Simulations of Heat and Mass Transport During Biomass Conversion Processes Using 3D Biomass Particle Models with Realistic Morphology and Resolved Microstructure - new
P. Ciesielski, M. Crowley, L. Thompson, B. Donohoe, D. Robichaud, A. Sanders, M. Nimlos, T. Foust
Biosciences Center, National Renewable Energy Laboratory, Golden, CO, USA
National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, USA
Quantum Electronics & Photonics Division, National Institute of Standards & Technology, Boulder, CO, USA
Predictive simulations of biomass conversion processes will improve their technical performance and reduce economic uncertainty surrounding industrialization of biofuels production. The majority of present conversion simulations treat the biomass feedstock with simplifying assumptions that neglect important characteristics that are unique to biomass particles. These characteristics, including ...
C. Soares, N. Padoin, F. Montalvo, D. Cobra
Federal University of Santa Catarina, Florianópolis, SC, Brazil
CERTI Foundation, Florianópolis, SC, Brazil
Schistosoma mansoni parasites affect million people worldwide. The intensity of the infection can be evaluated by the number of eggs present in the stool of an infected individual. The application of the traditional methods has been regarded as impractical in developing areas and there is a continuous search for new techniques. In face of this scenario, a new method of diagnosis was explored in ...
M. Yang, A. Young, and B. Crittenden
Department of Chemical Engineering University of Bath, Bath, United Kingdom
A small batch stirred cell which is operated at temperatures up to 400 °C and pressures up to 30 bar is used to study fouling behaviors of selected crude oils. COMSOL Multiphysics package is used for the CFD (Computational Fluid Dynamics) and heat transfer modeling for this stirred cell system. The simulation results are validated against the measured temperature data at various axial ...
University College of Borås / Chalmers University of Technology
Hydraulic behaviour in an activated denitrifying sludge tank was investigated by fullscale tracer tests and computational fluid dynamics (CFD) modeling, using FEMLAB 3.1. A theoretical model of the hydraulic behavior in the tank was made with FEMLAB 3.1 using the 3D kε turbulence model. Outlet concentrations of the tracer from this model was also plotted in a RTD curve (figure 3). Curve ...
J.L.Wilson, and R. Dwivedi
New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA
Geothermally driven natural convection in enclosures is a ubiquitous process occurring in many physical environments such as caves, mines, etc. We have numerically simulated laminar and turbulent natural convection in isolated air-filled cavities, buried in a more conductive rock mass. We have modeled heat transfer using COMSOL's Convection and Conduction mode. To better understand the convective ...
Simulation of the Convective Heat Transfer and Working Temperature Field of a Photovoltaic Module Using COMSOL Multiphysics®
E. Ruiz-Reina and M. Sidrach-de-Cardona
Departamento de Física Aplicada II, Universidad de Málaga, Málaga, Spain
The aim of this work is the Finite Element Analysis (FEA), by using COMSOL Multiphysics®, of the convective heat transfer and working temperature field of a photovoltaic module under different wind conditions.
S. Quiniou, F. Lesage , V. Ventenat, and M.A. Latifi
 Laboratoire des Sciences du Génie Chimique, Nancy
 Centre de recherche Décathlon, Villeneuve d’Ascq
In this paper, an investigation of heat and mass transfer in fabrics used in the manufacture of comfortable sportswear is presented. It is based on a model which is described by partial differential equations representing the mass balance of free and adsorbed water and vapour and the heat balance in the fabric. The model involves several unknown physical and transfer parameters. Two ...
M.V. De Bonis[1,2], G. Altieri, and G. Ruocco[1,2]
 DITEC, Università degli studi della Basilicata, Potenza
Heat and mass transfer can be analyzed for conditions that may limit shelf-life. With this target, the purpose of the present work is the development of a general model which is applicable to a large variety of packaging configurations, food products and environmental conditions. To this end, COMSOL Multiphysics is exploited in a full 3D geometry.
C. Hurt, P. Angelo, R. Pevey
Department of Nuclear Engineering, University of Tennessee, Knoxville, TN, USA
Y-12 National Security Complex, Safety Analysis Engineering, Oak Ridge, TN, USA
Simulation of criticality accident transients offers the ability to confirm understanding of critical configurations, bound accident scenarios and aid comprehensive emergency planning. Computational ability to recreate excursion power histories in fissile solution is sought due to the predominance of solutions in process criticality accidents. Applicable solution transient physics methodologies ...
M. Divakaran, S. K. Gupta
Department of Chemical Engineering, Indian Institute of Science, Bangalore, Karnataka, India
Due to the coupling of foam flow with foam generation step, the earlier studies on foam flow have not led to consistent results. An increase in flow rate to obtain ?P vs. Q data changes the foam under investigation itself. The controlled experiments carried out earlier in our group show that ?P increases with flow rate as Q^2/3, a weaker dependence than that known for laminar flow or plug flow ...