%0 Journal Article %T Entropy generation analysis of nanofluid flow over a spherical heat source inside a channel with sudden expansion and contraction %A Nouri, Davoud %A Passandideh-Fard, Mohammad %A Mohammad Javad Oboodi %A Mahian, Omid %A Ahmet Z. Sahin %J International Journal of Heat and Mass Transfer %@ 0017-9310 %D 2018