Browse Publications Technical Papers 2020-01-1109
2020-04-14

3-Dimensional Numerical Simulation on CuO Nanofluids as Heat Transfer Medium for Diesel Engine Cooling System 2020-01-1109

CuO-water nanofluids are utilized as heat transfer medium in the cooling system of the diesel engine, 3-dimensional numerical simulation about flow and heat transfer process in the cooling system of engine is actualized for 0.5%, 1%, 3% and 5% mass concentration of nanofluids. The trajectory of the discrete particles of solid-liquid two-phase flow is tracked by turbulent stochastic tracking. The concentration field distribution, velocity field distribution, internal energy change, residence time, total heat exchange and water pressure drop between the inlet and the outlet of CuO particles of nanofluids with different mass concentrations are obtained. The calculated results show that the cooling performance of diesel engine can be significantly improved by using CuO-water nanofluids as heat transfer medium. With the increase of nanoparticle concentration, the heat dissipation capacity of diesel engine is enhanced, while the power loss of pump is increased just in a small area. The correlation between the average residence time of CuO particles in water jacket and its concentration is not obvious, and the correlation between heat transfer efficiency and the flow rate of nanofluids is also not obvious.

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