… Hence savings of the orderof the oil-to-water viscosity ratio can be achieved in lubricated
flows.Lubricated flow in an oil core is called core-annular flow, or CAF. … We callthese …

… as core annular flow or CAF. This paper provides a brief review of the past studies on oil-water
core annular flows—including studies on hydrodynamics as well as stability of flow. …

… flow and the favorable effect of buoyancy. In this paper, several aspects of core–annular flow
… First, criteria for existence of stable core flow are proposed, which show the essential role …

… The use of core-annular flow pattern, where a thin fluid … loss prediction model for core-annular
flow which includes a slip … upward-vertical and horizontal core-annular flows in a 28.4-mm-…

… core annular flow so that wavy core flow which is observed in pipelines may arise as a subcritical
bifurcation of core-annular flow… lubricated flows, though not concentric core-annular flow…

… This problem was simplified by assuming the oil viscosity to be so high that any flow inside
the … To check the validity of the model, oil-water core-annular flow experiments have been …

With the increasing demand for heavy oil, core annular flow (CAF) is an economical method
to transport heavy oil, and many researchers have explored the energy-saving aspects of …

… Hence, one of our goals is to establish the differences between miscible core–annular flows
and their plane counterparts. Scoffoni, Lajeunesse & Homsy (2001) describe experimental …

… on the stability of core-annular flow of two … flow of two fluids. The introduction given there
serves well here. As in PCJ, we consider the problem of linearized stability of core-annular flows …

… This paper reports the results of experiments on core-annular flow in a vertical pipe and
correlates the observations with the results of computations using ideal theory and the linear …