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Hydrodynamic analysis of fishlike robot swimming in the straight forward way

  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper investigates the three dimensional hydrodynamics of a fishlike robot swimming in the straight forward way under self-propulsion. The unsteady flow fields associated with swimming robot is computed by using Navier-Stokes equation. Both the user defined function and dynamic mesh technique are applied to track the robot motion. The results show that the mean magnitudes of net thrust force and net lift force approach to zero for one cycle. The variation trends of thrust force, swimming power and propulsive efficiency over time are in sine function. The computed flow fields clearly reveal the evolution of two pairs of pressure cores traveling along the robot as it swims. A positive pressure gradient around the tail is in competition with negative pressure gradient in the head; thrust forces is produced when the positive pressure gradient dominate the negative one. The findings help reveal the propulsive mechanism of the fishlike robot propulsion and benefit the fishlike robot design.

Original languageEnglish
Title of host publication2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009
Pages3342-3347
Number of pages6
DOIs
StatePublished - 2009
Event2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009 - Changchun, China
Duration: 9 Aug 200912 Aug 2009

Publication series

Name2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009

Conference

Conference2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009
Country/TerritoryChina
CityChangchun
Period9/08/0912/08/09

Keywords

  • Fishlike robot
  • Hydrodynamics
  • Pressure gradient
  • Propulsive efficiency
  • Thrust force

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