TF & Speedmaster Flow Tests
Yeah, I think it is the flow separation/turbulence getting progressively worse as the valve is opened. The valve is actually containing the separation and giving 'walls' or structure to the flow. When the valve is out of the way enough it becomes a free for all.
Here's one more chart that compares the SM to the TF. Same thing happens at the same time on both heads.
You mentioned earlier and perhaps you are correct that the best I can hope for is to minimize the zeros on the flow charts. It may be impossible to eliminate them, even on a head that does not back up.
BTW, the circles on these charts do not represent the valve. It's the computer's way of storing and displaying data. The top number is the pitot reading at the seat, then going clockwise each number is another pitot reading at 0.100" further distance from the seat.
I knew what you meant, just couldn't let the moment go by quietly.
Yeah, I think it is the flow separation/turbulence getting progressively worse as the valve is opened. The valve is actually containing the separation and giving 'walls' or structure to the flow. When the valve is out of the way enough it becomes a free for all.
Here's one more chart that compares the SM to the TF. Same thing happens at the same time on both heads.
You mentioned earlier and perhaps you are correct that the best I can hope for is to minimize the zeros on the flow charts. It may be impossible to eliminate them, even on a head that does not back up.
BTW, the circles on these charts do not represent the valve. It's the computer's way of storing and displaying data. The top number is the pitot reading at the seat, then going clockwise each number is another pitot reading at 0.100" further distance from the seat.