Fully developed turbulent mass transfer in a triangular duct with a narrow apex angle.

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Fully developed turbulent mass transfer in an isosceles triangular duct with a narrow apex angle was analyzed using the P-function proposed by Jayatilleke. Predicted results were compared with the experimental results of local and averaged mass transfer measurements by means of the electrochemical method. Although the predicted distributions of local mass transfer coefficient were similar to the experimental results, present analysis fialed to predict quantitatively the averaged mass transfer coefficient in an isosceles triangular duct. The disagreement between the prediction and experimental results was attributed to the change of turbulence structure in a turbulent triangular duct flow. The decrease of turbulent intensity and the increase of large eddy scale near the wall were detected by the electrochemical technique.
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