air flow vs. textured paint?

[TnT_Sounds 10+ year member]

I ran my ass across it once.

I've always wanted to try that

Instead, I had a brilliant idea to ride from a 3 story roof top to a 2 story roof and slid on my ass.

You think it feels the same?//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

 

[TnT_Sounds 10+ year member]

In many applications where volumetric efficiency is key smooth surfaces can be counter productive. There are obviously many variables, but smooth surfaces typically have the most surface tension. Considering the air speeds in a sub application I would expect it to be negligable. Sand-casted surfaces will often out perform a smooth bore . Look up Laminar flow for some interesting reading.

You seem quite intelligent sir!//content.invisioncic.com/y282845/emoticons/veryhappy.gif.fec4fed33b4a1279cf10bdd45a039dae.gif

 

[mlo 10+ year member]

also think of a golf ball or when nascar started putting dimples in the chambers of cylinder heads to improve airflow.
Until someone builds an enclosure and tests it out smooth and then paints it with textured paint it's pretty much speculation...

Well sort-of...The dimpling in combustion chambers is typically to promote mixture tumble and dispersion...especially at high rpm's.

Another huge influence on flow such as these ports would be entrance and exit shape. You can fool/manipulate things...

There is tons of imperical data on this subject that can be drawn from.