Consultez les proceedings de la Conference COMSOL 2020
Acoustic Scattering through a Circular Orifice in Low Mach Number Flow
The acoustic scattering through a circular orifice plate in a duct with low Mach number flow (M=0.1) is computed using the Linearized Navier-Stokes physics interface of COMSOL Multiphysics®. The work by Kierkegaard et al. is extended to account for higher order acoustic modes, i.e., ... En savoir plus
Dynamic Saturation of TiZrV Layer of Non-Evaporable Getters (NEG) Chamber
Non-evaporable getters (NEG) chambers are 316L vacuum chambers coated with a TiZrV layer, widely used in accelerator systems. This particular alloy works, when thermally activated, as a linear pump for almost all gas species inside the chamber: molecules are adsorbed on the surface or ... En savoir plus
Implementation of a Thermo-Hydrodynamic Model to Predict the Morton Effect
In this paper, the "Morton Effect" is analyzed. This phenomenon is a particular kind of rotor instability due to non-uniform journal bearing heating. In this paper, an overview of the previous works has been done. After this preliminary study, a specific approach suggested by the ... En savoir plus
Numerical Study of Hyporheic Flow across Bedforms of Different Type
Despite the traditional separation between the studies of surface water and groundwater flows, it has been long recognized that rivers and aquifers are strongly connected and that their interaction gives rise to a continuous exchange of water and solutes. The volume within the porous ... En savoir plus
An Application Built with the COMSOL Multiphysics® Software for Managing Computational Sequences in Thermal Fluid Applications
An app built with the COMSOL Multiphysics® software allows both expert and beginner users to carry out parametric simulations thanks to flexible and user-friendly customized interfaces. Many people, with or without expertise in numerical analysis, can now access, exploit and share ... En savoir plus
Modeling Voltammetry of a Rotating Disk Electrode
In this work we report a numerical model of a Rotating Disk Electrode (RDE) voltammetry in a finite size domain. Thus, explaining the discrepancy of the diffusion coefficient obtained from the experimental rotating speed, with respect to the literature data. We achieved a very good ... En savoir plus
Computational Analysis of Hydrodynamics and Light Distribution in Algal Photo-Bioreactors
Microalgae can be directly used in health food or as biofilters for waste water treatment. They also have numerous commercial applications in cosmetics, aquaculture and chemical industry as a source of highly valuable molecules, e.g., polyunsaturated fatty acids, and they are ... En savoir plus
A Modified Koutecký-Levich Equation for the Analysis of Electrochemical Flow Cells with Complex Geometries
Electrochemical flow cells have found widespread use in analytical chemistry due to their short response time, high sensitivity and selectivity. The geometrical flexibility and therefore, the ease of coupling the electrochemical to other experimental techniques has attracted considerable ... En savoir plus
Simulating Organogenesis with COMSOL Multiphysics® software: Phase-Field Based Simulations of Embryonic Lung Branching Morphogenesis
While many biological details in organogenesis have been uncovered, fundamental questions regarding the control of growth and shape during lung and kidney morphogenesis remain unsolved. Using mathematical models, we recently showed that only ligand-receptor based Turing models ... En savoir plus
Melt Homogenization Improvement By Optimizing the Rotation Profile
During the last decades, mid-IR (3-12µm) laser sources have attracted attention due to their potential applications in different fields like infrared counter-measures (e.g: missile jamming) and remote chemical sensing. In this context, Onera has been working on the development of non ... En savoir plus