... allowed accurate assignment of the signals from the Constant Temperature Anemometry (CTA) to the corresponding positions in the slug body. Experimental evidence shows that arrival of the slug fronts do not indicate an immediate increase in the wall shear stress at the bottom of the pipe. NOMENCLATURE...

... axial velocity profiles in the slug, as a function of the distance to the slug front, and (ii) mean axial velocity profiles in the liquid film, as a function of the distance to the slug tail. Based on the velocity profiles, the wake of the gas pocket into the slug can be characterized, and the wall...

...-dimensional physics of the slug fronts and tails. The slug tail (or bubble nose) velocity is typically specified by a semi-mechanistic model based on physical arguments and tuned to experimental data (16). The intense mixing at the breaking slug front is modelled through a correlation for the rate of gas...

... if the mean steady state pressure gradient is predicted with acceptable accuracy. 3.1 A new gas entrainment model for slug fronts Based on high speed video recordings, a new model for gas entrainment for slug flow has been developed. The model accounts for the four different processes shown in Figure 5. 1...

... section upstream oil & gas fraction multiphase 16 machine learning production control production monitoring slug liquid holdup slug front viscosity artificial intelligence liquid viscosity multiphase flow reservoir surveillance correlation mechanism valve slug flow slug body bhr...

... 3 shows the slug front, slug body and slug tail for two different liquid viscosities, 0.590 Pa.s and 0.182 Pa.s at vSg=1.5 m/s and vSL=0.1 m/s. The low liquid viscosity slug (Slug A) shows turbulence and mixing in the slug front due to the high slug Reynolds number. On the other hand, the high...