Injection of Drag Reducing Additives into Turbulent Water Flows
Abstract
The basic goals of this project were to determine the mechanism(s) by which drag-reducing, polymer solutions modify the turbulent momentum transport in wall bounded flows and to develop optimal methods for injecting these additives into those flows. The purpose was to learn how to control and to manipulate wall turbulence and thereby develop faster, more energy efficient, and quieter submersible vehicles. Injection of Drag Reducing Additives into Turbulent Water Flows: Results from Factorial Design; Two-Component Velocity Measurements and Mixing Length Model Predictions; Techniques for Concentration Measurements and Reynolds Number Scaling; Mixing Experiments and Newtonian Burst Frequency; and Concentration Results from Time-Resolved Measurements, Turbulence Structure and Mass Transport in a Channel Flow with Polymer Injection, Influence of Wall Strain Rate, Polymer Concentration and Channel Height Upon Drag Reduction and Turbulence Structure, Investigation into the Mechanism of Polymer Thread Drag Reduction, The Effect of Adverse Pressure Gradient on Turbulent Burst Structure in Low-Reynolds Number Equilibrium Boundary Layers, Polymer Drag Reduction of a Zero Pressure Gradient Boundary Layers,
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1991
- Accession Number
- ADA243209
Entities
People
- William G. Tiederman
Organizations
- Purdue University