Particles falling through viscoelastic non-Newtonian flows in a horizontal rectangular channel analyzed with PIV and PTV techniques

Khatibi, Milad; Time, Rune W.; Rabenjafimanantsoa, Herimonja A.

doi:10.1016/j.jnnfm.2016.08.004

Cited by 10 publications

(1 citation statement)

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“…In addition, Visitskii [ 21 ] depicted the settlement motion of solid spherical particles in a static viscous fluid. Khatibi [ 22 ] investigated particles of different diameters falling in rectangular water channels through particle tracking velocimetry (PTV). Ning [ 23 ] used the digital holography method to study the vertical motion characteristics of tiny spherical particles in the ocean, where it was found that the speed of particles is affected by the diameter, density, and viscosity of the fluid.…”

Section: Introductionmentioning

confidence: 99%

A Lubricating Oil Condition Monitoring System Based on Wear Particle Kinematic Analysis in Microfluid for Intelligent Aeroengine

Liu

Zuo

et al. 2021

Micromachines

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Lubricating oil monitoring technology is a commonly used method in aeroengine condition monitoring, which includes particle counting technology, as well as spectral and ferrography technology in offline monitoring. However, these technologies only analyze the characteristics of wear particles and rely on physical and chemical analysis techniques to monitor the oil quality. In order to further advance offline monitoring technology, this paper explores the potential role of differences in wear particle kinematic characteristics in recognizing changes in wear particle diameter and oil viscosity. Firstly, a kinematic force analysis of the wear particles in the microfluid was carried out. Accordingly, a microfluidic channel conducive to observing the movement characteristics of particles was designed. Then, the wear particle kinematic analysis system (WKAS) was designed and fabricated. Secondly, a real-time tracking velocity measurement algorithm was developed by using the Gaussian mixture model (GMM) and the blob-tracking algorithm. Lastly, the WKAS was applied to a pin–disc tester, and the experimental results show that there is a corresponding relationship between the velocity of the particles and their diameter and the oil viscosity. Therefore, WKAS provides a new research idea for intelligent aeroengine lubricating oil monitoring technology. Future work is needed to establish a quantitative relationship between wear particle velocity and particle diameter, density, and oil viscosity.

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Section: Introductionmentioning

confidence: 99%