Lattice Boltzmann simulation for hydrothermal analysis of free convection within dumbbell-shaped heat exchanger

نویسندگانAli Reza Rahimi, Ali Dehghan Saei, Abass Kasaeipoor, Peyam Hoshmand, Emad Hasani Malekshah
شماره صفحات۱
شماره مجلد۵۶
ضریب تاثیر (IF)1.051
نوع مقالهFull Paper
تاریخ انتشار۱۳۹۷/۰۶/۲۰
رتبه نشریهعلمی - پژوهشی
نوع نشریهالکترونیکی
کشور محل چاپایران
نمایه نشریهISI

چکیده مقاله

The lattice Boltzmann simulation of nanofluid flow and heat transfer during natural convection within a dumbbell-shaped heat exchanger is carried out. The heat exchanger is filled with CuO–water. The KKL model is employed to predict the thermo-physical properties of nanofluid. In order to perform a comprehensive hydrothermal investigation, different post-processing approaches such as heatline visualization, total entropy generation, local entropy generation based on local fluid friction irreversibility and heat transfer irreversibility, average and local Nusselt variation are employed. In the present investigation, it is tried to present the impact of different influential parameters like Rayleigh number, solid volume fraction of nanofluid and thermal arrangement of internal fins-bodies on the fluid flow, heat transfer rate and entropy generation.

tags: Dumbbell-shaped heat exchangerCuO–water nanofluidKKL modelLattice Boltzmann methodHeatline visualization