<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Semcheddine Derfouf, Nouredine Drias, Mohamed T. Bouzaher, Djemoui lalmi, Belhi Guerira,</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">&amp;ldquo;Impact of flexible blades on the vertical axis tidal turbine performances&amp;rdquo;</style></title><secondary-title><style face="normal" font="default" size="100%">Modelling, Measurement and Control B </style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2018</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.iieta.org/sites/default/files/Journals/MMC/MMC_B/87.01_06.pdf</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">87 (01), </style></volume><pages><style face="normal" font="default" size="100%">pp : 36-41, </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Previous research on the vertical axis turbines efficiency has used blades with a typical&amp;nbsp;static camber to improve the turbines efficiency. Typically, the static camber increases the&amp;nbsp;drag force, which affects negatively the optimal harvesting of energy. The present study&amp;nbsp;proposes deformable blades that change their shape relative to their angular position. The&amp;nbsp;new blade shape is achieved by deforming the airfoil camber line via a sinusoidal rounded&amp;nbsp;arc. The computed results show that the present type of deformation involves two typical&amp;nbsp;flow control mechanisms. Firstly, a leading edge control that alters the flow angle of attacks&amp;nbsp;and therefore the leading edge vortex (LEV) time of growth. Secondly, this type of&amp;nbsp;deformation comprises a trailing edge control that affects the physical size and strength of&amp;nbsp;the LEV. The lift force can be effectively increased. As a main result, the turbine power&amp;nbsp;coefficient appears to be higher by about 20% for the optimal operating conditions&amp;nbsp;</style></abstract><issue><style face="normal" font="default" size="100%">2018</style></issue></record></records></xml>