科研之友
微信
新浪微博
Facebook
分享链接
摘要
In the present research, an experimental study of forced convective flows of different nanofluids through a corrugated wavy channel at a constant wall temperature condition was performed. Effects of different parameters, including nanoparticle concentration (copper nanoparticles in deionized water), types of oxide nanoparticles (SiO2, TiO2, ZnO, Fe2O3, Al2O3, and CuO), and types of base fluid (deionized water-ethylene glycol mixture), for different volumetric flow rates were examined. The convective heat transfer coefficient and pressure drop measurements were carried out. Results indicate that, for all the values of the flow rate, the Nusselt number augments and Fanning friction factor reduces as the concentration of the copper nanoparticles decreases. In addition, it is shown that the SiO2-deionized water nanofluid yields the best thermal-hydraulic performance among the studied oxide nanoparticles in deionized water, and the TiO2- and CuO-deionized water nanofluids come in second and third. It is also found, whereas the thermal-hydraulic performance improves with increasing the mass of ethylene glycol in the deionized water base fluid, the SiO2 nanoparticles in a base fluid with the lower mass of the ethylene glycol in the deionized water shows a better performance.
- 出版日期2014-7
