Akademik Veri Yönetim Sistemi
Heat Transfer Engineering, 2025 (SCI-Expanded)
Forced convection heat transfer and entropy productions of single-walled carbon nanotubes (SWCNT) immersed in water for various wavy channels have been investigated numerically under turbulent flow conditions. This study aims to provide a new thermal management approach for compact thermal systems through the combination of two different strategies (shifted wavy wall and nanofluids). Therefore, the novelty of this study lies in its comprehensive numerical investigation of both single and two-phase turbulent flow of SWCNT -water nanofluids in modified shifted wavy channels. Homogeneous single-phase model (SPM) and discrete two-phase model (DPM) are implemented to simulate turbulent nanofluid flows. The governing equations for both models are solved computationally using the finite volume approach. Turbulent flows were analyzed in the range of Reynolds numbers from 4000 to 10,000 through a smooth channel and three different shifted wave channels. SWCNT nano-scale particles impregnated in water with two-volume concentrations were used and compared with pure water. The major finding reveals that the largest thermal performance factor was acquired for the wavy channel with a phase shift of 180° at the Reynolds number of 4000. It was found that the DPM offers a reasonable prediction of both thermal and entropy characteristics of SWCNT-water nanofluid compared to the SPM. Eventually, it is advised to utilize SWCNT-water nanofluid in a wavy channel with a Particle volume fraction of 3% as a result of high thermal performance and low entropy generation.