CFD simulation of vortex turbine performance with various water flow rates and number of runner blades.

Autor: Sucipta, Made, Sugita, I. Ketut Gede, Anggarana, Bagus Gde Didit Citra
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Zdroj: AIP Conference Proceedings; 2024, Vol. 2891 Issue 1, p1-8, 8p
Abstrakt: Energy resources are available in many forms in nature, one of which is from water. However, the utilization of the technology to harness energy from water remains low and water is considered to be prone to the kinetic fluctuation. One of the water-based power generator types that are widely developed is the micro hydro power plant which adopts the vortex turbine technology. This research evaluates the turbine model with top of the runner placed parallel to top floor of the basin with semi-twisted curve blade design. The evaluation of the turbine performance was investigated with variation of 3 up to 5 runner blades with 1 increment. The inlet water flow rate of the basin is varied at 45%, 75%, 105%, and 135% of the maximum water flow rate obtained through the Bernoulli's principle. The methodology of analysis was carried out by computational fluid dynamics (CFD) using ANSYS FLUENT software. Result of this study suggested that the optimum design for the turbine is with number of 5 blade with 105% of maximum flow rate, which can produce torque of 2.07 Nm and able to generate 50.91 watt of power with relatively high efficiency of 76.11%. The simulation results also indicated that increasing the number of runner blade until 5 are linked to the increase of the turbine performance. The flow rate trend has its peak performance at 105% with a significant fall after reaching 135%. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index