Potable and safe drinking water is an essential component of livelihood. The treatment plant performance suffers due to failure of various mechanical components; hence many researchers have proposed rapid mixing of coagulant and flocculation process assisted with jet flow as a promising unit. Dhabadgaonkar, (2008) had designed helicoidal flow jet floccu-clarifier but, the formation of helicoidal flow and actual performance in the basin is still not clear. To get better understanding of this unit, only flocculator was designed and tested by using CFD approach. The study was undertaken by designing single basin flocculator using dual tangential jet with different inlet positions. The performances were compared with non-tangential single jet flocculator. Performance indicators like Morrill index, percentage of dead space and plug/mixed flow were calculated and analyzed to understand its impact. Among the three types of inlet positions studied, the basin with non-tangential single jet flocculator performed better compared to tangential jet flocculator. This study corroborates the findings of Pani and Patil (2007).