The performance of heat transfer on a car radiator can be improved by using nanofluids as working fluids. In this study analyzes the of heat transfer performance of Al2O3/water nanofluids that pass through cylindrical pipes in 3D using the CFD simulation method for single phase approach. This research studied the effect of nanofluid concentration 0. https://www.spidertattooz.com/NYX-Total-Control-Drop-Foundation-Brush-PROB22-p11165/