(adsbygoogle = window.adsbygoogle || []).push({}); Help on analytical model of tracer dispersion in a vertical porous plane !!

Dear all,

I am meeting with a problem, that is how to establish thediffusion equationfor the transport of tracer in a vertical porous plane, in which we inject tracer at the bottom (I) and produce at the top (P) of plane. (see the figuge)

http://upnhanh.sieuthinhanh.com/userimages/images/sieuthiNHANH2009052013921mzvjm2m4mg13266.jpeg [Broken]

The plane is initially saturated by water. Then we inject dye tracer at I, tracer step by step moves from bottom to the top under gravity effect and produce at P. But, I don't know how can we treat the gravity in the diffusion equation??

dC/dt + u.dC/dx = D.d2C/dx2

Looking forward to helping from all of you.

Thank you in advance!!

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Help on analytical model of tracer dispersion in a vertical porous plane

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads - Help analytical model | Date |
---|---|

I Need a help in solving an equation (probably differentiation | Nov 20, 2017 |

A Need help with a differential equation | Oct 9, 2016 |

A Help solving non-linear ODE analytically | Sep 8, 2016 |

Unable to solve a nonlinear DE analytically help needed | Apr 15, 2012 |

Help: analytical of 2nd order PDE | Oct 29, 2011 |

**Physics Forums - The Fusion of Science and Community**