Conceptions for heat transfer correlation of nanofluids

The nanofluid is a solid-liquid mixture in which metallic or nonmetallic na noparticles are suspended. The suspended ultrafine particles change transpo rt properties and heat transfer performance of the nanofluid, which exhibit s a great potential in enhancing heat transfer. The mechanism of heat trans fer enhancement of the nanofluid is investigated. Based on the assumption t hat the nanofluid behaves more like a fluid rather than a conventional soli d-fluid mixture, this article proposes two different approaches for derivin g heat transfer correlation of the nanofluid. The effects of transport prop erties of the nanofluid and thermal dispersion are included. (C) 2000 Elsev ier Science Ltd, All rights reserved.