TY - JOUR
T1 - Design Optimization of High Specific Speed Prototype Francis Turbine by Design of Experiments
AU - Lee, Nak Joong
AU - Hwang, Young Cheol
AU - Inagaki, Morihito
AU - Miyagawa, Kazuyoshi
N1 - Funding Information:
The authors would like to thank the Waseda Research Institute for Science and Engineering (WISE) for providing support to the presented research, in context of the project: ‘High performance and high reliability research for turbomachinery systems’. This research was supported by a grant (code 20IFIP-B128598-04) from the Plant Program funded by Ministry of Land, Infrastructure and Transport of the Korean government.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2021/5/25
Y1 - 2021/5/25
N2 - In general, Francis turbines are known to last for 40 to 50 years of use. However, exchanging an old turbine for a new is expensive because of modernization costs. Therefore, many modernization projects will take place through new runner changes. The Francis turbine in this paper has a high specific speed of about 330m-kW and a runner diameter of about 4.3m. The new runner can be expected to have a more stable flow and improved performance by flow analysis. In this paper, the performance analysis of the runner was performed using the CFD by Design Of Experiments (DOE). The sensitivity of variables was examined using L18 method. Numerical analysis was performed via BladeGen, Turbogrid, ICEM CFD, and CFX, which are commercial CFD codes. The design goal is to enable not only the best efficiency point but also a more stable operation than before even at partial load conditions. Find out how to find the shape of a runner blade by searching for design points that maximize annual power generation according to newly selected operating conditions.
AB - In general, Francis turbines are known to last for 40 to 50 years of use. However, exchanging an old turbine for a new is expensive because of modernization costs. Therefore, many modernization projects will take place through new runner changes. The Francis turbine in this paper has a high specific speed of about 330m-kW and a runner diameter of about 4.3m. The new runner can be expected to have a more stable flow and improved performance by flow analysis. In this paper, the performance analysis of the runner was performed using the CFD by Design Of Experiments (DOE). The sensitivity of variables was examined using L18 method. Numerical analysis was performed via BladeGen, Turbogrid, ICEM CFD, and CFX, which are commercial CFD codes. The design goal is to enable not only the best efficiency point but also a more stable operation than before even at partial load conditions. Find out how to find the shape of a runner blade by searching for design points that maximize annual power generation according to newly selected operating conditions.
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U2 - 10.1088/1742-6596/1909/1/012047
DO - 10.1088/1742-6596/1909/1/012047
M3 - Conference article
AN - SCOPUS:85107395909
SN - 1742-6588
VL - 1909
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012047
ER -