1 / 8

Modeling Pb++ Transport in Dual Porosity Aquifer with Variable Inlet Fluid Composition

This study outlines an advanced model for simulating lead (Pb++) transport in a dual porosity aquifer. The model defines inlet fluid characteristics over two distinct intervals—initially introducing Pb++ from 0 to 2 years, followed by clean rinse water until 10 years. The aquifer spans 1 km, segmented into 400 nodal blocks, allowing for precise flow rate adjustments and mass transport calculations. The dual porosity framework incorporates both free-flowing and stagnant zones, providing insights on hydrodynamic dispersion and contaminant behavior in complex subsurface environments.

kristy
Télécharger la présentation

Modeling Pb++ Transport in Dual Porosity Aquifer with Variable Inlet Fluid Composition

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Specify domain’s starting fluid composition on the Initial pane Clean water Start and end times of two reaction intervals

  2. Inlet fluid enters the domain from t = 0 to 2 years Inlet fluid carries Pb++pulse into the domain

  3. Inlet 2 fluid enters the domain from t = 2 to 10 years Clean rinse water: negligible Pb++in the second inlet fluid

  4. Specify domain size, gridding, and flow rate on the Domain pane. Domain is 1 km long, divided into 400 nodal blocks Set flowrate for 1st and 2nd reaction intervals Set specific discharge or head drop

  5. Set various mass transport properties on the Medium pane. Porosity of the free-flowing zone. Used to calculate coefficient of hydrodynamic dispersion.

  6. In a dual porosity model, each nodal block is divided into a free-flowing zone and a stagnant zone. Config → Dual Porosity… On/off toggle 40% of the aquifer is stagnant. Characteristic dimension of the stagnant zone Run → Go traces the model

  7. Pb++travels from one nodal block to another only through the free-flowing volume, but it can diffuse into and out of the stagnant zones.

More Related