forty-two wrote:
I don't think that the sidepod inlet size versus outlet size will actually accelerate the air coming out the back per-se, perhaps the pressure will be increased, but if anything surely the speed of the outlet air will be reduced somewhat? Think about it, if you pour water into a funnel with a tiny neck, it doesn't seem to come out any faster if you fill the funnel.
I'm sure that some of the esteemed aero-nuts on this forum will be able to set me straight though!
I think it's quite a wrong comparison. You try to compare gas with a liquid. And while water (liquid) would behave almost like a solid body under compression, gas on the opposite has a huge coefficient of compression and expansion.
Sorry, if I am wrong, I'm not a specialist, but I know this from the principle my Xantia's suspension works on.
In addition, you don't change the energy level of the water, pouring it through a funnel. Cool air taking heat from the radiators and other blown hot components means it gets energy.