A Similarity Solution of Laminar Boiling Flow of Nanofluids on a Superheated Surface Considering Variable Volume Fraction

Using the nanofluid instead of pure water is one of the ways for increasing the heat transfer and rate of cooling. This article studies the laminar flow of nanofluid over a superheated surface. The nanofluid evaporates after contact with the surface and as a result the volume fraction increases. The governing equation including continuity, momentum, and energy are transformed to ODE by similarity solution and solved using 4th order Rung-Kutta method with a shooting procedure. The results show that water-Cu with the volume fraction of 0.2, increases the heat transfer and rate of cooling about 42% and the drag force about 15%. Moreover, the results are demonstrated for moving surface to increase the rate of cooling of the quenching process and control the hardness of steels.