A calculation method is presented to analyze the two-phase flow distribution of parallel channels in a manifold with a radical inlet.The mathematical models of impacting and dividing T-junction are applied to predict the two-phase separation

providing a calculation procedure for the two-phase flow distribution of parallel channels in a manifold with a radical inlet.In order to verify the reliability of the calculation procedure

the calculation results are compared with experimental results in a manifold with a radical inlet and four parallel channels

which shows a good agreement within about ±20% accuracy.The uncertainty between the experimental and calculation results is analyzed using high speed camera and numerical prediction of CFD.The flow recirculation occurs at the rear part of the manifold

which should be considered in order to improve the accuracy of the calculation method.