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Homework Help: Modeling: Light irradiance and spatio-temporal decay

  1. Jan 13, 2015 #1
    Hello everyone!

    1. The problem statement, all variables and given/known data

    I want to model the irradiance on a fluid element while it is flowing, from a fixed(above or below) light source that has an irradiance that shows first order decay with time and from x-naught to x-infinity .

    here are the assumptions:
    -Laminar flow at fixed rate (in x-direction)
    -fluid element in fixed y-value from light source (above or below, doesnt matter.
    -reflection/scatter effects are insignificant
    -flow is in a tube (differential irradiance in y-direction)

    2. Relevant equations
    first order decay.

    3. The attempt at a solution

    I would like some direction regarding the best approaches to model such a situation, and am comfortable with solving differential equations. Thank you so much!
  2. jcsd
  3. Jan 19, 2015 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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