Near field mixing process of multi-port diffusers: Numerical modelling with quadtree grids

N. Q. Chien*, S. K. Tan

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddTrafodion Cynhadledd (Nid-Cyfnodolyn fathau)

Crynodeb

A two-dimensional vertical (2-DV) model has been set up to simulate the flow and concentration field of a merged plume emitted from a multiport diffuser. In our application, two quadtree grids were employed; one for the flow field, and the other for concentration of the solute. The quadtree grids allow refinement for hydrodynamic modelling at the proximity of the port outlet, and concentration-at the interface between the plume and ambient water. In the test with stagnant ambient water, the computed velocity and concentration widths of plume expand at a slower rate compared to those calculated from analytical formulae; the difference between simulation result and formulae for centre line velocity and for concentration are 16% and 7%, respectively. In the test with uniform ambient crossflow, the simulated trajectory is higher than that computed with DKHW, and the simulated dilution ratios are lower than those of CorMix and DKHW.

Iaith wreiddiolSaesneg
TeitlEnvironmental Hydraulics - Proceedings of the 6th International Symposium on Environmental Hydraulics
CyhoeddwrTaylor & Francis
Tudalennau1027-1032
Nifer y tudalennau6
ISBN (Argraffiad)9780415595469
StatwsCyhoeddwyd - 2010
Digwyddiad6th International Symposium on Environmental Hydraulics - Athens, Groeg
Hyd: 23 Meh 201025 Meh 2010

Cyfres gyhoeddiadau

EnwEnvironmental Hydraulics - Proceedings of the 6th International Symposium on Environmental Hydraulics
Cyfrol2

Cynhadledd

Cynhadledd6th International Symposium on Environmental Hydraulics
Gwlad/TiriogaethGroeg
DinasAthens
Cyfnod23 Meh 201025 Meh 2010

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'Near field mixing process of multi-port diffusers: Numerical modelling with quadtree grids'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

Dyfynnu hyn