Application of functional analysis to oscillatory ship model testing

Abstract

The need for data relating to fluid forces and moments has led to general acceptance of oscillatory testing of ship models. Although the technique is well established, certain problems still attend the interpretation of results. The nature of the difficulties is explained and they are elucidated by making allowance for time history effects, using functional analysis. Allowance for these effects in this way also establishes that certain results which have hitherto been assumed to require nonlinear representations are in fact capable of very accurate linear specification.