Etude experimentale et numerique du comportement thermo hydraulique d'un nanofluide dans un ecoulement radial

摘要

The aim of the present study is to broaden the knowledge base on nanofluids' thermal and hydraulic behavior. An experimental study and numerical simulations were conducted in order to better understand the potential use of nanofluids in thermal applications. A water/aluminum oxide based nanofluid and a radial flow between two coaxial disks has been considered. An experimental setup and a numerical model were conceived and realized. The influence of mass flow, particle volume concentration of the nanofluid and the distance between the disks on the thermal efficiency were studied. The numerical study also permitted the study of the flow structure and the evaluation and comparison of the pressure loss for the fluids considered. Finally, a comparison between the experimental and numerical results was made. This comparison shows a good concordance between the results series.;Keywords: nanofluid, nanoparticles, water-alumina mixture, thermal transfer, temperature, radial flow, enclosed space flow, heat transfer coefficient.