Background:　The　BJUT-II　VAD　is　a　novel　left　ventricular　assist　device　(LVAD),　which　is　thought　to　have　significant　effects　on　the　characteristics　of　aortic　swirling　flow.　However,　the　precise　mechanism　of　the　rotational　direction　of　BJTU-II　VAD　in　the　aortic　swirling　flow　is　unclear.　Material/Methods:　A　patient-specific　aortic　geometric　model　was　reconstructed　based　on　the　CT　data.　Three　pump＇s　output　flow　profiles　with　varied　rotational　direction,　termed　＂counterclockwise＂,　＂flat　profile＂,　and　＂clockwise＂,　were　used　as　the　boundary　conditions.　The　helicity　density,　area-weighted　average　of　helicity　density　(Ha),　localized　normalized　helicity　(LNH),　wall　shear　stress　(WSS),　and　WSS　spatial　gradient　(WSSG)　were　calculated　to　evaluate　the　swirling　flow　characteristics　in　the　aorta.　Results:　The　results　demonstrated　that　the　swirling　flow　characteristics　in　the　aorta　and　3　branches　are　directly　affected　by　the　output　blood　flow　of　BJUT-II　VAD.　In　the　aortic　arch,　the　helicity　density,　supported　by　the　clockwise　case,　achieved　the　highest　value.　In　the　3　branches,　the　flat　profile　case　achieved　the　highest　helicity　density,　whereas　the　maximum　WSS　and　WSSG　generated　by　clockwise　case　were　lower　than　in　other　cases.　Conclusions:　The　outflow　of　the　BJUT-II　VAD　has　significant　effects　on　the　aortic　hemodynamics　and　swirling　flow　characteristics.　The　helical　blood　profiles　can　enhance　the　strength　of　aortic　swirling　flow,　and　reduce　the　areas　of　low　WSS　and　WSSG　regions.　The　clockwise　case　may　have　a　benefit　for　preventing　development　of　atherosclerosis　in　the　aorta.