简介：Inthispapersomediscussionsshownwhatshouldbetheconsiderablereasonsfordifficultyincomparisonbetweenresultsofcavitationtestsinvacuumtankandsomesuggestionsaregivenhowtoimprovethecavitationtestsunderaconditionofvacuumpressure.

简介：AnewtypeBoussinesqmodelisproposedandappliedforwavepropagationinawaveflumeofuniformdepthandoverasubmergedbarwithcurrentpresentorabsent,respectively.Firstly,forthepropagationofmonochromaticincidentwavewithcurrentabsent,theBoussinesqmodelistestedinitscompleteform,andinaformwithouttheintroductionofutilityvelocityvariables.Itisvalidatedthattheintroductionofutilityvelocityvariablescanimprovethecharacteristicsofvelocityfield,dispersionandnonlinearity.BothversionsoftheBoussinesqmodelsareofhigheraccuracythanthefully-nonlinearfourth-ordermodel,whichisoneofthebestformsamongtheexistingtraditionalBoussinesqmodelsthatdonotincorporatebreakingmechanisminonedimension.Secondly,theBoussinesqmodelinitscompleteformisappliedtosimulatingthepropagationofbichromaticincidentwaveswithcurrentpresentorabsent,respectively,andthemodeledresultsarecomparedtotheanalyticalonesortheexperimentalones.Themodeledresultsarereasonableinthecaseofinputtingbichromaticincidentwaveswiththestrongopposingcurrentpresent.