Flying fish rely on a similar flow of accelerated air from their pectoral fins to provide lift to their smaller pelvic fins.

In order to make the experiments environment close to the real network, in the experiments of verifying fairness of algorithm we use self-similar flow as the background flows.

The general analytic solution for the potential flow in an elliptical area with a coaxial elliptical hole was found by combining similar flow substitution and flow area division.