Recently, the nanofluids have obtained the attention of researchers and the scientific community owing to their unique properties and significant applications in several fields such as engineering, solar energy, nanomedicine, space technology, renewable energies, and many others. Nanofluids, which contain ultrafine particles in the nanometer range, have been developed and investigated as a novel generation of heat transfer fluids. Among their substantial advantages is greater thermal conductivity, but the stability of nanofluid should be examined, more pumping power is another issue for them. It has been reported that the stability and dispersion of nanosized particles in the host fluid can greatly affect the performance of nanofluids in a variety of fields. There are many different and novel methods presented for analytical and numerical solutions of nanofluids. In this book, some of these methods are introduced (optimal homotopy analysis method and lattice Boltzmann method).
