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August 2, 2026Next EnergyOpen Access

Effects of baffle configurations on heat transfer characteristics of nanofluids in a shell-and-tube heat exchanger: A numerical approach

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Authors

MIMd. Tahmidul IslamDMDipayan MondalBSBijoy Krishna Saha

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Overview

Numerical study shows staggered baffles improve heat transfer in nanofluids, indicating design efficiency.

Key Points

  • The study aims to evaluate how different baffle configurations affect heat transfer performance in heat exchangers using nanofluids.
  • Developed a three-dimensional CFD model using ANSYS Fluent 2020 R1 with the RNG k-ε turbulence model.
  • Investigated four shell-side configurations with various mass flow rates and nanofluids volume fractions.
  • Assessed heat transfer characteristics through pressure drop, friction factor, Nusselt number, and streamline contours.
  • Staggered baffles provide better mixing of shell-side flow compared to segmental baffles.
  • Nusselt number increased significantly from 110-120 to a maximum of 420 for 1% Al₂O₃ nanofluid.
  • Friction factor remained constant with slight variation (0.66–0.76) across all nanofluids tested.

Cite This Study

Islam et al. (2026) studied this question.

synapsesocial.com/papers/6a6eeaa21b0468a7eeab2df3https://doi.org/10.1016/j.nxener.2026.100852
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