Sehen Sie, wie die Multiphysik-Simulation in Forschung und Entwicklung eingesetzt wird
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The transient behavior of the thermal resistance of single and double U-tube borehole heat exchangers (BHEs) is investigated numerically by means of COMSOL Multiphysics® software with reference to the 2D cross section of usually employed BHEs. The study is performed in a dimensionless ... Mehr lesen
This paper describes the Virtual Prototype of a Dielectric Window or High Power Microwave Vacuum Tubes and Linear Accelerators. Design formulas are provided and Computer Aided Design techniques based on COMSOL Multiphysics® software are proposed. The virtual prototype considers the ... Mehr lesen
Magneto-Hydrodynamic (MHD) power generation systems were originally investigated starting from the fact that the interaction of a plasma with a magnetic field must take place at much higher temperatures than could be observed in a mechanical turbine. The main problems of traditional MHD ... Mehr lesen
A model of a cell counter sensor based on Impedance Spectroscopy (IS) has been implemented in COMSOL Multiphysics. The cell counter is a silicon-based microdevice consisting in 3D electrodes placed in a wide microchannel: cells flow in the microchannel through the electrodes to be ... Mehr lesen
In this work an innovative wind power generation in urban areas is proposed. The generation system substitutes the roof of the building and it consists of a static part, the stator, and a moving part, called impeller, which is a centripetal turbine with vertical axis of rotation. Since ... Mehr lesen
Stationary flow configurations in curved pipes constitute an important subject from both the theoretical and the practical point of view. A typical application concerns the calculation of secondary flow effects on the thermal efficiency of heat exchangers. Motivated by a similar problem, ... Mehr lesen
Ground freezing techniques using liquid nitrogen are commonly used in order to increase the mechanical properties of the soils. This article presents a new ground heat exchanger using aluminum to increase the effective radius of the heat exchanger. Simulation results indicate that the ... Mehr lesen
Cryotherapy and thermotherapy are common methods of treatment for acute injuries ranging from ankle sprains to complex surgery. The idea behind such treatment is that a change in temperature will reduce pain and constrict fluctuations in blood flow at the targeted area. The purpose of ... Mehr lesen
A microfluidic thermal cycler for Polymerase Chain Reaction (PCR) has been modeled. A microliter sample is driven along the microchannel by a flow generated by means of electroosmotic micropumps, activated in sequence. Several multichannel pumps configurations have been separately ... Mehr lesen
Flow channel design in a PEM fuel cell plays a critical role for uniformly distributing reactants to the reaction sites and effectively removing product water to prevent flooding. Simplistic design and uniform reactant distribution make parallel channels a potential candidate for ... Mehr lesen