![]() Among the potential uses of this usability feature, explains the company, would be the ability to create a reusable model method that generates a complicated array of geometric objects to expand on the standard functionality of the Model Builder. Users can now simply record a set of operations, like a macro, and use the resulting method while setting up or solving a model. With the introduction of model methods in version 5.3, COMSOL says that it is easy to automate repetitive operations directly in the Model Builder. This COMSOL 5.3 image depicts a vibration and noise analysis of a 5-speed synchromesh gearbox inside a vehicle with a manual transmission. A new option for automatic geometry defeaturing through virtual geometry operations is now also available. ![]() Users working with models and geometry requiring the use of several element types should benefit from the automatic generation of pyramidal elements to handle the transition between swept, hexahedral, prismatic and tetrahedral meshes, says COMSOL. Further, turbulent flow modeling is said to now offer more robust computations with automatic treatment of walls, a feature that blends high-fidelity, low-Reynolds formulation with wall functions.īeginning with version 5.3 the Model Builder now more rapidly deals with geometry and mesh operations for models with large arrays and complicated solid operations in 3D. Image courtesy of COMSOL Inc.įor handling large CFD models the new AMG solver requires only a single mesh level and is now the default option for many fluid flow and transport phenomena interfaces. COMSOL says that the simulation process is more robust for problems such as fluid-structure interaction as shown in the solar panel simulation here. Users can quickly set up simulations that combine wires, beams, surfaces and solids in the same model, says COMSOL, adding that users can combine BEM and finite element (FE) methods in multiphysics simulations.ĬOMSOL 5.3 introduces a new Algebraic Multigrid (AMG) solver for CFD (computational fluid dynamics) analyses, which allows for solving large fluid flow problems with a single mesh level. Additionally, geometry and mesh performance improvements from automatic pyramid element transitions and automatic removal of geometric details are reported.ĬOMSOL explains that for modeling electrostatics and corrosion effects, version 5.3's new BEM capabilities will enable users to simulate models with infinite domains and voids. CAD import is now up to 5x faster, while loading and saving MPH (COMSOL Multiphysics) formatted files see a 2x to 10x performance boost. By way of example, COMSOL reports potential speedups for such operations as selections of domains, boundaries, edges and points, as well as OpenGL rendering range up to 10x. Image courtesy of COMSOL Inc.Ĭompared with a very recent edition, existing users could see COMSOL version 5.3 handle large models anywhere from 2x to 10x faster depending on the details of the model, according to the company. COMSOL 5.3's new Boundary Element Method (BEM) functionality was used to create this simulation. Finally, a calibration plot was obtained based on the simulation results of the proposed nanochip as phenol biosensor with the following equation I (nA) = 0.1497 C (μM)–0.3521 and a linear range of 20.0–150.0 μM.This image shows a numerical simulation of the electrochemical potential distribution along an oil rig in sea water. Also, o-quinone concentration gradients were determined at the electrode surface, which can be used to estimate the thickness of the diffusion layer. Then, using simulation results, chronoamperograms were drawn for the nanochip biosensors with different heights. By comparing the cyclic voltammograms from the simulation and experimental results, the heterogeneous rate constant, k°, and the transfer coefficient, α, were calculated 0.02 cm s -1 and 0.5, respectively. The obtained results from simulation were compared with the experimental results to verify the validity of the model. The cathodic and anodic peak potentials for o-quinone/catechol redox couple are obtained experimentally 255 and 310 mV, respectively. The diffusion coefficient of o-quinone was obtained 2.17 × 10 −6 cm 2 s -1 based on experimental chronoamperograms. ![]() The oxidation rate of phenol to o-quinone was predicted by the developed model based on Michaelis-Menten equation. In order to investigate the o-quinone enzymatic production and its electrochemical behavior, a 2-D model was developed for a nanochip biosensor in COMSOL Multiphysics. Horseradish peroxidase enzyme selectively oxidizes phenol to o-quinone that can be reduced electrochemically to catechol and generating a current response which is directly proportional to phenol concentration.
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