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

Sonography of fetal midgut herniation: normal size criteria and correlation with crown‐rump length

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135339/1/jum1993125251.pd

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

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

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