|Publication type:||Conference other|
|Type of review:||Peer review (abstract)|
|Title:||Investigation of modal distortion and temporal effects in torsional resonators|
Khawaja, H. A.
Boiger, Gernot Kurt
|Conference details:||International Conference of Multiphysics, Dubai, UAE, 14-15 December 2019|
|Publisher / Ed. Institution:||International Society of Multiphysics|
|Subjects:||Zorsional resonators; Viscosity measurement; Temporal effects; Fluiddynamics|
|Subject (DDC):||530: Physics|
|Abstract:||Monitoring fluid properties such as viscosity and density is crucial in many industrial processes. Sensors based on mechanical resonators allow monitoring the viscosity online, which enables a fast measurement times in order to maintain process quality and stability. To develop these sensors, accurate models are needed to optimize design and to gain a better understanding of their functioning. In a previous study, a tubular sensor has been investigated. It consists of a thin-walled tube which is excited in torsional vibrations. Experiments have been conducted and compared with a steady state model of the fluid-solid interactions that determine the behavior of the sensor. These agreed well with measured characteristics of the sensor ta low viscosities, but showed a significant deviation at high viscosities. It is not clear whether this was due to modal distortion or to temporal effects. This study investigates the cause of these deviations at high viscosities by means of numerical simulations. This more detailed model accounts for temporal and well as fluid-structure interactions. Simulations are conducted in LS-DYNA and MATLAB to model the fluid-structure interaction to determine the impact of the fluid on the torsional mode as well as to include temporal effects.|
|Fulltext version:||Published version|
|License (according to publishing contract):||Licence according to publishing contract|
|Departement:||School of Engineering|
|Organisational Unit:||Institute of Computational Physics (ICP)|
|Appears in collections:||Publikationen School of Engineering|
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