🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtTürkçeРусскийفارسیहिन्दी한국어中文日本語EntityQ898249· pop 23· linked from 98 articlesRayleigh numbercharacteristic number of heat transport in fluidsAvailable in 23 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoहिन्दीCatalanCzechConnectionsviscosityEntityconvectionEntityCategoriesConvectionDimensionless numbers of fluid mechanicsDimensionless numbers of thermodynamicsFluid dynamics