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Typical Model Studies01:30

Typical Model Studies

Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.

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Fluid-Structure Interaction Analysis of a Bionic Robotic Fish Based on a Macrofiber Composite Material.

Chenghong Zhang1

  • 1School of Electronics & Information Engineering, Guiyang University, Guiyang 550005, China.

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This study simplified a bionic robotic fish

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Area of Science:

  • Robotics
  • Fluid Dynamics
  • Biomechanics

Background:

  • Bionic robotic fish offer advanced mobility.
  • Simplified power systems enhance flexibility and reduce volume.
  • Understanding fluid-structure interaction (FSI) is crucial for propulsion.

Purpose of the Study:

  • To analyze the fluid-structure interaction (FSI) dynamics of a simplified bionic robotic fish.
  • To investigate the relationship between input signal frequency and propulsion characteristics.
  • To validate simulation models against experimental data.

Main Methods:

  • Fluid-structure interaction (FSI) analysis was performed.
  • Dissipation due to fluid viscosity and wake performance were considered.
  • Experimental measurements of propulsion motion and force were conducted with a fixed head.

Main Results:

  • The study established relationships between driving frequency, fluid pressure, propulsion force, and displacement.
  • Simulation results showed close agreement with experimental findings.
  • The simplified design led to reduced volume and enhanced flexibility.

Conclusions:

  • The FSI analysis accurately predicts the propulsion characteristics of the soft robot fish.
  • The findings support further performance improvements for robotic fish.
  • Simplified power systems are effective for enhancing robotic fish maneuverability.