Nanofluids include suspension of metallic or nonmetallic nanopowders in base liquid and can be employed to increase heat transfer rate in various applications. In the present paper laminar flow forced convective heat transfer of CuO/water nanofluid in a triangular duct under constant wall temperature condition is investigated numerically. In this investigation, for the presence of nanoparticles, the dispersion model and for solving differential equations, the finite difference method is used. Numerical results indicate an enhancement of heat transfer of fluid with changing to the suspension of nanometer-sized particles in the triangular duct.

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