Consultez les proceedings de la Conference COMSOL 2020
Investigation of the Flow Characteristics of an Aerosol Mixing Facility
The measurement and regulation of particulate matter to improve outside air quality advanced a lot over the last decades. This also made it necessary to develop primary standards for calibrating these measurement systems and in future the composition of relevant aerosols will be taken ... En savoir plus
Development of a Wideband Steerable Acoustic Metasurface with COMSOL®
The recent introduction of acoustic metamaterials and metasurfaces in the literature has triggered an tremendous interest in the scientific community, with their capability to achieve extraordinary acoustic properties for various acoustic and noise control applications, although limited ... En savoir plus
Fully Symmetrical Single-Suspension Electrodynamic Loudspeaker Using a Halbach Array
Invented at the end of the XIXth century, the electrodynamic loudspeaker has not much changed since then. Although the materials have greatly evolved, the geometry and the transduction principle have remained the same. However, in many applications, the bulkiness of the driver behind the ... En savoir plus
Alternative Implementation of a Porous Media Model for Simulating Drying of Heated Concrete
In a previous publication [1], a porous media model for simulating the pressure development in heated concrete has been presented, which is based on the classical formulation given in [2]. However this formulation has some drawbacks, which are addressed in a new implementation. The ... En savoir plus
Sound Field Reconstruction in Low-Frequency Room Acoustics: A Benchmark Study with Simulation
When it comes to room acoustic design, it is of paramount importance to be able to assess the sound field distribution inside a room, in order to identify and optimally locate the corrective measures. Generally, an accurate depiction of the sound field would result in an impractically ... En savoir plus
Solar Radiation Effects on the Epoxy Adhesive Temperature Used to Bond CFRP to Concrete Beams
The service temperature of epoxy-based adhesive used for structural strengthening of civil structures such as road bridges is an important issue and has to be taken into account when, for example, bonded CFRPs(Carbon Fiber Reinforced Polymer) strips are exposed to solar radiation and ... En savoir plus
Modeling of High-Speed PCB-Interconnects, Vias and Connectors for the Estimation of SI-Losses
Estimation of both single-ended (SE) and differential-pair (DP) impedances of high-speed PCB-traces/interconnects, vias and connectors is very important for the high-speed PCB (layout) design. This is because, the mismatch in line-impedances/improper line-termination results in a ... En savoir plus
Tunable Flat-Plate Absorber Design for Active Sound Absorption
Noise reduction at low frequencies is a major issue in many workspaces and indoor public places. Unlike mid- and high-frequency noise, low frequency noise is less attenuated by using conventional sound absorbing materials. This communication proposes an electro-mechano-acoustic absorber ... En savoir plus
Investigating a Tensor Formulation to describe the Magnetic Structure of Soft Magnetic Materials
Most of existing material representations [1], even including the dynamic hysteresis and iron losses [2], ignore local microscopic non-uniformities. These concern the magnetic structure (domains and walls [3]) and are mainly due to surface effects, anisotropy and exchange [4]. One ... En savoir plus
CFD Based Optimisation of a Laboratory Scale Silo
The flow simulation of solid, particulate materials is still challenging, even though estimations show that three-quarters of products and raw materials are present as granules form in the industry. We can think of grain in the agriculture, raw materials of the glass industry, granulated ... En savoir plus