The frequency domain solver can be used to solve at either wave frequency or low frequency solution frequencies.īecause of the stochastic nature of frequency domain analysis, the primary results output are statistics and spectral density. The linearisation of the quadratic viscous drag load requires this process to be conducted iteratively until a converged solution is found. These linear transfer functions are used to calculate the system's response at each frequency of interest. Because the system is defined by its static state, frequency domain analysis is not appropriate for analysing time-varying operations. the wave elevation) or loading process to the system's response process. The frequency domain solver uses the result of the static analysis as the system's configuration at which to generate linear transfer functions that map the underlying stochastic environmental (e.g. Any nonlinearites present are approximated to be linear by the frequency domain solver in a process known as linearisation. Frequency domain dynamic analysisįrequency domain analysis is linear. OrcaFlex offers two approaches to dynamic analysis: frequency domain and time domain.