A shielded hot-wire probe, based on the patent of Neuerburg, was further developed to detect flow reversals in a one-dimensional pulsating flow regime for frequencies of 66 and 100 Hz. This single-sensor hot wire, partially surrounded by a tubular shield with an oblique tip, has successfully detected the intermittent flow reversals caused by the flow interruption device in a pulsating air flow rig. For the purpose of reverse flow detection, this shielded single-sensor hot-wire probe provides a cost effective and simple-to-use alternative to multisensor hot-wire probes and optical velocity measurement devices such as laser Doppler anemometry.
WestphalR. V.EatonJ. K.JohnstonJ. P.A new probe for measurement of velocity and wall shear stress in unsteady reversing flows. J. Fluids Engng, 1981, 103, 478–482.
LiY.NaguibA.An oscillating hot-wire technique for resolving the magnitude and direction of velocity measurements using single hot-wire sensors. Exp. in Fluids, 2003, 34, 597–606.
7.
NeuerburgW.Directional hot-wire probe. German Federal Republic Patents 1224546 and 1241170. DISA Info, 1969, 7.
8.
BenjaminS. F.RobertsC. A.WollinJ.A study of pulsating flow in automotive catalyst systems. Exp. in Fluids, 2002, 33, 629–639; DOI: 10.1007/s00348-002-0481-0.
9.
LiuZ.Pulsating flow maldistribution in automotive exhaust catalysts—numerical modelling and experimental correlation. PhD thesis, Coventry University, 2003.
