CuO–Cu/water hybrid nonofluid potentials in impingement jet

Abstract The present study considered an impingement jet using hybrid nanofluid CuO–Cu/water. A single rounded nozzle was used to impinge a turbulent coolant (water) on the hot circular plate at Reynold’s number range of (5,000–15,000). CuO–Cu nanoparticles were physically synthesized 50 nm size and dispersed by one-step preparation method. experimentations conducted with nanoparticle concentrations (0.2–1%) volume. results showed that presence exhibits significant improvement in overall thermal performance working fluid. Where gained heat interpreted Nusselt found be 2.8% (in comparing deionized water) ϕ = 1% Re 15,000, while minimum gain 0.93% 0.2% 5,000. Furthermore, it noted excessive increase concentration causes more pumping power consumption. Moreover, residual layer formed high concentration, which acts as insulation hinders exchange. It also threshold nozzle-to-plate spacing is H 4, before which, positive, negative plummet after.