D. Papasidero, F. Manenti
Politecnico di Milano, Dipartimento di Chimica, Materiali e Ingegneria Chimica “Giulio Natta”, Milano, Italy
One big challenge for the food industry is to predict and optimize flavors. The Maillard reaction occurs in food matrices containing carbohydrates and proteins under specific operating conditions. The presented research couples thermal and kinetic modeling to the bread baking process, an ideal field to study this complex set of reactions responsible for many bread flavors. The thermal model ...
S. Durand[1,3], C. Dubois, P. Lafleur, V. Panchal, D. Park, D. Lepage, P. Paradis
École Polytechnique de Montréal, Montréal, QC, Canada
US Army ARDEC, Picatinny Arsenal, NJ, USA
General Dynamics OTS Canada Valleyfield, Valleyfield, QC, Canada
A novel propellant technology requires extruding two formulations with differential burning rates together as a multilayered propellant. This propellant is processed into a concentric cylinder configuration, in the form of slow-fast-slow with single perforation. The material uses different path lengths between the inner and outer sections of the die, both coming from the same pressure driven ...
Simulations of Scanning Electrochemical Microscopy Experiments in Pure Negative and Positive Feedback Mode with Ring Microelectrodes
J. Mauzeroll, M. Mayoral, and D. Fabre
Department of Chemistry, Université du Québec à Montréal, Montreal, Quebec, Canada
Scanning electrochemical microscopy (SECM) is a powerful tool recently developed for studying structures and processes in micrometer and submicrometer sized systems. It can probe electron, ion, and molecule transfers, and other reactions at solid-liquid, and liquid-liquid, interfaces . This versatility allows for the investigation of a wide variety of processes, from metal corrosion to metabolism ...
Weierstrass Institute for Applied Analysis and Stochastics (WIAS), Berlin, Germany
The Lévêque problem is an idealized simple situation concerning the influence of the boundary on the distribution of temperature or mass in Hagen-Poiseuille flow. Here, the performance of numerical solutions is examined for a range of Péclet numbers, spanning 11 orders of magnitude. We examine the Sherwood, resp. Nusselt numbers and confirm the cubic square rule for high flow ...
T. Wagner, and U. Peil
International Graduate School of Risk Management of Natural and Civilization Hazards on Buildings and Infrastructure, Braunschweig, Germany
Institute of Steel Structures, Technical University Braunschweig, Braunschweig, Germany
Hazardous for the transmission lines is not only the static ice load, but also the aerodynamic instability of iced cables. It can lead to large amplitude oscillations at low frequencies. Also, twisting due to asymmetrical iced cables may increase the fatigue rate. In extreme events, atmospheric icing can cause severe damage on towers and power lines, resulting in extensive electricity ...
S. Mitra, R. Naik, and A. Narain
Michigan Technological University, Houghton, MI, USA
The paper outlines a two-dimensional computational methodology and presents results for laminar/laminar condensing flows inside mm- scale ducts. The methodology has been developed using MATLAB/COMSOL platform and is currently capable of simulating film-wise condensation for steady and unsteady flows. The results obtained are shown to be in agreement with an independently developed ...
Aerodynamic Study For Air To Gas Leakage Reduction In A Typical Rotary Regenerative Air Preheater Of Coal-Fired Steam Generators
L. Ferravante, C. Zagano, and V. Marra
RSE S.p.A. - via Rubattino, Milano, Italy
COMSOL S.r.l. - Via Vittorio Emanuele II, Brescia, Italy
The present study relates to the reduction of the amount of air to gas leakage in a typical rotary regenerative air preheater of coal-fired steam generators, by means of computational thermo-fluid-dynamics. Due to the gaps, or clearances, required for rotation, there is a significant amount of leakage of the higher pressure air to the lower pressure gas stream. This paper presents a turbulent CFD ...
On The Purification Of Waste Waters Using Multi-Bore Filters: Simulation Of A Long-Term Filtration Stage
Dipartimento di Matematica U. Dini, Universita' di Firenze, Italy
We present the progress of the simulation activity we are carrying out within the PURIFAST LIFE+ project. We first present the model we formulated to describe the macroscopic effects of the filtration process taking place in a multi-bore filter, focusing on the fouling phenomenon. In membrane-based filters the fouling phenomenon is the major reason of a decreasing filtration efficiency. ...
A. Fadel, G. Fontana
Isoil Impianti, Albano S. Alessandro, Italy
Industrial applications of fluid mechanics can require to satisfy necessities as diverse as legal norms, optimization requirements and manufacturing constraints. Therefore a Computational Fluid Mechanics software often becomes a must in the development of new devices or the improvement of older ones. Besides the legalistic aspect (such as the European Pressure Equipment Directive), several steps ...
R. Sikorski, B. Chapman, T. Merrill
Rowan University, Glassboro, NJ, USA
A CFD cardiac catheter model was developed to determine the potential for blood hemolysis during administration of local therapeutic hypothermia using a CoolGuide catheter. In vivo animal studies have shown that mild hypothermia may reduce reperfusion injury often associated with heart attack. The CoolGuide Catheter System (CCS) delivers rapid local cooling through a cardiac catheter, reducing ...