The influence of a magnetic field on the heat transfer of a magnetic nanofluid in a sinusoidal channelS. Valiallah Mousavi, M. Barzegar Gerdroodbary, Mohsen Sheikholeslami and D. D. GanjiEur. Phys. J. Plus, 131 9 (2016) 347DOI: https://doi.org/10.1140/epjp/i2016-16347-4