Quote:
Originally Posted by ninetres
What I meant (and obviously wasn’t clear enough) was that it’s absolutely 100% patently false to disregard cross sectional diameter if it isn’t of substantial length. Diameter effects exhaust flow/pressure at any length. As you said, it’s part of a mathematical equation. It isn’t magically “removed” from the result if the length is under X amount of length.
My take-away from the original post we are hashing our was that the flow is not effected if the “restriction” doesn’t reach a certain length. It does. Regardless of length, there will be an effect.
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Agreed, and it appears that we might have been looking at the way the original post was phrased a little differently.**
What's left once we see that crimped region (and what actually matters) is whether or not the effects from it are significant. Seems a lot of people think it does simply because it looks like it should, and these people generally lack the analytical tools to either justify or debunk it on their own. Not that others being ready and willing to take advantage of that belief by pitching it in their advertising is helping.
** I used to review technical documents prior to issue as part of my day job, so maybe I still basically see things differently from most even though I'm over 5 years retired.
Norm