CFD analysis of jet flows ejected from different nozzles

Validation of Cfd for Containment Jet Flows including Condensation

The advanced validation of a CFD code for containment applications requires the investigation of water steam in the different flow types like jets or buoyant plumes. This paper addresses therefore the simulation of two “HYJET” experiments from the former Battelle Model Containment by CFX. These experiments involve jet releases into the multi-compartment geometry of the test facility accompanied...

Impact of rotating and fixed nozzles on vortex breakdown in compressible swirling jet flows

Vortex breakdown of swirling, round jet flows is investigated in the compressible, subsonic regime by means of Direct Numerical Simulation (DNS). This is achieved by solving the compressible Navier–Stokes equations on a cylindrical grid using high-order spatial and temporal discretization schemes. The Reynolds number is Re = ρ c w ◦ c R ◦/μ◦c = 5000 and the flow is moderately compressible with ...

CFD analysis of flow in an open-jet aeroacoustic experiment

When considering the sound emitted by a rotating machine such as an engine cooling fan, an airplane turbofan, or an air-conditioning unit, one major contributor to the overall noise is the blade trailing edge noise. It comes from the conversion of local flow perturbations at this geometric discontinuity into acoustic waves propagating in space. Depending on the flow Reynolds number (based on th...

Experimental Studies of Inverted - Profile Coaxial Jet Flows

CFD analyses of complex flows

Computational fluid dynamics (CFD) of complex processes and complicated geometries embraces the transport of momentum, heat, and mass including the description of reaction kinetics and thermodynamics. The paper outlines the numerical models available for analyzing these processes and presents examples of such methodology. The unprecedented growth in computer capability has resulted in efficient...