Reply To: Jos Koopman Conundrum

[Chris Corney]

My background is electrical rather than fluids, but I’m just wondering if the de Laval nozzles in the Lempor amplifying the effect of peak flows is relevant. The is described on P92 (if I remember correctly) of “Red Devil”. I’ve come across the effect of pulsing flows on non-linear devices in electrical applications before. The effect does exist, but is very difficult to analyse mathematically. From previous comments on the “Nat Pres” forum, Jos Koopmans denies that this makes any difference, but I think it could explain any differences between calculated and measured results. I hope this is relevant to the question!