Laminar air flow in a 2D channel - how to ensure that a flow is fully developed?

  1. Hello everyone,
    I am studying laminar airflow in a channel (2D) and trying to simulate it with FLUENT software but I need to know about the entrance length, and I want to know how I can be sure that a flow is fully developed? is it just by looking at the velocity profile? or looking at the temperature contour?
    I am tracking an article which has done numerical study for a smooth channel and a baffled channel. the Nu number for a smooth channel (100<Re<600) is around 7.54 and I am trying to reach this value but I should make sure about the Entrance Length first.

    the formula for a laminar flow in a channel to obtain the entrance length is: l=0.05*Re_D*D_h
    but this formula will not give me the desired results.
    would anybody help me?
    Thank You
  2. jcsd
Know someone interested in this topic? Share this thead via email, Google+, Twitter, or Facebook

Have something to add?

Draft saved Draft deleted