The simulation of heat and moisture transfer represents an essential resource in designing energy efficient buildings. In this paper a time-dependent wall model, consisting of several homogeneous domains, with third-type boundary conditions imposed on the surfaces, is implemented in the COMSOL Multiphysics environment. Temperature and moisture content is calculated inside the construction for d...

Direct drive wind turbine generators are gaining importance for light weight, compact design in wind power generation. A new design approach of superconducting wind generator having both axial and radial air gaps between stator and superconducting rotor winding is selected for this simulation work. This paper deals with the simulation of magnetic flux distribution in stator and rotor coil of th...

This paper describes the Virtual Prototype of a Dielectric Window (DW) for High Power Microwave Vacuum Tubes and Linear Accelerators (LINAC). Design formulas are provided and Computer Aided Design techniques based on COMSOL Multiphysics are proposed. The virtual prototype considers the Thermo-mechanical effects due to the joule effect induced by the power which crosses the DW and the Thermal co...

Optimization calculations are currently an actual and in-demand direction of computer-aided design. It allows not only the identification future characteristics object, but also implementation its exact model using a set various optimization algorithms. The advent digital modeling has significantly facilitated approach to methods. Many software systems equipped with capabilities for calculating...

As energy can neither be created nor be destroyed but can be transformed from one form to other form, depending on application. In some cases energy released/ absorbed in any reaction sometimes will alter the process parameters and cause disturbance in normal flow of operation. This effect has its impact even in fundamental wave propagation properties and results in introduction of unwanted noi...

Organogenesis is a highly dynamic process that is tightly regulated during embryogenesis. Many of the individual regulatory components, such as signaling molecules and their receptors, as well as their regulatory interactions have been identified in experiments. However, an integrative mechanistic understanding of the regulatory network is missing [1]. In a series of papers on simulating organo...

Infrared spectroscopy can be used to identify and quantify individual (bio)chemical species within complex mixtures provided the spectroscopic fingerprints are strong enough. It is often the case, however, that the characteristic fingerprints are concealed by the much stronger absorptions of the most concentrated species. For example, in the case of blood serum, the very strong absorptions of p...

We present an easy-to-use toolbox for the automated generation of reduced-order mixed-level models for the evaluation of squeeze-film damping in microelectromechanical systems. The toolbox is programmed in JAVA and heavily exploits the functionality provided by the COMSOL API. The results obtained from mixed-level model simulation performed in COMSOL Multiphysics agree very well with experiment...