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The Effects Of A Drag Reducing Polymer On The Turbulent Boundary Layer Of A Submerged Flat Plate
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Book Synopsis The Effects of a Drag Reducing Polymer on the Turbulent Boundary Layer of a Submerged Flat Plate by : Stanley M. Kumor
Download or read book The Effects of a Drag Reducing Polymer on the Turbulent Boundary Layer of a Submerged Flat Plate written by Stanley M. Kumor and published by . This book was released on 1973 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary objective of an experimental investigation was to study the effect that a drag-reducing polymer has on the turbulent boundary layer of a submerged flat plate using a Laser-Doppler flowmeter. Data are presented showing the time effects caused by polymer solution drag-reduction degradation on the mean velocity and axial fluctuating-velocity profiles. The importance of the data is that it provides a connection between the apparently diverse results reported previously for the velocity profiles at conditions of high and low drag-reduction effectiveness. The polymer molecules' effect on the boundary layer structure is apparently progressively restricted to the near wall region with decreasing drag reduction in agreement with the mean velocity profiles. (Author).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Hydraulic Research in the United States and Canada by : United States. National Bureau of Standards
Download or read book Hydraulic Research in the United States and Canada written by United States. National Bureau of Standards and published by . This book was released on 1978 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1918 with total page 1164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Drag Reduction in Polymer Solutions by : American Institute of Chemical Engineers
Download or read book Drag Reduction in Polymer Solutions written by American Institute of Chemical Engineers and published by . This book was released on 1973 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report by : United States. National Bureau of Standards
Download or read book Report written by United States. National Bureau of Standards and published by . This book was released on 1968 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydraulic Research in the United States 1968 by : United States. National Bureau of Standards
Download or read book Hydraulic Research in the United States 1968 written by United States. National Bureau of Standards and published by . This book was released on 1969 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Current Hydraulic Laboratory Research in the United States by :
Download or read book Current Hydraulic Laboratory Research in the United States written by and published by . This book was released on 1970 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Ejected Polymer Solutions on the Resistance and Wake of a Flat Plate in a Water Flow by : Richard H. Love
Download or read book The Effect of Ejected Polymer Solutions on the Resistance and Wake of a Flat Plate in a Water Flow written by Richard H. Love and published by . This book was released on 1965 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation was made into the effects of injecting non-Newtonian fluids into the turbulent boundary layer of a flat plate. The ejection of weakly viscoelastic solutions of a macromolecular polymer at the leading edge of the plate decreased its drag coefficient by as much as 50%; the Reynolds number of the plate was 1.8 x 10 to the 6th power. It was found that for a given ejection rate and free stream velocity there was a solution concentration for which the drag coefficient was a minimum. It is conjectured that the relatively sharp loss of effectiveness for higher concentrations may be due to insufficient mixing of the additive into the turbulent boundary layer. Ejection of neutrally buoyant spherical particles, not too much larger than the macromolecules, had no effect on the drag of the plate, indicating that the drag reduction is probably associated with the viscoelastic properties of the solutions studied. (Author).
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1975-03 with total page 898 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1970 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Civil Engineering Hydraulics Abstracts by :
Download or read book Civil Engineering Hydraulics Abstracts written by and published by . This book was released on 1974 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Additives for Improvement of Oil Spill Control, August 1974 by : United States. Coast Guard
Download or read book Chemical Additives for Improvement of Oil Spill Control, August 1974 written by United States. Coast Guard and published by . This book was released on 1974 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Viscous Drag Reduction by : C. Sinclair Wells
Download or read book Viscous Drag Reduction written by C. Sinclair Wells and published by Springer. This book was released on 2013-12-20 with total page 497 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIChE Symposium Series by : American Institute of Chemical Engineers
Download or read book AIChE Symposium Series written by American Institute of Chemical Engineers and published by . This book was released on 1972 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1975 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental Study of Polymer Drag Reduction and Boundary Layer Diffusion Characteristics for Incompressible Flow Over a Flat Plate by : John Miguel
Download or read book An Experimental Study of Polymer Drag Reduction and Boundary Layer Diffusion Characteristics for Incompressible Flow Over a Flat Plate written by John Miguel and published by . This book was released on 1978 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drag reduction by injection of high molecular weight polymers into boundary layers has been demonstrated repeatedly in the past. However, from a volume utilization tradeoff standpoint, the quantities of polymer required make the gains achieved by this process marginal. While indicating reduced polymer requirements for drag reduction, limited data obtained from pipe flow and external boundary layer flow experiments are conflicting and hard to interpret. Ambiguities in measurement techniques due to polymer effects on commonly used instrumentation and opposing features of varied flow facilities have also contributed to making these earlier works contradictory and difficult to resolve. Experiments performed in this research indicate that turbulence intensity distributions are altered by the addition of polymer in such a way that the peak of turbulence production is lowered and its location moved away from the wall. The transition region is delayed and extended by the addition of polymer to the boundary layer. The laminar sublayer of boundary layer profiles appears to have thickened due to the addition of polymer. When compared to the law of the wall corrected for developing flow, the velocity profiles also show evidence of a thickened sublayer.