Two-sphere low Reynold's propeller

TL;DR

This paper introduces a three-dimensional low-Reynolds-number swimmer model with two spheres connected by rods, analyzing how parameter variations influence its velocity and direction of motion.

Contribution

A novel three-dimensional two-sphere swimmer model inspired by microorganisms, with analysis of its propulsion mechanisms and velocity control.

Findings

Velocity and direction can be controlled by parameter adjustments

The model effectively simulates microorganism swimming behavior

Analysis provides insights into low-Reynolds-number propulsion

Abstract

A three-dimensional model of a low-Reynold's swimmer is introduced and analyzed in this paper. This model consists of two large and small spheres connected by two perpendicular thin rods. The geometry of this system is motivated by the microorganisms that use a single tail to swim, the large sphere represents the head of microorganism and the small sphere resembles its tail. Each rod changes its length and orientation in a non-reciprocal manner that effectively propel the system. Translational and rotational velocities of the swimmer are studied for different values of parameters. Our findings show that by changing the parameters we can adjust both the velocity and the direction of motion of the swimmer.