Question

How many steps does the fourth-order Runge-Kutta method use?

(a) Two steps

(b) Five steps

(c) Four steps

(d) Three steps

This question was posed to me in final exam.

This interesting question is from Transient Flows topic in chapter Transient Flows of Computational Fluid Dynamics

Answer 1

The correct choice is (c) Four steps

Best explanation: All the Runge-Kutta methods are of high orders. The fourth-order Runge-Kutta method is a method which uses four steps. These four steps include the predictor and the corrector steps.