2,258 research outputs found
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Identifying and explaining inter-peak cycling behaviours within the London Cycle Hire Scheme Conference
Sonography of fetal midgut herniation: normal size criteria and correlation with crownârump length
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135339/1/jum1993125251.pd
Tangential sulcal echoes. Potential pitfall in the diagnosis of parenchymal lesions on cranial sonography.
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135242/1/jum1987612685.pd
Effect of the Volute on Performance of a Centrifugal-Pump Impeller
An experimental study of volute influence on radial
flow-impeller performance was conducted by operating a
single impeller with three different sets of volute vanes.
In each case, over-all performance was measured and an
internal-flow study within the volute was made. The results
show that at their respective design flow rates the influence
of the volutes is least and the deviation of performance
from the free-impeller operation is small. At
off-design flow rates there are major changes in the impeller
performance resulting from the presence of the
volutes. Large real fluid effects, coupled with a nonuniform
velocity pattern at the impeller exit, result in a flow
through the volute that does not resemble a potential flow.
Even so, the fluid losses through the volute are comparatively small
An Experimental Study of Centrifugal Pump Impellers
This report summarizes about three years of experimental work on centrifugal pump impellers by the hydraulic machinery group of the Hydrodynamics
Laboratory. Some of the work discussed herein has already been reported as individual investigations by this project. This report embodies these earlier results together with more complete and recent
investigations of centrifugal pump impellers
Behavior Of Plants In Unventilated Chambers
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142325/1/ajb205503.pd
An Experimental Study of Centrifugal-Pump Impellers
Experimental investigations were made on four two-dimensional impellers and on a well-designed commercial three-dimensional Francis impeller. The over-all performance of each of these impellers was measured and internal-energy loss and pressure-distribution data were also obtained for several impellers. The exit angle of the two-dimensional impellers was fixed and the inlet angle was systematically varied. However, the hydraulic characteristics of these impellers were all found to differ, the source of the variation being in the various loss distributions and hence internal flow patterns in the impellers. The two-dimensional and three-dimensional impeller-loss distributions were also different. The Francis-impeller performance agreed better with potential theory than that of the two-dimensional impellers, and it is included that the different loss distributions of the two types are responsible
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