Author/Authors :
Izadi، M نويسنده Mechanical Engineering Department, University of Shahrood, Shahrood, I.R. Iran , , Shahmardan، M.M نويسنده Department of Mechanical Engineering,Shahrood University of Technology , , Behzadmehr، A نويسنده Nanotechnology Reasearch Institute, University of Sistan and Baluchestan, Zahedan, I.R. Iran , , Rashidi، A.M. نويسنده , , Amrollahi، A. نويسنده ,
Abstract :
This paper was aimed to address the modeling of effective thermal conductivity and viscosity of carbon structured nanofluids. Response surface methodology, D_optimal design (DOD) was employed to assess the main and interactive effects of temperature (T) and weight percentage (wt %) to model effective thermal conductivity and viscosity of multi wall and single wall carbon nanotube, CVD and RGO Graphene and nanoporous Graphene sheet. The second-order polynomial regression model was proposed for effective thermal conductivity and viscosity as a function of relevant investigated parameters. Effective thermal conductivity and viscosity of nanofluids measured using an accurate transient short hot wire system and a viscometer, respectively. nanofluids was prepared using two-step method and showed a desirable stability. In general, Graphene nanosheets have more effective thermal conductivity and viscosity compared to carbon nanotube because of variation in shape and likely size.
