Has it been accepted the the channel after the exhaust outlet meets the rules? Was there a rule specifying a 10-15 deg cone that started at the outlet that the body work could not encroach into.
Brian
hardingfv32 wrote:Has it been accepted the the channel after the exhaust outlet meets the rules? Was there a rule specifying a 10-15 deg cone that started at the outlet that the body work could not encroach into.
Brian
It's true that deposits of flo-vis don't always show low/high pressure areas because it all depends where you put it to begin with. But that shape in front of the rear tyre looks awfully like an exhaust plume. Not that it gives any indication of how strong the flow it of course.ringo wrote:I don't know how a conclusion was reached about the exhaust just because the flow vis seems greener in one area.
The same shade of green is on the front push rod and on the gearbox.
From observation, no conclusion can be drawn from this image.
CFD is the best attempt to get an idea of what the exhaust cut outs are meant to do.
Hot air expands, so cooling exhaust would actually contract. One of the principles of jet propulsion.hardingfv32 wrote: Some thing about how the exhaust flow expands as it cools.
Brian
the rubber clag off the tyres layered onto the floor could inhibit the flow vis movement. The flow vis will find it harder to move on the floor with all that rubber, so i suspect it will back up as the air pushes it.Owen.C93 wrote:It's true that deposits of flo-vis don't always show low/high pressure areas because it all depends where you put it to begin with. But that shape in front of the rear tyre looks awfully like an exhaust plume. Not that it gives any indication of how strong the flow it of course.ringo wrote:I don't know how a conclusion was reached about the exhaust just because the flow vis seems greener in one area.
The same shade of green is on the front push rod and on the gearbox.
From observation, no conclusion can be drawn from this image.
CFD is the best attempt to get an idea of what the exhaust cut outs are meant to do.
We're discussing. I havent seen anyone concluding just yet. Feel free to post your CFD data though.ringo wrote:I don't know how a conclusion was reached about the exhaust just because the flow vis seems greener in one area.
The same shade of green is on the front push rod and on the gearbox.
From observation, no conclusion can be drawn from this image.
CFD is the best attempt to get an idea of what the exhaust cut outs are meant to do.
Yeah, the outline of the flow seems to make a nice parabola. One explanation would be that we're not seeing the shape of a true exhaust plume, but rather what would be happening as the plume hits the floor, and I'd think we'd see an expansion there despite the cooling gasses.raymondu999 wrote:Maybe he's talking about how the plume is going out in a cone shape, "expanding" in that way rather than expansion due to temperature change?
I agree. Seems an awfully dramatic diversion. But see my point below about the air around the exhaust being heated. A rapid expansion of that air could explain it perhaps.Shrieker wrote:I heard some people here saying the exhaust plumes travel as fast as 600-700 km/h at the pipe's exit. Surely, bending that flow some 30-35 degrees in such a short distance would be a bit more complicated ?
Possible, but if it is "expanding" in dimensions, it will also be slowing down.raymondu999 wrote:Maybe he's talking about how the plume is going out in a cone shape, "expanding" in that way rather than expansion due to temperature change?