The work of this paper is devoted to the two-dimensional numerical investigation of the turbulent forced convection through backward-facing step. Two cases are taken into account. For the first, the bottom wall is smooth; but for the second case, it is corrugated with a triangular base containing ten corrugations. A uniform heat flux is imposed on the bottom wall. A flow of a nanofluid consisting of silicon dioxide SiO2 nanoparticles dispersed in a base fluid (water) flows through this step.The flow equations were discretized by the finite volume method. For modeling turbulence, the K-ɛ-RNG model was applied to analyze Reynolds number effect, the volume fraction and the size of the particle. Numerical simulations were conducted for various Reynolds between 10,000 and 40,000; volume fractions of nanoparticles which vary from 0 to 5% and particle diameter dp equal to 30; 50 and 70 nm. We noted that the obtained findings are in good conformity with those of the literature.
Forced convection Turbulent flow Backward-facing step channel Corrugated channel SiO2 – water Nanofluid
Birincil Dil | İngilizce |
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Konular | Çevresel ve Sürdürülebilir Süreçler |
Bölüm | Makaleler |
Yazarlar | |
Erken Görünüm Tarihi | 24 Aralık 2023 |
Yayımlanma Tarihi | 30 Aralık 2023 |
Yayımlandığı Sayı | Yıl 2023Cilt: 26 |