TY - GEN
T1 - Optimization of intake and draft tubes of a kaplan micro hydro-turbine
AU - Abbas, Ahmad I.
AU - Amano, Ryoichi S.
PY - 2017
Y1 - 2017
N2 - This study presents an optimization for the design of each the intake (nozzle) and the draft tube (diffuser) for a 7.6 cm (3-inch) diameter horizontal-oriented and 90 cm (35-inch) diameter vertical-oriented Kaplan micro-hydro turbine systems at the very low head (less than 3 meters). It is necessary to utilize Computation Fluid Dynamics (CFD) analysis to test a variety of design parameters for the intake and the draft tubes to obtain a consistent overall design with maximum possible efficiency based on Large Eddy Simulation (LES) of transient turbulence modeling. Six angles (18, 24, 30, 36, 42 and 48 degrees) for the intake tube and five angles (12, 18, 24, 30 and 36 degrees) for the draft tube with four tube lengths for both tubes were investigated for both systems. After that, the shape of the channel of a bellmouth i.e. simple radius and elliptical profiles was considered in this study. All the cases have been tested and compared based on the power output and the efficiency of the turbine.
AB - This study presents an optimization for the design of each the intake (nozzle) and the draft tube (diffuser) for a 7.6 cm (3-inch) diameter horizontal-oriented and 90 cm (35-inch) diameter vertical-oriented Kaplan micro-hydro turbine systems at the very low head (less than 3 meters). It is necessary to utilize Computation Fluid Dynamics (CFD) analysis to test a variety of design parameters for the intake and the draft tubes to obtain a consistent overall design with maximum possible efficiency based on Large Eddy Simulation (LES) of transient turbulence modeling. Six angles (18, 24, 30, 36, 42 and 48 degrees) for the intake tube and five angles (12, 18, 24, 30 and 36 degrees) for the draft tube with four tube lengths for both tubes were investigated for both systems. After that, the shape of the channel of a bellmouth i.e. simple radius and elliptical profiles was considered in this study. All the cases have been tested and compared based on the power output and the efficiency of the turbine.
UR - http://www.scopus.com/inward/record.url?scp=85028540296&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85028540296
SN - 9781624105128
T3 - 15th International Energy Conversion Engineering Conference, 2017
BT - 15th International Energy Conversion Engineering Conference, 2017
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 15th International Energy Conversion Engineering Conference, 2017
Y2 - 10 July 2017 through 12 July 2017
ER -
