High-velocity oxygen fuel (HVOF) thermal spraying uses a combustion process to heat the gas flow and coating material. A computational fluid dynamics (CFD) model has been developed to predict gas dynamic behavior in a HVOF thermal spray gun in which premixed oxygen and propane are burnt in a combustion chamber linked to a parallel-sided nozzle. The CFD analysis is applied to investigate axisymm...

This paper presents a systematic comparison of ejector performance predictions between a thermodynamic model and a Computational Fluid Dynamics (CFD) model for different operating conditions. The thermodynamic model developed by Galanis and Sorin (2016) assumes the primary flow is always choked, and irreversibilities due to viscous dissipation are taken into account through polytropic efficienc...

This work reports on an evaluation of the computational fluid dynamics–discrete element method (CFD-DEM) numerical approach to study behavior polymer-filled suspensions in a parallel-plate rheometer. For this purpose, open-source CFD-DEM solver is used model such considering different particle volume fractions and types rheology. We first validate for single-phase flow continuum phase (fluid ph...

The tank is one of the most important components in train which serves as a place to store fuel. However, so far has been component that gone unnoticed, even though there very issue consider, namely how fluid moves due movement while moving. free liquid called sloshing. Sloshing can be reduced by adding anti-sloshing baffles. So it necessary simulate sloshing taking into account value vehicle s...

Wind catchers are traditional natural ventilation systems attached to buildings in order to ventilate the indoor air. The most common type of wind catcher is four sided one which is capable to catch wind in all directions. CFD simulation is the perfect way to evaluate the wind catcher performance. The accuracy of CFD results is the issue of concern, so sensitivity analyses is crucial to find ou...

When investigating the effect of muddy seabeds on marine vessels using Computational Fluid Dynamics (CFD) software, one challenge is to adequately describe complex non-Newtonian fluid behaviour mud. Although a number rheological models have been proposed in past, mud sediments are often simply regarded either as highly viscous Newtonian fluids or Bingham many engineering applications. In this s...

A reservoir-scale numerical conceptual model was established according to the actual geological characteristics of a carbonate fractured-vuggy reservoir. Considering difference in density and viscosity fluids under reservoir conditions, CFD (computational fluid dynamic) porous medium applied simulate process nitrogen displacement after water flooding. The effects gas injection rate, mode, injec...

In this study, aeroelastic response and performance analyses have been conducted for a 5MW-Class composite wind turbine blade model. Advanced coupled numerical method based on computational fluid dynamics (CFD) and computational flexible multi-body dynamics (CFMBD) has been developed in order to investigate aeroelastic responses and performance characteristics of the rotating composite blade. R...