Eulerian-Eulerian computational fluid dynamic (CFD) models allow the prediction of complex and large-scale industrial multiphase gas–liquid bubbly flows with a relatively limited load. However, interfacial transfer processes are entirely modelled, closure relations that often dictate accuracy entire model. Numerous sets closures have been developed, optimized over few experimental data achievin...

Simulating fluid flow at micro level is an ongoing problem. Simplified macroscopic flow models like Darcy’s law is unable to estimate fluid dynamic properties of porous media. The digital sample reconstruction by high resolution X-ray computed tomography scanning and fluid-dynamics simulation, together with the increasing power of super-computers, allow to carry out pore-scale simulations throu...

A two fluid model (TFM) was used to study gas-solid heat transfer in a riser with different inclination angles. A two dimensional pipe with 5.8 cm internal diameter and 5 meter length was chosen.  Effect of bed angle and solid particles feed rate were studied on the heat transfer behavior of gas and solid particles. Obtained results from simulation are compared with the experimental data in the...

A computational fluid–solid dynamic model is employed to simulate the interaction between water waves and a consolidated ice cover. The solves Navier–Stokes equations for ocean-wave flow around solid body, behavior formalized by Maxwell viscoelastic model. Model predictions are compared against experimental flume tests of interacting with plates. decay rate wave dispersion predicted shown be in...

Abstract Introduction Obstructive sleep apnea (OSA) is a common disorder which may need surgery to widen the airway. However, success rate of variable. Thus, it necessary predict outcome preoperatively. The purpose this study evaluate mechanical parameter upper airway airflow in OSA patients using computational fluid dynamics (CFD) method. Method We conducted on with snoring, underwent full nig...