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Suchbegriff:

Hydrophone Acoustic Receiver Modeling: Turbulent Flow Modeling and Acoustic Analysis

D. Groulx[1], A. Bharath[1], S. Campbell[1]
[1]Department of Mechanical Engineering, Dalhousie University, Halifax, NS, Canada

The field of underwater acoustics research is constantly growing with the ongoing improvement of acoustic measuring techniques. An acoustic hydrophone receiver is a passive listening device which is widely used in biological research and sonar technology. The hydrophone however suffers ... Mehr lesen

Entropic Evaluation of Dean Flow Micromixers

P. S. Fodor[1], M. Kaufman[1]
[1]Cleveland State University, Cleveland, OH, USA

In this work we investigate computationally the use of spiral channels at Reynolds numbers from 25 to 900 as a mixing structure (Figure 1) using COMSOL Multiphysics, the CFD Module, and the Chemical Species Transport physics. In this system, the centrifugal forces experienced by the ... Mehr lesen

Handling Tessellated Free Shape Objects with a Morphing Mesh Procedure in COMSOL Multiphysics^®

P. Franciosa[1] and S. Gerbino[2]
[1]Faculty of Engineering, University of Naples Federico II, Napoli, Italy
[2]Faculty of Engineering, University of Molise, Campobasso, Italy

Tessellated models are more and more used in several engineering fields. The need to use such models to quickly perform computer simulations related to coupled physical phenomena, implies the use of dedicated software, allowing to solve, into an integrated environment, multiphysics ... Mehr lesen

Design and Simulation of a Microscale Magnetophoretic Device for the Separation of Nucleated Fetal Red Blood Cells from Maternal Blood

G. Schiavone[1], D.M. Kavanagh[2], and M.P.Y Desmulliez[2]

[1]Politecnico di Torino, Torino, Italy
[2]MIcroSystems Engineering Centre, School of Engineering & Physical Sciences, Heriot-Watt University, Edinburgh, Scotland, United Kingdom

Intense research has been carried out into methods that aim at harvesting fetal cells from maternal blood as substitutes to amniocentesis and chorionic villus sampling. This work focuses on the separation of fetal nucleated red blood cells from the maternal circulation based on their ... Mehr lesen

Modeling a Novel Shallow Ground Heat Exchanger

M. Bottarelli[1], M. Bortoloni[1]
[1]Università degli Studi di Ferrara, Dipartimento di Architettura, Ferrara, Italia

Ground Heat Exchangers (GHXs) are rarely installed horizontally in linked ground source heat pumps used for space conditioning, because their energetic performance is lower than in the vertical solution. However, the horizontal one holds several advantages: it is easy to carry out and ... Mehr lesen

Modeling and Simulation of the Rapid and Automated Measurement of Biofuel Blending in a Microfluidic Device under Pressure Driven Flow using COMSOL Multiphysics®

Sanket Goel[1], Venkateswaran PS[1], Rahul Prajesh[2], Ajay Agarwal[2]
[1]University of Petroleum & Energy Studies, Bidholi, Prem Nagar, Dehradun, India
[2]CSIR - Central Electronics Engineering Research Institute,(CSIR-CEERI) Pilani, India

• Real-time detection and monitoring of bio-fuel blend-ratio and adulterated automobile fuels by a reproducible micro-fabrication process in a cost-and-time efficient manner. • COMSOL Multiphysics® simulations and modelling of Viscosity based Laminar Flow inside a Y-shaped Micro ... Mehr lesen

Simulation of Gravitational Instability During CO2 Absorption in a NaHCO3 ...

Simulation of Gravitational Instability During CO₂ Absorption in a NaHCO₃/Na₂CO₃ Solution

C. Wylock[1], A. Rednikov[1], B. Haut[1], P. Colinet[1]
[1]Université Libre de Bruxelles (ULB), Transfers, Interfaces and Processes (TIPs), Brussels, Belgium

This work deals with the modeling and the numerical simulation of the CO2 absorption, coupled with a chemical reaction, in an initially quiescent aqueous solution of sodium carbonate (Na2CO3) and bicarbonate (NaHCO3), inside a Hele-Shaw cell. In our Hele-Shaw cell, the liquid fills ... Mehr lesen

Using Computational Fluid Dynamics Model to Predict Changes in Velocity properties in Stented Carotid Artery

S. Vaidehi, and A. Ritter
Stevens Institute of Technolgy, Hoboken, NJ, USA

Atherosclerosis is a disease that narrows, thickens, hardens and restructures a blood vessel due to substantial plaque deposit. In the Carotid Artery, the decision to treat using endarterectomy and stenting is determined by the velocity as measured by Doppler flow in the common Carotid ... Mehr lesen

Some Benchmark Simulations for Flash Flood Modeling

E. Holzbecher [1], A. Hadidi [1],
[1] German University of Technology in Oman, Muscat, Oman

Flash floods are sudden and mostly destructive rushes of water down narrow gullies or over sloping surfaces. They are mostly caused by heavy rainfall in the upstream watershed. They may also appear as result of catastrophic events as dam or levee breaks, or mudslides or debris flow. ... Mehr lesen

Using COMSOL Multiphysics^® for Biomechanical Analysis of Stent Technology in Cerebral Aneurysms

J. Rasmussen[1], M.S. Enevoldsen[1], J. Thyregod[2], and K-A. Henneberg[1]
[1]Department of Electrical Engineering, Technical University of Denmark, Kgs. Lyngby, Denmark
[2]COOK Medical Europe, Bjaeverskov, Denmark

This work presents new Fluid-Structure Interaction (FSI) models in both 2D and 3D of the effect of using vascular stents as treatment of cerebral berry aneurysms. The stent is positioned inside the cerebral artery covering the neck of the aneurysm. The stent is expected to alter the ... Mehr lesen

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