The　three-dimensional　pressure-and　shear-driven　flow　phenomena　in　a　circular　recess　of　hydrostatic　rotary　table　in　heavy-duty　computer　numerical　control　machines　is　very　complicated　and　has　not　been　fully　explored.　Navier-Stokes　equations　have　been　applied　through　the　whole　flow　region　using　a　finite　volume　approach　to　explore　this　complicated　flow　phenomena,　including　the　influences　of　feeding　Reynolds　number　(Re-i),　sliding　Reynolds　number　(Re-s)　and　the　recess　geometry　on　flow　behaviors.　A　test　rig　based　on　a　particle　image　velocimetry　was　built　to　compare　experimental　and　numerical　results,　finding　a　good　agreement　for　stationary　cases.　The　results　show　that　the　flow　patterns　in　the　recess　are　very　complex　and　four　three-dimensional　vortices　exist　at　Re-i　=　448　and　Re-s　=　74.6.　Four　flow　states　are　defined　according　to　the　structure　of　the　vortices.　Different　sectional　profiles　of　the　streamlines　and　velocity　vector　fields　are　examined　to　reveal　the　mechanism　of　pressure-and　shear-driven　flow　interactions.　The　results　of　influences　of　recess　geometry　on　flow　states　and　pressure　patterns　are　intended　to　contribute　to　represent　a　database　in　view　of　the　hydrostatic　rotary　table　theoretical　modeling.