A turbine converts the energy of the incoming fluid flow into mechanical energy that is responsible for the electricity generation in wind power and hydropower. The low-speed incoming flow might reduce the performance of the turbine. By creating a turbulence incoming flow, thus increasing the kinetic energy of the flow, the turbine might rotate at a lower threshold of the incoming flow speed. The significance of the turbulence generator was evaluated experimentally by using a turbine-like mechanical fan and a passive turbulence generator in a sinking test in a water tank. The experiments were arranged with a full factorial design method at two levels and three factors of diameter (DT), maximum length (LT), and distance of the turbulence generator (sT). This study suggests that the distance of the turbulence generator (sT) is the significant factor within the significant level of 0.05, degree of freedom of 4, and t-value of 2.776.