Abstract
The basic equations of incompressible viscous fluid flow were integrated using the three-dimensional finite volume method. We calculated the flow field around the micro-machine was to estimate the swimming velocity, thrust, drag, and load torque of a spiral-type magnetic micro-machine. The swimming properties of the micro-machine were analyzed theoretically. We obtained good agreement was between the experimental and theoretical results, on which basis we judged a technique for three-dimensional analysis to be established.