研究開発におけるマルチフィジックスシミュレーションの具体例
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COMSOL コンファレンス 2020 論文集を見る
Multiphysics Modelling of Standing Column Well and Implementation of Heat Pumps Off-Loading Sequence
A fully coupled multiphysics model involving heat transfer and groundwater flow within a SCW and its surrounding ground was implemented in COMSOL Multiphysics 4.2a with MATLAB to simulate a 24-hour heating operation. The heat pumps were modeled using interpolation functions thereby ... 詳細を見る
Penetration of Moisture in a Solar Panel Edge Seal
Photovoltaic systems can degrade with moisture. The addition of an edge-seal containing a desiccant can reduce the amount of water reaching the interior. This report discusses the modeling of the water transport into the system to determine the amount of edge seal and desiccant ... 詳細を見る
Thermal Adversity in Solid-State Lighting
COMSOL Multiphysics is used to simulate natural convection and its impact on peak operating temperatures of solid-sate lighting in thermally adverse conditions. PDE modes in the general form are used in conjunction with a thin-surface conduction formulation in the weak form. COMSOL is ... 詳細を見る
Conjugate Heat Transfer
Quenching from high temperature by fluid flow has been analyzed; when no phase transformation occurs heat transfer is a function of conduction and convection. Flow conditions may lead to turbulent flow that affects the heat dissipation over the surface. Analysis of heat transfer with ... 詳細を見る
Numerical Simulation of Phonon Dispersion Relations for Phononic Crystals
In previous work, a two-dimensional (2D) model was carried out to simulate the phononic band structure of a phononic crystal with square lattice structure, but this model did not account for the out-of-plane phonon dispersions [1]. In fact, for 2D films used for coating materials, it is ... 詳細を見る
Thermal Model for Single Discharge EDM Process Using COMSOL Multiphysics
Electrical Discharge Machining (EDM) is a non-conventional process used for machining electrically conducting materials. In die sink-EDM, sparks are generated between tool and workpiece resulting in heating of both electrode surfaces and creating a melt pool of metal which leads to ... 詳細を見る
Turbulent Compressible Flow in a Slender Tube
Pressure-drop experiments were conducted for the turbulent, compressible flow of air in a small, slender tube, and modeled with COMSOL heat transfer module, and analytically. A scalar integration variable is introduced which integrates the mass velocity [kg/m²s] over the inlet area ... 詳細を見る
Advancements in Carbon Dioxide and Water Vapor Separations Using COMSOL
“NASA\'s Advanced Exploration Systems (AES) program is pioneering new approaches for rapidly developing prototype systems, demonstrating key capabilities, and validating operational concepts for future human missions beyond Earth orbit” [1]. Under the new Atmosphere Revitalization ... 詳細を見る
Using COMSOL to Estimate the Heat Losses of Composite Panels Undergoing Repairs Using Bayesian Inference
Composite repairs involve applying a prescribed heat flux which must be adjusted to account for heat losses. These losses must be estimated. Parameter estimation requires a knowledge of sensitivities. This is often done using finite differences. As shown in the figure, substantial errors ... 詳細を見る
Establishing Absorbed Dose Thresholds for Nonlinearities in Water Calorimetry
The technique of water calorimetry for primary-standard dosimetry of radiotherapy-level ionizing radiation is well established at national metrology institutes around the world, where such a direct realization of absorbed dose establishes the basis for calibrating instruments used for ... 詳細を見る