Oblique inlet pressure loss for swirling flow entering a catalyst substrate

Stereoscopic PIV measurements of swirling flow entering a catalyst substrate

“…The findings vary between the limiting cases outlined by Küchemann and Weber [5]. Using the same experimental rig as presented in this study, Persoons et al [6] have derived a correlation for the oblique inlet pressure loss for an unwashcoated automotive catalyst (cell density 400 cells per square inch, wall thickness 4:3 Â 10 À3 in. ):…”

“…Persoons et al [6] indicated its importance with respect to the oblique inlet pressure loss and the flow uniformity in these devices. Furthermore, it proved very difficult to obtain velocity data sufficiently close to the catalyst using laser-Doppler anemometry (LDA) [6].…”

“…Persoons et al [6] indicated its importance with respect to the oblique inlet pressure loss and the flow uniformity in these devices. Furthermore, it proved very difficult to obtain velocity data sufficiently close to the catalyst using laser-Doppler anemometry (LDA) [6]. As such, this paper aims to establish an experimental methodology using stereoscopic particle image velocimetry (PIV) to obtain detailed three-component velocity data in the flow stagnation region.…”

“…The reason for the lower proportionality coefficient remains as yet unclear [6]. A further investigation of the oblique inlet pressure loss requires detailed velocity information in the immediate vicinity of the inlet face, both upstream and inside the channel.…”

“…Persoons et al [6] discuss the available literature on the oblique inlet pressure loss. The findings vary between the limiting cases outlined by Küchemann and Weber [5].…”