Problem: Reservoir sedimentation occurs in dams worldwide, reducing the live storage available in the reservoirs. Possible solution: Jenzer-Althaus 2011) testes a water stirring device (called SEDMIX) that keeps sediments in suspension, enhancing its release through the power intakes of the dam reporting a high efficiency. Background studies: Numerical simulations for a prototype for the Trift reservoir have been carried out in the past by Amini et al. (2017) and Chraïbi et al. (2018), obrtaining good results for sediment evacuation and determining the optimal location and dimensions of the device. Objective of the current work: Numerically test the performance of SEDMIX at the Trift reservoir implementing thrusters instead of the previous configuration with water jets using ANSYS 2019 R1 software.