A Coulomb Stress Model to Simulate Induced Seismicity Due to Fluid Injection and Withdrawal in Deep Boreholes
G. Perillo, G. De Natale, C. Troise, A. Troiano, M.G. Di Giuseppe, A. Tramelli
University of Naples Parthenope, Naples, Italy
INGV, Osservatorio Vesuviano, Naples, Italy
Fluid injection and withdrawal in deep wells is a basic procedure in mining activities and deep resources exploitation, i.e. oil and gas extraction, geothermal exploitation, geothermal permeability enhancement and waste ?uid disposal. All these activities have the potential to induce seismicity, as dramatically demonstrated by the 2006 Basilea earthquake of magnitude ML=3.4. The mechanism of ...
Reverse Electrodialysis Process with Seawater and Concentrated Brines: a COMSOL Multiphysics® Model for Equipment Design
M. Tedesco, A. Cipollina, C. Scavuzzo, A. Tamburini, G. Micale
Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica (DICGIM), Università di Palermo (UNIPA), Palermo, Italy
Salinity Gradient Power (SGP) is a promising renewable energy source associated to the controlled mixing of two aqueous solutions of different salinities. Recently, Reverse Electrodialysis process (SGP-RE, or RED) has been identified as a successful way for the exploitation of such energy source, allowing the conversion of SGP directly into electric energy. COMSOL Multiphysics® modelling ...
Materials Synthesis & Integrated Devices, Los Alamos National Laboratory, Los Alamos, NM, USA
Oil and water are immiscible fluids and they tend to separate very easily when introduced into a flow stream from two different sources in a flow loop. This model studies the development of mixture volume fraction in an oil-water-flow loop with 3 different passive mixing schemes: (i) blind-T, (ii) check valve, and (iii) static mixer. Each device produces different levels of mixture homogeneity ...
B. Chinè, F. Concha, M. Meneses G.
School of Materials Science and Engineering, Costa Rica Institute of Technology, Cartago, Costa Rica
Department of Metallurgical Engineering, University of Concepcion, Concepcion, Chile
School of Production Engineering, Costa Rica Institute of Technology, Cartago, Costa Rica
Hydrocyclones are industrial devices used as processing units in fluid and particle technology. A hydrocyclone is an apparatus consisting of a cylindrical or a cylindrical-conical body with a tangential or involute entrance to admit the fluid inside. There are also two opposite exits, the top exit which is the vortex finder and the bottom exit called apex. Fig. 1 shows the schematic of a widely ...
D. Rossi, P. Scotton
University of Padova, Department of Geosciences, Padova, Italy
The research aims to clarify some aspects of the thermo-fluid dynamics of woody biomass flue gas, within the twisted conduit inside the heat accumulation stoves, and exposes also some analysis about the heat transport and heat exchange processes. The high temperature flue gas flows in the conduit, releasing heat to the refractory. The heat stored in the refractory is then released to the ...
Investigation of Mean-Flow Effects on Tubular Combustion Chamber Thermoacoustics Using a Burner Transfer Matrix Approach - new
A. Andreini, B. Facchini, A. Innocenti, D. Pampaloni
University of Florence, Florence, Italy
The paper presents a methodology to account for local mean-flow effects on thermo-acoustic instabilities to improve typical calculations performed under the zero-Mach number assumption. A 3D FEM model of a simplified combustor is solved with COMSOL Multiphysics® Pressure Acoustics interface. The Helmholtz equation is used to model the combustor and the classical k-τ model for the Flame Transfer ...
Trapping DNA Molecules in Fluids Using Electrokinetic Effects Generated by Different Electrode Geometries
S. Ghonge, S. Kapur , S. Banerjee
Birla Institute of Technology and Science, Pilani - Hyderabad Campus, Hyderabad, Telangana, India
In this paper we present results of simulations done to predict the behavior of a system consisting of DNA molecules in an aqueous medium under the combined effect of AC Electroosmosis and Dielectrophoresis (DEP). ACEO is caused by the movement of fluid particles under the influence of the electric field. DEP is caused by polarization of the DNA particle. Two different electrode geometries ...
K. Wegman , X. Sun ,
 Department of Mechanical and Aerospace Engineering, Ohio State University, Columbus, OH, USA
In this experiment, the performance of a Printed Circuit Heat Exchanger (PCHE) was studied using COMSOL Multiphysics® software. PCHEs are diffusion bonded heat exchangers containing semicircular, chemically etched flow paths. Helium was used as the working fluid on both the hot and cold sides. A simplified model was used in the simulation, and the results were compared to experimental results. ...
W. Clark, and M. Lindblad
Chemical Engineering Department, Worcester Polytechnic Institute, Worcester, Massachusetts, USA
Two-phase electrophoresis is a separation method that combines aqueous two-phase partitioning with electrophoresis and has promise for large scale recovery of biological products. Aqueous two-phase systems formed by adding two polymers, like dextran and polyethylene glycol, to water provide some separation of dissolved species due to differences in solubility of solutes between the phases. ...
Error Analysis in Estimating Temperature-Dependent Thermal Diffusivity and Kinetic Parameters using Heat Penetration Data
K.D. Dolan[1,2], A.R. Sommerlot, and D.K. Mishra
Department of Biosystems and Agricultural Engineering, Michigan State University, East Lansing, Michigan, USA
Department of Food Science and Human Nutrition, Michigan State University, East Lansing, Michigan, USA
Growing consumer demand for nutraceuticals has stimulated interest by food companies to increase levels of these health-promoting compounds. Thermal processing of canned foods in a retort produces a unique problem: some of the nutraceuticals are highly sensitive to temperature, and require accurate parameter estimates to predict their fate during processing. Error in temperature measurement due ...