Vortex‐Tube Sediment Extractors. II: Design
This article is a reply.
VIEW THE ORIGINAL ARTICLEPublication: Journal of Hydraulic Engineering
Volume 120, Issue 10
Abstract
The vortex tube is a device for extracting sediment from canals. A companion paper presented methods for assessing the trapping efficiency of vortex tubes. This present paper provides a flow analysis that is based on flow continuity, a momentum balance along the tube axis, and an angular momentum balance as flow enters the tube. The predictions of the analysis are compared with laboratory and field data: the ratio of an observed discharge coefficient to its predicted value had a mean value of 0.97 and a standard deviation of 0.11 over 956 measurements. The analysis is then used to form design guidelines so that the following three criteria are satisfied: the difference in head between the canal and the vortex tube outlet is acceptable; the tube does not block with sediment; and water is near uniformly abstracted along the length of the tube. Finally, a procedure is given for the design of vortex tubes that uses as input the required trapping efficiency, the required head loss, and the canal characteristics.
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References
1.
Ahmed, M. (1958). “Final recommendation from experiments of slit ejector of DG Kahn canal.” Hydraulics Research. IAHR.
2.
Atkinson, E. (1990). “The vortex tube sediment extractor; a flow analysis and its design implications.” Rep. OD/TN 51, HR Wallingford, Oxfordshire, U.K.
3.
Atkinson, E. (1994). “Vortex‐tube sediment extractor. part I: trapping efficiency.” J. Hydr. Engrg., ASCE, 120(10), 1110–1125.
4.
“Design manual for canal sediment extractors.” (1993). HR Wallingford, Oxfordshire, U.K.
5.
Lawrence, P., and Sanmuganathan, K. (1981). “Field verification of vortex tube design method.” Proc., South East Asia Regional Symp. on Problems of Soil Erosion and Sediment, Asian Institute of Technology, Bangkok, Thailand.
6.
Mahmood, K. (1975). “Flow through vortex tube sediment ejectors.” Proc., Speciality Conf. on Irrig. and Drain. in an Age of Competition for Resour., ASCE, New York, N.Y.
7.
Miller, D. S. (1978). Internal flow systems. British Hydromechanics Research Association, Bedford, U.K.
8.
Robinson, A. R. (1962). “Vortex tube sand trap.” Trans., ASCE, Vol. 127, Part III, 391–433.
9.
Sanmuganathan, K. (1976). “Design of vortex tube silt extractors.” Rep. OD 6, HR Wallingford, Oxfordshire, U.K.
10.
Sanmuganathan, K., and Lawrence, P. (1980). “Design of vortex tube silt extractors.” Proc., Int. Conf. on Water Resour. Development, Asian Institute of Technology, Bangkok, Thailand.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 120 • Issue 10 • October 1994
Pages: 1126 - 1138
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Mar 8, 1993
Published online: Oct 1, 1994
Published in print: Oct 1994
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