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Suchbegriff:

Dynamic Model for Catenary Mooring: Experimental Validation of the Wave Induced Load

L. Martinelli[1], A. Spiandorello[2], P. Ruol[3], and A. Lamberti[1]
[1]DICAM, Università di Bologna, Italy
[2]Civil Engineer, Italy
[3]IMAGE, Università di Padova, Italy

This paper will present a numerical model based on COMSOL Multiphysics suited to simulate the dynamic response of a catenary mooring (or a submarine cable). In general, mooring lines are subject to a direct wave load (e.g. drag, inertia) in addition to the movement of the vessel to ... Mehr lesen

Coupled Heat, Moisture and CFD Modeling in the Built Environment

K. Kompatscher [1], S. Kochen [1], A. M. W. van Schijndel [1], H. L. Schellen [1]
[1] Department of the Built Environment, Eindhoven University of Technology, Eindhoven, The Netherlands

Museum buildings strive for a stable indoor climate to reduce the risk of cultural object degradation. An incorrect temperature or relative humidity can induce or accelerate deterioration processes such as biological, chemical or mechanical degradation. In order to reduce these risks, ... Mehr lesen

Simulation of a Magnetophoretic Device for the Separation of Colloidal Particles in Magnetic Fluids

S.K. Fateen, and M. Magdi
Cairo University, Giza, Egypt

Magnetophoresis of non-magnetic particles is the induced motion of non-magnetic particles suspended in magnetic media on the application of a magnetic field gradient. Magnetophoresis can be used in special separation devices to separate colloidal particles based on their sizes. ... Mehr lesen

Early Stage Melt Ejection in Laser Percussion Drilling

T. Eppes[1]
[1]University of Hartford, Hartford, CT, USA

Laser percussion drilling is widely used in the aerospace industry to produce cooling holes in jet engine components. This process is a thermal, contact-free process which involves firing a sequence of focused optical pulses onto a target material [1-4]. During each optical pulse, the ... Mehr lesen

Numerical Investigation of a Time-dependent Magnetic Actuation Technique for Tagging Biomolecules with Magnetic Nanoparticles in a Microfluidic System

A. Munir, J. Wang, Z. Zhu, and H.S. Zhou
Worcester Polytechnic Institute, Worcester, MA, USA

The magnetic body forces that act on mono-dispersed magnetic nanoparticles (MNPs) tagged biomolecules in a microfluidic system can be efficiently used in various applications that involve separation and detection including DNA and protein analysis, bio-defense, drug delivery, and ... Mehr lesen

Variation of the Frost Boundary below Road and Railway Embankments in Permafrost Regions in Response to Solar Irradiation and Winds

N.I. Kömle[1] and W. Feng[2]
[1]Space Research Institute, Austrian Academy of Sciences, Graz, Austria
[2]State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute, Lanzhou, China

We present COMSOL solutions for a coupled gas flow and heat transfer problem, which occurs particularly when traffic pathways are constructed in high altitude and arctic regions, where the underground is frozen soil. To avoid melting of the frozen ground (which usually leads to ... Mehr lesen

Simulation of Incompressible Flow through Rhombohedric Pores

R. Viola[1][3], F. Zama[2], M.Tuller[3], and E. Mesini[1]

[1]DICMA, University of Bologna, Bologna, Italy
[2]Dep. of Mathematics, University of Bologna, Bologna, Italy
[3]Dep. of Soil, Water, and Environmental Science, University of Arizona, Arizona, USA

Advances in visualization and discretization of pore structures by means of Computed Tomography, and rapidly increasing computational capabilities, allow numerical modeling of pore-scale fluid flow based on the incompressible Navier-Stokes equations rather than using a macroscopic ... Mehr lesen

Multiphysics Process Simulation of the Electromagnetic-Supported High Power Laser Beam Welding of Austenitic Stainless Steel

M. Bachmann[1], V. Avilov[1], A. Gumenyuk[1], M. Rethmeier[1]
[1]BAM Federal Institute for Materials Research and Testing, Berlin, Germany

The application of an oscillating magnetic field on the high-power full-penetration laser beam welding process of a 20 mm thick stainless steel plate was numerically and experimentally investigated. In the simulations, three-dimensional heat transfer and fluid dynamics as well as ... Mehr lesen

Thermo-Fluidic Impulse Response and TOF Analysis of a Pulsed Hot Wire

O. Ecin, M. Malek, B. J. Hosticka, and A. Grabmaier
Chair for Electronic Components and Circuits
University of Duisburg-Esse
Duisburg, Germany

In this work the authors report on a CFD simulation of a pipe flow model. Fluid mechanics are here combined with heat transfer phenomena. To create a mathematical model of a pulsed hot wire system i.e., the thermo-fluidic impulse response of a pulsed hot wire, a simulation model is going ... Mehr lesen

Lowering of the Interstitial Fluid Pressure as a Result of Tissue Compliance Changes during High Intensity Focused Ultrasound Exposure: Insights from a Numerical Model

E. Sassaroli[1], B. O'Neill [1]
[1]The Methodist Hospital Research Institute, Houston, TX, USA

Interstitial fluid pressure (IFP) is elevated in tumors. Owing to this elevated IFP, the interstitial fluid velocity (IFV) is negligible throughout the tumor but significant near the tumor margin. Any therapeutic strategy that can lower IFP will improve drug convection within the tumor ... Mehr lesen

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