Film　cooling　is　an　effective　technique　to　isolate　the　heat　flux　from　high-temperature　mainstream,　but　the　counter-rotating　vortex　pair　(CRVP)　generated　by　the　interaction　between　film　jet　and　mainstream　leads　to　serious　jet-off　and　poor　film　coverage.　To　enhance　film　cooling　performance,　a　v-shaped　protru-sion/dimple　vortex　generator　is　arranged　at　the　upstream　location　of　film　hole　for　suppressing　the　CRVP.　The　flow　and　heat　transfer　characteristics　of　film　cooling　with　four　kinds　of　vortex　generators,　v-shaped　protrusion　vortex　generator　(VSPVG),　v-shaped　dimple　vortex　generator　(VSDVG),　anti-v-shaped　protru-sion　vortex　generator　(AVSPVG)　and　anti-v-shaped　dimple　vortex　generator　(AVSDVG),　are　investigated　in　detail　over　the　blowing　ratio　ranging　from　0.5　to　1.5　by　solving　three　dimensional　Reynolds-Averaged　Navier-Stokes　(RANS)　equations　with　Realizable　k-epsilon　turbulence　model.　Results　indicate　that　both　the　v-shaped　vortex　generators　can　generate　additional　anti-counter-rotating　vortex　pairs　(ACRVP)　to　weaken　the　CRVP,　while　both　the　anti-v-shaped　vortex　generators　will　enlarge　the　CRVP.　The　arrangement　of　VSPVG　or　VSDVG　is　proved　to　enhance　film　cooling　performance　significantly,　especially　the　VSPVG,　which　improves　the　adiabatic　film　cooling　effectiveness　by　82.3%,　187.9%,　157.7%,　162.2%　and　145.2%　re-spectively　corresponding　to　the　BR　=　0.5,　0.75,　1,　1.25　and　1.5　compared　with　Baseline　case.　Considering　the　total　pressure　loss,　it　is　found　that　the　enhancement　of　film　cooling　effectiveness　comes　at　the　cost　of　slightly　increased　total　pressure　loss.　In　further　study,　the　effect　of　VSPVG　height　on　film　cooling　per-formance　is　also　discussed.　It　is　observed　that　the　adiabatic　film　cooling　effectiveness　increases　with　an　increase　of　the　height,　and　the　total　pressure　loss　also　inescapably　increases,　but　it　is　worth　celebrat-ing　that　compared　with　Baseline　case,　the　higher　film　cooling　effectiveness　and　lower　total　pressure　loss　coefficient　is　obtained　when　the　height　is　lower　than　0.15　D　.　(c)　2021　Elsevier　Ltd.　All　rights　reserved.