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Experimental study of heat transfer characteristics in oscillating fluid flow in tube

ABSTRACT In the present work, an experimental investigation of heat transfer enhancement parameters of the oscillating flow heat exchanger under different frequencies, tidal displacement, and heat fluxes is carried out. The effect of different parameters on experimental effective thermal conductivity and convective heat transfer coefficient in cooling region is studied using correlations given by different researchers. A correlation for experimental effective thermal conductivity in terms of S2√ω is derived based on experimental data. This correlation is useful for predicting the optimum value of S2√ω before onset of turbulence.