The　flow　behavior　inside　the　vane　surface　tension　tank　is　studied　by　using　CFD-VOF　method.　Gravitational　acceleration　and　contact　angle　are　taken　into　consideration　as　control　parameters.　It　is　shown　that　when　the　contact　angle　is　10°　and　the　gravitational　acceleration　is　less　than　10-2g0,　the　fluid　reaches　the　top　of　the　tank　along　the　outer　vanes.　Moreover,　the　flow　along　the　outer　vanes　is　little　influenced　by　the　decrease　of　the　gravitational　acceleration　when　the　gravitational　acceleration　is　less　than　10-3g0.　The　fluid　velocity　near　the　outer　vanes　decays　gradually　during　the　flow　process,　and　the　initial　velocity　depends　on　gravitational　acceleration,　the　less　gravitational　acceleration,　the　larger　initial　velocity.　Furthermore,　the　height　of　the　flow　climbing　is　impacted　significantly　by　the　contact　angle.　As　the　contact　angle　decreases　the　time　of　the　fluid　climbing　to　the　top　of　the　tank　increased,　and　when　the　contact　angle　is　greater　than　45°,　the　fluid　near　the　outer　vanes　cannot　reach　the　top　of　tank.　Ultimately,　the　relationship　between　the　length　of　the　climbing　flow　(L(t))　with　the　contact　angle　(θ)　is　also　analyzed.　It　is　observed　that　the　increase　of　contact　angle　leads　to　the　decreases　of　slope　of　the　L(t)　and　the　initial　velocity　of　the　fluid　near　the　vanes.　©,　2015,　Chinese　Journal　of　Theoretical　and　Applied　Mechanics　Press.　All　right　reserved.