Modelling of Reactive Non-Isothermal Mixture Flow and its Simulation in COMSOL Multiphysics® Software - new
V. Orava[1,2], O. Soucek, P. Cedula
Charles University in Prague, Prague, Czech Republic
Zurich University of Applied Sciences, Winterthur, Switzerland
I introduce a model of fluidized reactor which, in presence of heterogeneous platinum-based catalyst, decomposes liquid formic acid producing gaseous mixture of carbon dioxide and hydrogen as the product. I treat the physical system as a (Class II) mixture of four constituents - namely formic acid (FA), Platinum micro-pellets (Pt), carbon dioxide (CO_2) and hydrogen (H_2) - which can be, without ...
V. S. P. Rajesh
St. Mary's Group of Institutions, Jawaharlal Nehru Technological University, Hyderabad, Telangana, India
Fluid and structure Interaction analysis can be applied to versatile fields of engineering applications, helps in understanding the affects of one material on other, thereby reducing the effect of physical parameters like nonlinear response, vibration in flow channel etc. Rapid development of technology led to the application of this Fluid-Structure Interaction (FSI) in Microfluidics based ...
The Gillette Company
The ability of an industrial mixing tank to homogenize its contents decays rapidly as the Reynolds number is decreased in the transitional regime and approaches the laminar regime. A model of a mixing tank was developed using FEMLAB and using a CFD technique known as momentum source modelling. The model predictions of velocity components agree well with LDA measurements. Decolorization ...
H. van Halewijn
Eindhoven, The Netherlands
For the educational program of Fluid Dynamics at the Fontys Hogeshool of Applied Physics, a wind tunnel was developed for tests of flow profiles of objects, such as a ball, cube or plate. Students are expected to measure the air resistance of a variety of objects, and verify the measurements with the turbulent CFD module of COMSOL. The measurements and the COMSOL simulations match nicely, and ...
S. Hoyer, U. Exner, M. Voorn, A. Rath
Department of Geodynamics and Sedimentology, University of Vienna, Austria
Museum of Natural History, Vienna, Austria
OMV ESG-D Production Geology, Vienna, Austria
Knowledge on flow behavior in fractured reservoir rocks is of great interest in petroleum engineering as well as for geothermal assets. Due to the big difference of magnitude (fracture aperture: ~?m, lateral extension of reservoirs ~km), modeling of discrete fracture flow is not practicable on the reservoir scale, so a Darcy (or Brinkman) approximation has to be found. The key task is to find ...
N. Delmonte, F. Giuliani, P. Cova
Dipartimento di Ingegneria dell'Informazione, Università degli Studi di Parma, Parma, Italy
Introduction: Power electronic converters such as those for High Energy Physics Experiments (HEPEs) must operate in thermally hostile environment. Heat generated by electronics components must be conveniently dissipated to ensure electrical performances and improve reliability. Due to the high power density, the presence of closed environments, and the requirement of non-thermal interaction with ...
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 ...
A. Travis, K. Ekici, J. Freels
The University of Tennessee, Knoxville, TN, USA
Oak Ridge National Laboratory, Oak Ridge, TN, USA
A model utilizing interdimensional variable coupling is presented for simulating the thermal hydraulic interactions of the High Flux Isotope Reactor (HFIR) core at Oak Ridge National Laboratory (ORNL). The model’s domain consists of a three-dimensional fuel plate and a two-dimensional coolant channel slice. In simplifying the coolant channel, the computational cost and solution time are both ...
Simulation of Formwork Filling by Cement Fluid: The Effect of the Formwork Structure on Yield-stress Fluid
J. Park, N. Banerjee, M. Alfi, D. Feys
Missouri University of Science & Technology, Rolla, MO, USA
The flow of self-consolidating concrete (SCC) in formwork fillings was simulated as the flow of a single phase yield-stress fluid between two infinite plates by COMSOL Multiphysics®. The flow of SCC with varied rheological properties (yield stress and plastic viscosity) was verified in formworks with different configurations of reinforcement (rebars). Minimum and maximum limits of SCC ...
Ritsumeikan University, Shiga, Japan
The vertical axis wind turbine design depicted in (Fig.1) is widely considered a wind turbine of a wind power generation system because it can be easily miniaturized, it generates low noise, and it rotates regardless of wind direction. The vertical axis wind turbine has, however, low rotation performance when compared with that of a horizontal axis wind turbine. Therefore, we need to improve the ...