Quote:
Originally Posted by 406pat
I'm new here so feel free to let me know if this is a dead horse.
Has anyone considered using a rough surface on a truck topper rather than a smooth one? Having a rough surface would create a turbulent boundary layer and this could possibly allow a greater angle on the truck topper due to the effect a turbulent boundary layer has on separation.
Any thoughts on this?
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All the air is already in turbulent boundary layer,as the critical velocity for this with vehicles occurs around 20-mph.
Turbulators would allow a steeper cap angles without separation,but then you'd be losing valuable space inside the bed underneath.
22-degrees is the magic number.You don't want to exceed it.