Entropy generation analysis of nanofluid heat transfer in dimpled heat exchangers
Abstract
Abstract Enhancing thermal performance while minimizing thermodynamic losses in compact heat exchangers remains a critical challenge in modern energy systems, with limited understanding of synergistic effects between dimpled surfaces and nanofluids, particularly regarding entropy generation characteristics. This study investigates how shallow dimpled geometries (depth‐to‐diameter ratios δ / D = 0.1–0.3) combined with Al 2 O 3 –water and CuO–water nanofluids influence entropy generation patterns and identifies optimal configurations that minimize irreversibilities while maximizing heat transfer performance. Computational fluid dynamics simulations coupled with second‐law thermodynamic analysis were performed across Reynolds numbers 500–3000 and nanoparticle volume fractions 0%–4%, with comprehensive validation against published data (deviations
Fields of Study & Subjects
Nanofluid Flow and Heat Transfer
Heat Transfer and Optimization
Heat Transfer Mechanisms
Publication details
- Journal / source
- The Canadian Journal of Chemical Engineering
- Publisher
- Wiley
- Volume
- 104
- Issue
- 9
- Pages
- 5133–5148
- Publication date
- 17 February 2026
- Language
- EN