TY - JOUR
T1 - Numerical Investigation on Suitable Flow Guide for Performance Enhancement of Darrieus-Type Hydraulic Turbine by 2-D Simulation
AU - Mayuzumi, Y.
AU - Katayama, Y.
AU - Watanabe, S.
AU - Tsuda, S.
N1 - Funding Information:
This work was supported by Komiya Research Grant in Turbomachinery Society of Japan.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2022
Y1 - 2022
N2 - The aim of this investigation is improvement of the performance of Darrieus-Type hydraulic turbines operated in an open channel. Since the output power is very small in such a utilization of small hydropower, it is important to get more power for the cost reduction. In our previous experimental investigation, the performance of turbine runner installed near the side wall of the channel was better than that installed at the center of the channel. In order to enhance the output power, a flat guide was installed upstream of the runner on the opposite side of the side wall. In the present study, we parametrically investigate the effects of flow guiding angle and installation position of the guide on the turbine performance. Two-dimensional unsteady CFD simulations are carried out to qualitatively understand the flow mechanism leading to the better performance of turbine. As a result, it is found that the turbine performance can be significantly enhanced by the appropriately placed flow guide. This enhancement is found to be achieved by the improvement of turbine efficiency and the increase of the input power.
AB - The aim of this investigation is improvement of the performance of Darrieus-Type hydraulic turbines operated in an open channel. Since the output power is very small in such a utilization of small hydropower, it is important to get more power for the cost reduction. In our previous experimental investigation, the performance of turbine runner installed near the side wall of the channel was better than that installed at the center of the channel. In order to enhance the output power, a flat guide was installed upstream of the runner on the opposite side of the side wall. In the present study, we parametrically investigate the effects of flow guiding angle and installation position of the guide on the turbine performance. Two-dimensional unsteady CFD simulations are carried out to qualitatively understand the flow mechanism leading to the better performance of turbine. As a result, it is found that the turbine performance can be significantly enhanced by the appropriately placed flow guide. This enhancement is found to be achieved by the improvement of turbine efficiency and the increase of the input power.
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U2 - 10.1088/1755-1315/1037/1/012050
DO - 10.1088/1755-1315/1037/1/012050
M3 - Conference article
AN - SCOPUS:85132824207
VL - 1037
JO - IOP Conference Series: Earth and Environmental Science
JF - IOP Conference Series: Earth and Environmental Science
SN - 1755-1307
IS - 1
M1 - 012050
T2 - 3rd IAHR-Asia Symposium on Hydraulic Machinery and Systems, IAHR-Asia 2021
Y2 - 22 November 2021 through 23 November 2021
ER -