Study of the Effect of Bulb Ratio and Blade Angle on Propeller Turbine Performance in Horizontal Flow using Numerical Simulation

Abstract

<jats:p>This paper discusses numerical simulations of horizontal flow propeller turbines. Static bulbs located before the turbine can be used to increase water velocity and potentially increase the turbine's performance. The blade angle affects the gap between the blades, and this will also affect the performance of the turbine. Numerical simulations were conducted by using software Solid Works Flow Simulation 2016 and by using five blades in a static state. This study aimed to determine the effect of the bulb ratio and blade angle on the propeller turbine characteristics on horizontal flow. Bulb Ratio variations used in this study were 0, 0.4, 0.6, and 0.8, while the angle variations used were 20, 25, and 30 degrees. Each variation was tested at 0.02 m3/second. The results of this study indicated that the bulb ratio 0.6 with the 25-degree blade angle produces the highest torque</jats:p>

Analysis Of the Effect of Flow Rate and Speed on Four Blade Tubular Water Bulb-Turbine Efficiency Using Numerical Flow Simulation

“…Design of the inlet and outlet curvature of the propeller turbine used in this study refers to the design in reference [16,17] with a 200-blade angle as referred to in reference [1], while the turbine tip-hub diameter refers to reference [13] with the diameter ratio bulb to 0.6 inlet pipe diameter refers to reference [15] and the number of blades 4. Figure 1, Figure 2, and Figure 3 shows the turbine propeller, the assembly turbine propeller with bulb body, and the total assembly rig used in this study.…”

“…The numerical simulation process in this study uses Solidworks 2016 Flow Simulation software. To obtain accurate simulation results, validation testing is necessary in determining the meshing level [15]. In this study using meshing level 5, referred to reference [15] which has a similar design.…”

Influence of Blade Number on the Hydrodynamic Performance of a Propeller-Type Axial Turbine for In-Pipe Installation

“…A few studies have been published on propeller-type axial turbines under 100 mm in diameter. An example is the study by Kurniawan et al, [36] and Nurdin et al, [37], which aimed to determine the electrical power of an axial turbine varying the number of blades from 4 to 8 under different water discharge values. The experimental studies used a horizontal pipe with a turbine installed within it.…”

Analysis of the Effect of Blade Thickness on Propeller Water Turbine Performance Using Computational Fluid Dynamic

“…In water energy or hydropower on the lowest scale namely pico-hydro (Nurdin et al, 2020), the turbine has a light workload, so that allows it to be made with polymer materials, one of which is Acrylonitrile Butadiene Styrene or ABS with rapid manufacturing 3D printing technology (Darsono et al, 2021). In the design of the propeller turbine, the most concerned loading is the axial load which has an impact on the blades [7].…”