Numerical study of flow characteristics on wing airfoil eppler 562 with whitcomb winglet variationsS.P Setyo Hariyadi, Sutardi, Wawan Aries Widodo, Muhammad Anis Mustaghfirin and Arifandi RachmadiyanMATEC Web Conf., 204 (2018) 04009DOI: https://doi.org/10.1051/matecconf/201820404009