“EXPERIMENTAL STUDY OF HEAT TRANFER AUGMENTATION USING AIR BUBBLE INJECTION AND (Al2O3 /WATER) NANOFLUID FLOW IN DOUBLE PIPE HEAT EXCHANGERS” (2021) THE IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING, 21(2), pp. 96–117. doi:10.32852/iqjfmme.v21i2.546.