velocity profilevelopausevena contractaventilateventuri flumeventuri meterventuri tubevericulateverificationverkhovodkaverticalvertical axisvertical gatevertical intakevertical interval = terrace intervalvertical pipevertical velocityvertical velocity divergencevertical visibilityvertical wind velocityvertically exaggerated modelvertisolsvery deep gullyvery fine sandvery short range forecastvibrationviewshedvirtual temperatureviscosimeterviscosityviscousviscous flowviscous fluidvitrifyvoidvoid spacevoids ratiovolcanic dustvolcanismvolumevolumetric methodvolumetric scalevolumetric water contentvortexvortex corevortex diamtervortex flowvortex lengthvorticityvorticity advection