Abstract:
The structure of upward bubbly flow in an inclined circular tube was studied experimentally. Local gas content profiles were obtained using a point conductivity sensor. Wall shear stress was determined using the electrodiffusion method. It was shown that the orientation of the tube has a significant effect on the local characteristics of gas-liquid flow. In the upper part of the inclined tube, a significant increase in gas phase concentration occurs, leading to higher maximum values of local gas content near the wall and increased wall shear stress compared to single-phase flow. The most significant increase in shear stress occurs at inclination angles from 40$^{\circ}$ to 60$^{\circ}$.
Keywords:local characteristics, inclined channel, two-phase flow, local gas content.
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