ON THE FORMATION OF A GRADIENT-VELOCITY FIELD IN STATIONARY FLOWS OF VISCOUS AND BINGHAM FLUIDS

This article is devoted to considering the problems of formation of a gradient-velocity fi eld in stationary cylindrical fl ows of viscous and visco-plastic fl uids. Based on the analysis of a new physical model of fl ow, it was found that in the transverse direction in the fl ows of viscous and Bingham fl uids, a gradient of static pressure is created, which generates a fi eld of Bernoulli forces directed from the periphery of the fl ow to its axis. A characteristic feature in the formation of the pressure and velocity gradient during the fl ow of viscous and Bingham fl uids is shown. It is noted that in sight the use of a new fl ow model can contribute to the creation of more effi cient technologies in extraction and transportation of multiphase heterogeneous systems
This article is devoted to considering the problems of formation of a gradient-velocity fi eld in stationary cylindrical fl ows of viscous and visco-plastic fl uids. Based on the analysis of a new physical model of fl ow, it was found that in the transverse direction in the fl ows of viscous and Bingham fl uids, a gradient of static pressure is created, which generates a fi eld of Bernoulli forces directed from the periphery of the fl ow to its axis. A characteristic feature in the formation of the pressure and velocity gradient during the fl ow of viscous and Bingham fl uids is shown. It is noted that in sight the use of a new fl ow model can contribute to the creation of more effi cient technologies in extraction and transportation of multiphase heterogeneous systems
Author:  G. G. Ismayilov, E. Kh. Iskandarov, and F. B. Ismayilova
Keywords:  pressure gradient, velocity gradient, viscous fl uid, Bingham fl uid, rheology, shear stress, multiphase
Page:  503