The　computational　fluid　dynamics　(CFD)　model　has　been　used　to　investigate　the　two-phase　flow　phenomena　such　as　high-pressure　water　jet.　High-pressure　water　jet　is　a　new　technology　and　develops　rapidly　due　to　its　advantages　in　recent　years.　In　this　research,　the　effects　of　different　models　on　the　macroscopic　parameters　of　jet　propagation　characteristics　of　high　pressure　water　jet　have　been　investigated　numerically　through　the　CFD　technique.　The　simulations　of　the　water　jet　with　three　kinds　of　k-Ε　models　(i.e.,　standard,　RNG,　and　realizable　k-Ε　models)　have　been　compared　under　the　same　conditions.　It　may　be　concluded　that,　the　results　calculated　by　the　realizable　k-epsilon　model　agree　well　with　the　experiment　data　and　the　realizable　k-epsilon　model　would　be　utilized　in　the　latter　simulation.　The　agreement　of　the　predicted　data　and　experimental　data　are　quite　reasonable,　it　demonstrates　that　the　CFD　technique　can　be　successfully　applied　to　high-pressure　water　jet.　©　(2014)　Trans　Tech　Publications,　Switzerland.