Input to VIVANA Input to the VIVANA module comprises two data files. A user defined input file (ascii) given by the user A binary result file from the static solution found by RIFLEX (<prefix>_ifnsys.sam). The file provided by the user must be named using the same prefix as was used for the RIFLEX analysis. This chapter describes the contents of the user defined input file to VIVANA (<prefix>_vivana.inp). A typical input file for VIVANA is listed in Appendix A. The input to VIVANA is divided into seven sections: Control information VIV frequency analysis Specification of section properties VIV response analysis VIV fatigue analysis VIVANA print flags VIVANA MPF print flags Theoretical descriptions of the VIV evaluation scheme and the response analysis method are given in the VIVANA Theory Description. Applied units and physical constants Control information