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Title
  • en Direct measurement of fluid force on a particle in liquid by telemetry system
Creator
    • en Kobayashi, Yosuke
    • en Sawano, Takanori
    • en Noguchi, Emi
Accessrights open access
Subject
  • Other en Liquid-solid flow
  • Other en Particle
  • Other en Fluid force
  • Other en Teremetry system
  • Other en Sedimentation
  • NDC 547
Description
  • Abstract en For real-time measurement of the fluid force acting on a particle which moves freely in liquid, we have made a "sensor particle" with a built-in wireless sensor. The sensor particle contains a 3-axis acceleration sensor, 3-axis magnetometer, microcomputer, wireless module and cells. The MEMS acceleration sensor detects the gravitational acceleration in addition to the dynamic acceleration of particle. In order to remove the gravity from acceleration signals, we applied the external magnetic field which is oriented in the same direction as the gravity field. The 3-axis magnetometer detects the direction of external magnetic field and consequently we can remove gravitational acceleration from the sensor signals with arbitrary attitude of particle. A preliminary experiment was performed for checking the accuracy of the measurement system. Firstly we measured the force acting on a settling particle toward a solid wall in liquid. The obtained signals of acceleration (force divided by mass) agrees well with the theoretical prediction of particle motion in liquid for each instant of time. The sensor particle also detects the lubrication force which is exerted on particle for a very short time when it comes close to the wall. Moreover, we applied our system to the gravitational settling of the particle assemblage and detected the fluid force acting on a particle in multi-particle system.
Publisher en Elsevier
Date
    Issued2011-10
Language
  • eng
Resource Type journal article
Version Type AM
Identifier HDL http://hdl.handle.net/2115/47196
Relation
  • isVersionOf DOI https://doi.org/10.1016/j.ijmultiphaseflow.2011.06.010
Journal
    • PISSN 0301-9322
      • en International Journal of Multiphase Flow
      • Volume Number37 Issue Number8 Page Start898 Page End905
File
Oaidate 2023-07-26