Flux critique en ébullition constante des jets de liquides saturés dirigés sur la zone de stagnation.

An experimental investigation was carried out for predicting the critical heat flux of convective boiling of saturated liquids for a round jet impinging on the horizontal jet stagnation zone. The model of maximum liquid subfilm thickness based on the Helmholtz instability was used to derive a semi-theoretical equation. The experimental data of four liquids: water, ethanol, R113 and R11 were employed to determine the correlation factor. The impact velocity ranged from 0.5 to 10 m/s and the diameters of the jet nozzle ranged from 3 to 10 mm. A semi-theoretical correlation was proposed for predicting CHF of convective boiling for saturated liquids jet impinging on the stagnation zone in a wide range.