Without getting into a technical discussion about Reynolds number, etc.,
to achieve laminar flow would require a drammatic reduction in the flow
velocity and/or the diameter of the port..
Larry Young
Group44TR7@aol.com wrote:
>In a message dated 12/6/2004 7:51:22 AM Pacific Standard Time, BillB@bnj.com
>writes:
>But isn't the whole idea to develop laminar flow, not turbulent? At the
>point where it changes, there should be a fairly big discontinuity in flow
>rate, no?
>
>Avoiding turbulence is the whole reason we try to keep passages straight,
>smooth changes in cross-section, etc.
>Its been along time since I open a chemical engineering book. However, I seem
>to recall that the fundamental reason for keeping piping straight and rounded
>was to minimize the resistance to any type of flow. I can understand that
>would be very important to the passages leading to the combustion chamber be
>straight and smooth. But I would think that we would want some substantial
>mixing
>(turbulence) created as the fluid/gases entry in into the combustion chamber
>itself. Thereafter we would want to remove the gases as easily as possible,
>meaning as straight and smooth as possible. Seems I am missing something.
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