microsieves. On the one hand, a thin membrane guarantees a small flow resistance but on the other hand the mechanical strength is reduced. We developed a process which ...
J. Lippmann-Pipke, J. Kulenkampff, G. Marion, and M. Richter
Rossendorf, Institut of Radiochemistry
Research Site Leipzig
Reactive Transport Division
We apply COMSOL Multiphysics for reproducing our experimental observations of fluid flow and transport processes in geological media. Our experimental GeoEPT-method allows the 4D monitoring of transport processes in geological material on laboratory scale. Explicitly we import “realistic structures” from geologic samples scanned by means of computer tomography (CT) as stl-files into COMSOL ...
G. Ganzer, W. Beckert, T. Pfeifer, and A. Michaelis
The high thermal stability and fast start-up behavior make micro-tubular solid oxide fuel cells (SOFCs) a promising alternative for small-scale, mobile power devices in the range of some Watts. To understand the transport phenomena inside a single micro-tubular SOFC, a 2-D, axi-symmetric, non-isothermal model, performed in COMSOL Multiphysics® 4.2, has been developed. Due to long current path ...