TY - JOUR
T1 - Performance Analysis of the Effects of Microgrooved Surface on A Marine Current Turbine with Underwater Mooring Platform
AU - Dang, Zhi gao
AU - Mao, Zhao yong
AU - Song, Bao wei
AU - Yang, Guang yong
N1 - Publisher Copyright:
© 2022, Chinese Ocean Engineering Society and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2022/10
Y1 - 2022/10
N2 - Marine current turbine (MCT), which is designed for the power supply of underwater mooring platform (UMP), is investigated in this article. To reduce its flow noise, the microgrooved surface is applied at the suction surface of the turbine blades. Comprehensive analyses of the effects of the UMP on MCT with microgrooved surface in different working conditions are presented. The transient turbulent flow field is obtained by incompressible large eddy simulation (LES), and then the Ffowcs Williams and Hawkings (FW—H) acoustic analogy is adopted to forecast the flow noise generated from the pressure fluctuations and loadings of the UMP shell and MCT blade surfaces. The numerical methods are first validated with experimental data and good agreements are obtained. Then, the influence of several key parameters on the performance of the MCT is then systematically studied, including interval distance, angle of pitch and angle of sideslip. For each case, the hydrodynamic parameters (thrust coefficient, torque coefficient and power coefficient), the vortical structures behind the model and the overall sound pressure level (OASPL) directionality are analyzed. Additionally, the noise reduction effect of the microgrooved surface is also presented. The present investigation could provide an overall understanding for the performance of MCT combined with UMP.
AB - Marine current turbine (MCT), which is designed for the power supply of underwater mooring platform (UMP), is investigated in this article. To reduce its flow noise, the microgrooved surface is applied at the suction surface of the turbine blades. Comprehensive analyses of the effects of the UMP on MCT with microgrooved surface in different working conditions are presented. The transient turbulent flow field is obtained by incompressible large eddy simulation (LES), and then the Ffowcs Williams and Hawkings (FW—H) acoustic analogy is adopted to forecast the flow noise generated from the pressure fluctuations and loadings of the UMP shell and MCT blade surfaces. The numerical methods are first validated with experimental data and good agreements are obtained. Then, the influence of several key parameters on the performance of the MCT is then systematically studied, including interval distance, angle of pitch and angle of sideslip. For each case, the hydrodynamic parameters (thrust coefficient, torque coefficient and power coefficient), the vortical structures behind the model and the overall sound pressure level (OASPL) directionality are analyzed. Additionally, the noise reduction effect of the microgrooved surface is also presented. The present investigation could provide an overall understanding for the performance of MCT combined with UMP.
KW - flow noise
KW - large eddy simulation
KW - marine current turbine
KW - microgrooved surface
KW - underwater mooring platform
UR - http://www.scopus.com/inward/record.url?scp=85141749960&partnerID=8YFLogxK
U2 - 10.1007/s13344-022-0067-y
DO - 10.1007/s13344-022-0067-y
M3 - 文章
AN - SCOPUS:85141749960
SN - 0890-5487
VL - 36
SP - 755
EP - 766
JO - China Ocean Engineering
JF - China Ocean Engineering
IS - 5
ER -
