B. Agasanapura, C. Nesbitt, and M. Misra
Chemical and Metallurgical Engineering, University of Nevada, Reno, Nevada, USA
In the present work, transport and adsorption of contaminants (lead, cesium) on loamy desert soil was modeled using the Finite Element Method (FEM). The Advective dispersion reaction mechanism was employed to describe the contaminant transport in soil medium. A partial differential equation (PDE) obtained from unsteady mass balance was developed using convective diffusion, solute adsorption, and ...
T. Bjornara, and E. Aker
NGI, Oslo, Norway
Various types of equation system formulations for modeling two-phase flow in porous media using the finite element method have been investigated. These allow for equation manipulation such that the main differences between the formulations are the dependent variables that are solved for. Here we have tested five different formulations for 2D simulations and one for 1D; the Buckley-Leverett ...
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 ...
J. Xi, Q. M. Mohamad, Y. E. Yuan, J. Rohlinger
Mechanical and Biomedical Engineering, Central Michigan University, Mount Pleasant, MI, USA
1. Flow-induced uvula deformation considerably altered the flow dynamics inside the nose. 2. For a weak soft palate, complete flow occlusion can occur (sleep apnea). 3. Vibration of the airway structures is crucial to better understand snoring generation mechanisms and breathing-related disorders.
NASA Marshall Space Flight Center / Jacobs ESSSA Group, Huntsville, AL, USA
Combustion instability in solid rocket motors and liquid engines has long been a subject of concern. Recent advances in energy based modeling of combustion instabilities require accurate determination of acoustic frequencies and mode-shapes. Of particular interest is the acoustic mean flow interactions within the converging section of a rocket nozzle, where gradients of pressure, density, and ...
N.D. Barnett, and E. Gutirrez-Miravete
General Dynamics-Electric Boat, Kingston, Rhode Island, USA
Rensselaer at Hartford, Hartford, Connecticut, USA
This paper report on a study of the hydrodynamics of skimboards and surfboards using the computational fluid dynamics (CFD) module in COMSOL. The study analyzes the flow in a thin water layer underneath a skim board in a 2-D Cartesian coordinate. Three different sets of boundary conditions were employed and one of them produced the best agreement with previous findings.
3M Canada Company, London, Ontario, Canada
The collection efficiency of aerosol particles on a ribbon in a turbulent flow is analyzed using COMSOL Multiphysics. The flow field is solved using Chemical Engineering module and particle tracing plots are obtained using equations of motion including Khan and Richardson drag force. A MATLAB script is used to count the captured particles on the ribbon and determine the capture efficiency with ...
N. Bianco, R. Capuano, W.K.S. Chiu, S. Cunsolo, V. Naso, M. Oliviero
DETEC, Università degli Studi Federico II, Napoli, Italy
Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA
A conjugate conductive-convective-radiative discrete model useful for the study and the simulation of heat transfer in a ceramic or metallic foam is presented. A Generation-based Technique is used for the foam representation, using the Weaire-Phelan structure and heat transfer is studied using the COMSOL Multiphysics. The computational domain is made up by a single cell and a fictitious inlet ...
E. Tempfli, F.P. Schmidt
Karlsruhe Institute of Technology (KIT), Fluid Machinery (FSM), Karlsruhe, Germany
The paper investigates the hydrodynamic performance of a hierarchical parallel channel network for the objective of optimal thermal coupling to heat released in the adsorption processes, as in adsorption heat pumps. More specifically, the uniformity of the fluid flow over the network is improved by optimizing the topology of the manifold channels of the two hierarchical levels. For this purpose a ...
A.W.M. van Schijndel and H.L. Schellen
Eindhoven University of Technology, Eindhoven, The Netherlands
This paper presents the use of the multiphysics package COMSOL for teaching heat and moisture transport modeling in the research area of building physics. It includes a description on how COMSOL works and six exercises with 2D, 3D, steady state and transient models. It is concluded that COMSOL is a very useful tool for this kind of engineering education. Especially, the abstraction level of ...