Blade element momentum theory for a skewed coaxial turbine

被引：6
|
作者：
Elfering, Kelsey [1 ]
Metoyer, Rodney [1 ]
Chatterjee, Punnag [1 ]
Mazzoleni, Andre [1 ]
Bryant, Matthew [1 ]
Granlund, Kenneth [1 ]
机构：
[1] North Carolina State Univ, Dept Mech & Aerosp Engn, Raleigh, NC 27695 USA
来源：
OCEAN ENGINEERING | 2023年 / 269卷
关键词：
Skew; Hydrokinetic energy; Coaxial turbines; Counter-rotating turbines; Blade element momentum theory; WIND TURBINE;
D O I：
10.1016/j.oceaneng.2022.113555
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
A coaxial turbine under skew with significant rotor spacing has the potential for increased power output compared to a flow-aligned turbine due to a portion of the downstream rotor experiencing freestream velocity, referred to as a fresh flow region. A lab-scale prototype was designed and built to investigate the skew-to -power relationship of a coaxial turbine system as it compared to a blade element momentum theory model with multiple, sheared streamtubes representing the downstream rotor fresh flow region. The inclusion of the downstream rotor fresh flow region in the theoretical analysis is compared to the experimental data. The results support that the torque and power performance of the downstream rotor and overall skewed coaxial turbine system are predicted more accurately.
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收藏
页数：13
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