Research Article
Numerical and Experimental Performance Investigation of Vertical-Axis Hydrokinetic Turbine
@INPROCEEDINGS{10.1007/978-3-030-93712-6_34, author={Muluken Temesgen Tigabu and D. H. Wood and Bimrew Tamrat Admasu}, title={Numerical and Experimental Performance Investigation of Vertical-Axis Hydrokinetic Turbine}, proceedings={Advances of Science and Technology. 9th EAI International Conference, ICAST 2021, Hybrid Event, Bahir Dar, Ethiopia, August 27--29, 2021, Proceedings, Part II}, proceedings_a={ICAST PART 2}, year={2022}, month={1}, keywords={DMST model RM2 reference turbine Hydrodynamics performance Power coefficient VAHKTs}, doi={10.1007/978-3-030-93712-6_34} }- Muluken Temesgen Tigabu
D. H. Wood
Bimrew Tamrat Admasu
Year: 2022
Numerical and Experimental Performance Investigation of Vertical-Axis Hydrokinetic Turbine
ICAST PART 2
Springer
DOI: 10.1007/978-3-030-93712-6_34
Abstract
We presented the performance of H-type vertical axis hydrokinetic turbine (VAHKTs). To study the hydrodynamics of VAHKTs an analytical method using a double multi-stream tube (DMST) model was used and an experimental study was employed to validate the DMST results. The key difficulty in the development of VAHKTs technologies is the limited number of researches that show the actual performance under different water velocities. We developed a Matlab code to predict the performance and for validation experimental investigations were performed. The performance operational parameters of power coefficient((CP))and torque coefficient((CQ))were used with tips speed ratio (TSR). To validate the DMST and experimental results we used a reference turbine (RM2) developed by the USA Department of Energy’s (DOE). A good agreement was found between the analytical and experimental results with the reference turbine. From the study, it is found that the(C_P)of VAHKTs show an increment and then decrease as the TSR increased. The operating region for VAHKTs is between(1.2\le TSR\le 3.8). The study illustrated that at(TSR \ge 4)it is found that there is no power generation from VAHKTs. As s result, the Matlab code we developed based on DMST can be used as a cost effect and robust tool to design and predict the performance of VAHKTs.
