抄録
In this paper, theoretical analysis on flow behavior of snow-water mixtures in pipes was made by using the plug flow model. Bingham flow model was used as the flow model with the plug, and the pressure loss of the flow and the coefficient of the pressure loss were obtained as Eq.(12) and Eq.(23) respectively.
The values calculated from Eq.(23) were compared with the experimental results by Shirakashi et al. And it was found that the values calculated from Eq.(23) are in good agreement with the experimental ones as shown in Fig. 5.
The negative values were obtained in the experiments of the coefficient of the pressure loss by Shirakashi et al. at higher velocities, but the empirical equation (34) obtained by Shirakashi et al. were always positive. Therefore, they modified Eq.(34) and proposed Eq.(35). On the other hand, the model proposed in this paper shows the negative values at higher velocities. So, it was confirmed that the plug flow model proposed in this paper is reasonable.
