Applicability of the Godunov's method for fundamental four-equations FSI model

The present paper addresses mathematical and numerical model needed for description of the axial pipe movement induced with transient fluid motion. This phenomenon is also known as Fluid-Structure Interaction (FSI). Standard Skalak's four-equation model was applied and solved with improved second-order accurate numerical method that is based on Godounov's upwind first-order accurate method. Special attention was made to applicability of the numerical method for solution of the mathematical model. The method was verified using standard Delft Hydraulics Benchmark Problem A, and the preliminary results are very promising. (author)