F. L. Durán Martínez , A. M. Billet , C. Julcour-Lebigue , F. Larachi ,
 Toulouse University, Toulouse, France
 Laval University, Quebec, Canada
In the present work, numerical simulations of a Monolith Reactor (MR) are carried out in order to develop a pre-design tool for industrial-scale reactors applied to highly exothermal reactions. The reacting circular channels (2-4 mm internal diameter) are coated with a few micron thick catalytic layer (washcoat), and host a gas-liquid segmented flow (the so-called Taylor flow) known to enhance ...
Modeling of Wettability Alteration during Spontaneous Imbibition of Mutually Soluble Solvents in Mixed Wet Fractured Reservoirs - new
M. Chahardowli, H. Bruining
Delft University of Technology, Delft, The Netherlands
Mutually-soluble solvents can enhance oil recovery both in completely and partially water wet fractured reservoirs. When a strongly or partially water-wet matrix is surrounded by an immiscible wetting phase in the fracture, spontaneous imbibition is the most important production mechanism. Initially, the solvent moves with the imbibing brine into the core. However, upon contact with oil, as the ...
A. Pokryvailo ,
 Spellman High Voltage Electronics Corporation, Hauppauge, NY, USA
Electric field can bring liquid in motion and thus influence heat transfer. Electro-convection (EC) can be caused by electric forces acting on a liquid, even in absence of space charge. Here, we studied heat transfer in a metal vessel filled by oil, with a submersed high voltage electrode serving as source of heat. Physics involved are Electrostatics and Laminar Flow with Heat Transfer. ...
V. Orava , O. Souček , P. Cendula 
 Institute of Computational Physics, ZHAW, Winterthur, Switzerland
 Faculty of Mathematics and Physics, Charles University in Prague, Prague, Czech Republic
We investigate a prototype concept of a back-up electricity device where we use liquid formic acid (FA) to produce a mixture of carbon dioxide (CO2) and hydrogen (H2) which is used in a PEM fuel cell, Fig. 1. In the fluidized bed reactor the liquid FA is decomposed to a gaseous mixture of CO2 and H2 in the presence of microscopic floating solid catalytic particles. We describe the system, ...
P. Geraldini ,
 Sogin Spa, Rome, Italy
The aim of this study is to design a new concept of shrouded probe that meets the ISO 2889 requirements and it is suitable for small-ducts installation. In order to reduce the construction costs they have been considered standard stainless steel welding fittings manufactured according to ASME/ANSI specifications. In particular, with the numerical simulations, they have been firstly evaluated ...
W. Chalgham , A. C. Seibi , M. Mokhtari ,
 University of Louisiana at Lafayette, Lafayette, LA, USA
One of the limitations of pipelines performance and structural integrity assessment is the continuous inspection of possible leaks due to corrosion or other types of failure mechanisms. Efforts to develop new technologies started several decades ago where different inspection techniques were used to enhance pipelines structural integrity. However, although available technologies present some ...
N. Kleinknecht, and S. A. Halvorsen
In many metallurgical processes metals are (heated and) stirred by an oscillating external magnetic field. The magnetic field induces electric currents in the metal and the currents interact with the magnetic field to create a force, the Lorentz force. For high frequencies induction only takes place in an electromagnetic boundary layer due to the skin effect and the force is confined within this ...
D. Samajdar, P. Podder, A. Bhattacharyya, S. Sen
Institute of Radio Physics and Electronics, University of Calcutta, Kolkata, WB, India
In the emerging field of MEMS microfluidics, micropumps and microvalves are two of the most important devices with a wide spectrum of applications such as programmable drug delivery systems, lab-on-a chip devices, µTAS (micro total analysis system), micro electric cooling applications etc. These microfluidic components are dominating the MEMS applications by virtue of their improved performance ...
S. Denys, S. Verbruggen, S. Lenaerts
Sustainable Energy and Air Purification, Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium
Introduction Among the advanced oxidation processes (AOPs) for removal of volatile organic compounds (VOCs) from air, photocatalytic oxidation (PCO) is considered a very promising technology [1,2]. PCO can achieve mineralization of harmful VOCs to CO2 and H2O using only UV light . A main challenge is to find appropriate kinetic models and parameters that accurately describe the rate of ...
Massachusetts Institute of Technology: Lincoln Laboratory, Lexington, MA, USA
In this numerical study, surface acoustic waves (SAWs) are evaluated as a potential disruptive flow technology for enhancing heat transfer in microchannels. Using COMSOL Multiphysics® software, the physics governing acoustics, single-phase-fluid flow and heat transfer are coupled. The results show that acoustic streaming can disrupt the bulk fluid flow, creating rotating vortices within the ...