[Neutrino]

Originally Posted by Alastor187

Just wondering what the gradient represents (pressure, velocity, etc?), and I am assuming red implies a lower magnitude and blue is a higher magnitude.

well unfortunatelly the place i found this photo does not give any details. However looking at it, I would venture to say its pressure. This would fit best the pattern for the nose airfoil and the expanding tunnel following it: high pressure (red) in the nose and as the air disipates in the tunnell pressure drops into green.

If that is correct it seems interesting how they focused the low presure areas between the wheels. it would be also interesting to note the high pressure area right at the back egde of the read diffuser, perhaps its where the undecarriage airflow starts to meet the top side one.