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Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: CFD modelling of pressure and shear rate in torsionally vibrating structures using ANSYS CFX and COMSOL multiphysics
Authors: Brunner, Daniel
Khawaja, Hassan
Moatamedi, Moji
Boiger, Gernot Kurt
DOI: 10.21256/zhaw-4964
Published in: The International Journal of Multiphysics
Volume(Issue): 12
Issue: 4
Page(s): 349
Pages to: 358
Issue Date: Dec-2018
Publisher / Ed. Institution: International Society of Multiphysics
ISSN: 1750-9548
Language: English
Subjects: CFD model; Shear rate; ANSYS CFX; COMSOL; Torsional vibration; Viscosity measurement
Subject (DDC): 530: Physics
Abstract: This paper discusses numerical methodologies to simulate micro vibrations on a nontrivial torsionally oscillating structure. The torsional structure is the tip of a viscosity-density sensor using micro vibrations to measure the fluid properties. A 2D transient simulation of the fluid domain surrounding the tip of the sensor has been conducted in ANSYS CFX and COMSOL Multiphysics software. ANSYS CFX uses a frame of reference to induce the micro vibration whereas a moving wall approach is used in COMSOL Multiphysics for the full Navier-Stokes equation as well as their linearized form. The shear rate and pressure amplitude have been compared between the different numerical approaches. The obtained results show good agreement for both pressure and shear rate amplitudes in all models.
Fulltext version: Published version
License (according to publishing contract): CC BY 4.0: Attribution 4.0 International
Departement: School of Engineering
Organisational Unit: Institute of Computational Physics (ICP)
Appears in collections:Publikationen School of Engineering

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