Analysis of Gottingen 428 Airfoil Turbine Propeller Design with Computational Fluid Dynamics Method on Gravitational Water Vortex Power Plant

Abstract

along with technological development and the increase in human population, the electricity needs are increasing every year. However, 94% of a power plant in Indonesia still using fossil fuels that are a pollutant and non-renewable. In addition, NASA said that the earth's temperature had risen by 1°C since 1880 and the current carbon dioxide level was the highest in the last 650,000 years. Therefore, Indonesia needs to improve, in fact, Indonesia is one of the highest emission contributors in the world. Indonesia is not yet 100% electrified, there are still 2,519 villages without electricity. Gravitational Water Vortex Power Plant (GWVPP) is a micro hydro-power plant may answer the problem because it is easy renewable energy to be made and utilized in the NIZ (not interconnected zones) region. This study will examine the changes in the number and shape of the blade, as well as the length of the chord, to know the effect on turbine power so that it can produce higher efficiency at GWVPP. Propeller turbine with a Gottingen 428 airfoil analyzed using Computational Fluid Dynamics (CFD) method. The results show that the number of blades and the length of the chord is inversely proportional to the efficiency of the turbine, and the shape of the blade is more efficient when it's twisted.

Runner optimal position in a gravitational water vortex hydraulic turbine with a spiral inlet channel and a conical basin

“…The height and diameters (top and bottom) of the runner, the inlet and the outlet angles, the helical pitch angle, the number of blades and the position in the basin. The height and diameters of the runner, number of blades, inlet, outlet and helical pitch angles were assigned by considering the available literature [14,20,21,[22][23][24]. During the analysis process, three different positions of the runner were compared.…”

Kinerja Turbin Vortex dengan Sudu Semi Twisted Curve

“…Sedangkan untuk aliran sungai dengan head yang rendah belum dimanfaatkan secara optimal. Pembangkit listrik berbasis turbin vortex dapat digunakan sebagai solusi untuk daerah yang tidak terjangkau listrik dan memiliki debit air pada head yang realatif rendah [1]. Turbin vortex adalah sebuah pilihan yang baik untuk pembangkit listrik di desa-desa terpencil di mana pasokan jaringan listrik sulit [2].…”

Untitled

“…Wardhana et al [27] analysed the behavior of propeller type impellers when positioned in GWVHT systems. They made variations in the shape and length of the blade chord, as well as in the number of blades.…”