S. Khushrushahi, T.A. Hatton, M. Zahn
Massachusetts Institute of Technology, Cambridge, MA, USA
Magnetic separation of magnetic liquid phases/particles from non-magnetic liquid phases/particles are needed for applications such as cleaning up oil spills by separating oil and water liquid phases or separating magnetic materials from non-magnetic materials in biomedical and microfluidic applications. Magnetic fluids (also called ferrofluids), in a magnetic field, experience a magnetic force ...
Hydro-Mechanical Modelling of Infiltration Test for a Bentonite-Sand Mixture: Model Verification and Parameter Identification
M. Hasal, R. Hrtus, Z. Michalec, R. Blaheta
Institute of Geonics AS CR, Ostrava, Czech Republic
The first aim of our work is to create a hydro-mechanical model (HM) of unsaturated fluid flow in bentonite-sand mixture (BSM) MX-80. The second aim is to validate and calibrate the developed model by using the data from a laboratory infiltration test of BSM. The used multi-physics model combines Richards type unsaturated flow with diffusive vapour flow and (nonlinear) elastic response of the ...
A. I. Elzawawy , J. D. Freels , F. G. Curtis [2, 3],
 Vaughn College of Aeronautics and Technology, East Elmhurst, NY, USA
 Oak Ridge National Laboratory, Oak Ridge, TN, USA
 University of Tennessee, Knoxville, TN, USA
The high flow rate within the HFIR cooling water flow channel causes the fuel plates to deflect which in turn, changes the coolant flow characteristics. This nonlinear feedback loop between the coolant and the fuel plate is the focus of the present simulation of the fluid-solid interaction between the coolant flow and the fuel plates to accurately predict the plate’s deflection using the Fluid ...
E. Holzbecher , F. Sun ,
 German University of Technology in Oman, Muscat, Oman, Germany
 Georg-August-Universität, Göttingen, Germany
In boreholes nozzles have to be found advantageous to increase the infiltration rate of water into the subsurface ground. Studies and practice in the field shows that the infiltration of water into permeable aquifers can be improved, if the flow in the borehole is modified. Due to the nozzle the flow regime turns from linear to turbulent. CFD studies help to understand the physics of the ...
O. Chellaï , S. Alberti , I. Furno , T. Goodman , M. Baquero 
 Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, Suisse
In magnetically confined fusion devices, electron cyclotron resonance heating (80-170 GHz) is characterized by a local RF-power deposition at the electron cyclotron resonance . A mm-wave RF Gaussian beam is launched from a dedicated antenna and propagates through the highly turbulent scrape-off layer (SOL) at the edge of the confined plasma. Turbulence in the SOL is characterized by ...
J. Schillings , O. Doche , J. Deseure ,
 LEPMI, Grenoble, France
 SIMAP, Grenoble, France
The dependency of electrochemical processes performances on mass transfer is well-known. Electrolyte flow in the vicinity of electrodes surface can enhance reactions due to increased mass transfer. This flow can be generated by the production of a gaseous phase, leading to a natural bubble-driven convection flow. As a drawback, gas bubbles also modify electrodes active surface and the ...
I .F. Melikhov , A. S. Amosov , S. A. Chivilikhin ,
 Corning Scientific Center, Saint Petersburg, Russia
 ITMO University, Saint Petersburg, Russia
Ultrasonic levitation is a novel technology for contactless handing of various objects. It is already used in various manufacturing processes where it is important to keep untouched surface. In this paper we introduce a model of so-called near-field ultrasonic levitation which allows flying heights of the hundred-micron order. Our model computes air flow in the gap between a vibration source and ...
G. Mach , C. Sherif , U. Windberger , A. Gruber ,
 Vienna University of Technology, Cerebrovascular Research Group Vienna, Vienna, Austria
 Hospital Rudolfstiftung, Cerebrovascular Research Group Vienna, Vienna, Austria
 Medical University Vienna, Cerebrovascular Research Group Vienna, Vienna, Austria
Usually, when calculating the blood flow in cerebral arteries and intracranial aneurysms, blood is modeled as a Newtonian fluid, neglecting its shear-thinning behavior. Since flow diverting devices slow down the blood flow in the aneurysm sack, the accuracy of this assumption had to be reviewed. A Carreau Yasuda model is introduced as a non-Newtonian model for blood viscosity. CFD simulations of ...
A Preliminary Approach to the Neutronics of the Molten Salt Reactor by Means of COMSOL Multiphysics®
V. Memoli, A. Cammi, V. Di Marcello, and L. Luzzi
Nuclear Engineering Division, Department of Energy, Politecnico di Milano, Milano, Italy
The Molten Salt Reactor (MSR), proposed along with other five innovative concepts of fission nuclear reactor by the Generation IV International Forum (GIF-IV), represents a challenging task from the modeling perspective because of the strong coupling between neutronics and thermo-hydrodynamics due to liquid fuel circulation in the primary loop. In this paper COMSOL Multiphysics® is adopted to ...
P. Apell, S. Hjalmarsson, T. Lindberg, I. Wernström, Y. Tarakonov, A. Erichsen Andersson, M. Karlsteen
Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden
Sahlgrenska University Hospital, Department of Anesthesia, Surgery and Intensive Care, Göteborg, Sweden
Patients undergoing surgery are sensitive to infections. The operation staff may spread 10^4 particles per person per minute, of which ten percent are presumed bacteria-carrying. We visualize the influence of the personnel on the air and particle flows for the two most common ventilation systems in Swedish hospitals using Comsol Multiphysics with particle tracing.. The Laminar Air flow ...