Numerical simulations of oil contaminant transport in sandy coastal aquifers
This presentation is the property of its rightful owner.
Sponsored Links
1 / 26

Numerical simulations of oil contaminant transport in sandy coastal aquifers PowerPoint PPT Presentation


  • 67 Views
  • Uploaded on
  • Presentation posted in: General

Numerical simulations of oil contaminant transport in sandy coastal aquifers. Presenter : Yi-Ming Wei Adviser : Chuen-Fa Ni Date : 2011/04/21. Outline. Motivation Objectives Methodology Test example Future work. Motivation. With the increasing developments of tourist and industrial

Download Presentation

Numerical simulations of oil contaminant transport in sandy coastal aquifers

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Numerical simulations of oil contaminant transport in sandy coastal aquifers

Presenter:Yi-Ming Wei

Adviser:Chuen-Fa Ni

Date:2011/04/21


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Outline

  • Motivation

  • Objectives

  • Methodology

  • Test example

  • Future work


Motivation

Motivation

  • With the increasing developments of tourist and industrial

    estates in coastal area,different sources of contaminants

    can be discharged into the sea.

  • Marine pollution:Oil spills happen when people make

    mistakes or are careless andcause an oil tanker to leak

    oil into theocean.


Numerical simulations of oil contaminant transport in sandy coastal aquifers

彭薩科拉海灘(Pensacola)


Objectives

Objectives

  • when a petroleum spill reaches the beaches, there may be

    deeper penetration in the soil, which depends on sand grain

    size, so causing serious damages to the ecosystem.

  • how much and how deep oil is transported into the beaches.

  • Whether oil polluted groundwater or not.

    (3)Other factor of influence oil transportation : tidal、wave、

    beach slope、pumping well、recharge water …


Methodology hydrogeochem 2d

Methodology-HYDROGEOCHEM-2D

  • Acoupled model of fluid flow, thermal transport, and

  • HYDROGEOCHEMical transport through saturated-

  • unsaturated media.

  • Deal with equilibrium and kinetic reaction in terms

  • of reaction networks.

  • Incorporate the effect of precipitation /dissolution

  • on the change of pore size, hydraulic conductivity,

  • and diffusion/dispersion.


Numerical simulations of oil contaminant transport in sandy coastal aquifers

  • Flow Equations


Numerical simulations of oil contaminant transport in sandy coastal aquifers

  • Reactive Chemical Transport Equations

The rate of mass accumulation

The net rate of mass flux due to advection

The net mass flux due to dispersion and diffusion,

The source/sink term corresponding to artificial

injection and/or withdrawal

The rate of mass production and reduction due to chemical reactions and radioactive decay


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Test example

Pressure head

= 85m

Variable boundary condition

Pressure head

= 84m

100 m

400 m

Impermeable bottom


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Slope

1.0 mole/liter ( C6H6)

Beach slope = 0.2、0.3

Pressure head

= 85m

Pressure head

= 84m

No rainfall

100 m

400 m

Impermeable bottom


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Total head

Beach slope = 0.2

Beach slope = 0.3


Numerical simulations of oil contaminant transport in sandy coastal aquifers

12day

Beach slope = 0.2

Beach slope = 0.3


Numerical simulations of oil contaminant transport in sandy coastal aquifers

27day

Beach slope = 0.2

Beach slope = 0.3


Numerical simulations of oil contaminant transport in sandy coastal aquifers

46day

Beach slope = 0.2

Beach slope = 0.3


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Recharge

I= 0.01m/day

Beach slope = 0.2

Pressure head

= 85m

Pressure head

= 84m

100 m

400 m

Impermeable bottom

1.0 mole/liter ( C6H6)


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Total head

No rainfall

I= 0.01m/day


Numerical simulations of oil contaminant transport in sandy coastal aquifers

27day

No rainfall

I= 0.01m/day


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Pumping well

1.0 mole/liter ( C6H6)

Beach slope = 0.2

Pressure head

= 85m

Pressure head

= 84m

No rainfall

100 m

400 m

Impermeable bottom

-20 m2/day(抽水)


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Total head

no pumping well

pumping well


Numerical simulations of oil contaminant transport in sandy coastal aquifers

27day

no pumping well

pumping well


Numerical simulations of oil contaminant transport in sandy coastal aquifers

46day

no pumping well

pumping well


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Future work


Numerical simulations of oil contaminant transport in sandy coastal aquifers

Thanks for your attention


  • Login