The flows in hydrodynamic torque converters are complicated,inconstant,incompressible,three-dimen-sional and viscous.An adjustable hydrodynamic torque converter is set up by adding the adjustable guide wheels tothe torque converter with three components.In the investigation,the full port models of the torque converters withdifferent openings are constructed based on the fact that the adjustable guide vane of the hydrodynamic torque con-verter is of multiple openings.Then,the internal flow of the torque converter is simulated by means of the segrega-ted solver,the SIMPLE algorithm and the large eddy simulation (LES) turbulence model.Based on the simulationresults,both the flow characteristics of the internal flow field and the working characteristics of the guide wheels areanalyzed.Thus,the roles of adjustable and fixed guide wheels are acquired,which can provide guidance for impro-ving the performance of the adjustable hydrodynamic torque converter as well as for designing guide vanes.