Evaluation of CLAWPACK with gravity and multiple phases for use in marine technology

English summary. This thesis concerns the use of the program package CLAWPACK (Conservation LAWs PACKage) in problems related to marine technology. Problems investigated are vortex shedding, multiple phases and gravity. This thesis includes mathematical theory of the governing equations and principles of CLAWPACK. Further, it contains a discussion on boundary conditions, several ways of handling gravity and validation tests with results and discussions.