Numerical Simulation of the Flow Characteristic with Different Geometrical Jet

Radial distributions of turbulent kinetic energy k in the tank with different geometrical jet flows was predicted based on CFD method adopted RNG k - ε turbulent model. Some detailed information about turbulence kinetic energy and pressure was obtained. The results showed that at the plane of z=0, p...

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Bibliographic Details
Main Authors: Meng Hui-bo, Yu Yan-fang, Wu Jian-hua
Format: Conference Proceeding
Language:English
Subjects:
Chemical technology
Computational fluid dynamics
Distributed computing
Educational institutions
Equations
Jet mixer
Kinetic energy
Mean velocity
Mechanical engineering
Numerical simulation
Predictive models
Solid modeling
Turbulence kinetic energy
Turbulent flow
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Summary:Radial distributions of turbulent kinetic energy k in the tank with different geometrical jet flows was predicted based on CFD method adopted RNG k - ε turbulent model. Some detailed information about turbulence kinetic energy and pressure was obtained. The results showed that at the plane of z=0, pressure did not change significantly and the value was small. With the increase of the distance x, the turbulent kinetic energy enlarged first and then reduced. Turbulent kinetic energy was suddenly reduced above the jet height at x=0. Under the same velocity and the nozzle clearance, the turbulent kinetic energy of flat -bottom was the smallest, and the turbulent kinetic energy of hemispherical-bottom was the largest. Under the same velocity, the pressure of hemispherical-bottom was the largest, wherever the pressure of flat-bottom was the smallest. The results can be theoretical basis for the optimum design and scale-up of the jet mixer.
ISSN:2160-7443
DOI:10.1109/ICIC.2010.271