A Method for Predicting Additive Drag Reduction from Small-Diameter Pipe Flows.
Abstract
The method of two loci for scaling-up the drag reduction by additives from measurements in not-too-small diameter pipes is extended to small diameter pipes. This is accomplished by including the effects of the viscous sublayer and buffer layer in formulating a prediction chart. A mixing-length model proved more accurate than three other models of the viscous sublayer and buffer layer in a comparison of predictions with measured data. The prediction chart may also be used to obtain a similarity-law drag-reduction characterization.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1985
- Accession Number
- ADA154411
Entities
People
- David W Taylor
- P. S. Granville