The　numerical　results　disclose　that　there　are　several　locally　low-pressure　areas　inside　a　well-designed　steam　ejector.　Based　on　this　finding,　a　so-called　auxiliary　entrainment　technology　is　proposed　to　entrain　extra　entrained　steam　by　connecting　these　locally　low-pressure　areas　to　the　suction　chamber　of　the　entrained　steam.　Then　numerical　simulations　are　carried　out　of　different　auxiliary　entrainment　schemes.　The　results　reveal　that　although　the　auxiliary　entraining　entrance　of　the　mixing　chamber　auxiliary　entrainment　can　entrain　some　low-pressure　steam　into　the　ejector,　the　auxiliary　entrainment　results　in　a　decrease　in　the　entrained　steam　mass　flow　rate　of　the　main　entrained　steam　entrance　that　is　greater　than　the　auxiliary　entrainment　steam　mass　flow　rate.　However,　it　is　also　disclosed　that　the　throat　auxiliary　entrainment　does　increase　the　entrainment　ratio　of　the　steam　ejector.　The　best　result　obtained　in　our　simulation　is　that　the　ejector　entrainment　ratio　is　increased　by　3.68%.　Therefore,　it　may　be　concluded　that　auxiliary　entrainment　may　be　an　effective　way　for　improving　the　performance　of　steam　ejectors,　although　its　feasibility　needs　proving　experimentally.　©　2017,　Begell　House　Inc.　All　Rights　Reserved.