Experimental measurements on air jets issuing into a coaxial rough pipe

Mazarakis, G; Kollias, N; Demetriou, J; Dimitriou, D

dc.contributor.author	Mazarakis, G	en
dc.contributor.author	Kollias, N	en
dc.contributor.author	Demetriou, J	en
dc.contributor.author	Dimitriou, D	en
dc.date.accessioned	2014-03-01T02:47:21Z
dc.date.available	2014-03-01T02:47:21Z
dc.date.issued	2011	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33097
dc.subject	Air Jets In Pipes	en
dc.subject.other	Air jet	en
dc.subject.other	Axial velocity	en
dc.subject.other	Boundary shear stress	en
dc.subject.other	Circular opening	en
dc.subject.other	Exit velocity	en
dc.subject.other	Experimental measurements	en
dc.subject.other	Experimental studies	en
dc.subject.other	Flow field structure	en
dc.subject.other	In-pipe	en
dc.subject.other	Internal diameters	en
dc.subject.other	Rectangular strips	en
dc.subject.other	Roughness elements	en
dc.subject.other	Fluid mechanics	en
dc.subject.other	Jets	en
dc.subject.other	Reynolds number	en
dc.subject.other	Shear flow	en
dc.subject.other	Pipe	en
dc.title	Experimental measurements on air jets issuing into a coaxial rough pipe	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICMT.2011.6002671	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICMT.2011.6002671	en
heal.identifier.secondary	6002671	en
heal.publicationDate	2011	en
heal.abstract	In this experimental study a number of measurements are presented, analyzed and discussed, concerning incompressible air jets (issuing from circular opening d=25 mm) into coaxial rough pipes (equipped with ring rectangular strips roughness elements on the pipe boundaries, KxK with K=2.5 mm, at distances λ=25-50-100 mm) of internal diameters D=49-138-287 mm, in various combinations among them. The flow is fully turbulent, since the Reynolds numbers at the openings vary between 30,590 and 109,340, while the exit velocities Vo vary between 18.21 m/sec and 69.30 m/sec. A large number of axial velocities u and boundary shear stresses τo are measured, and the flow field structures are qualitatively presented and compared. The authors believe that the results and conclusions of this investigation may be useful to environmental, chemical and fluid mechanics pipe engineers. © 2011 IEEE.	en
heal.journalName	2011 International Conference on Multimedia Technology, ICMT 2011	en
dc.identifier.doi	10.1109/ICMT.2011.6002671	en
dc.identifier.spage	5844	en
dc.identifier.epage	5848	en