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Choosing model for plume into stratified pond.
I am trying to decide on a model to use. The goal of the project is to model the change in stratification in a pond when warm water is injected as a jet. It is important that buoyancy effects and the jet are accurately modeled but I want to know long term (order days, not weeks) influences on pond stratification.
I initially though about using Fluent, but the period of interest is of order days while inflow duration is of order hours. I think the timesteps constraints will make using Fluent not unfeasible. I am only interested in vertical dynamics so a 2D-model is fine. CE-QUAL-W2 is a laterally averaged 2D model for environmental purposes and is designed for longer time scales. I may be able to crank up the resolution and try to model the inflow, but I am not sure if this is appropriate. Does anybody have any advice on what model to select for this project? Words of wisdom will be greatly appreciated! |
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I am not sure to understand your flow problem... I assume the flow is turbulent, isn't it? So, are you sure the 2D RANS makes sense? However, I worked on buoyancy-induced flow but using LES, may you can find some help in the references cited in: - Ocean Modelling, Vol. 17, pp. 199-218 (2007) - http://link.springer.com/article/10....162-010-0202-x |
Thanks Filippo,
That is cool work, but I don't think I need that much detail! I need to investigate how the lake stratifies, generally. LES is way too computationally expensive for this purpose. RANS should do just fine. I am not sure though if the 2D approach is appropriate. |
Maybe there is an ocean-type model which will work. Any ideas?
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also, one of my collegues worked on flow in lakes, see the references
http://www.szn.it/SZNWeb/cmd/ShowArc...=HUMANRESOURCE |
I guess I can't rule Flow-3D out either. But I am still concerned that Flow-3D and Fluent are not appropriate for a multi-day simulation.
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