Accession Number:

ADP013632

Title:

Coupling DNS with Polymer Models for Flow Control

Descriptive Note:

Conference paper

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s):

• Joslin, Ronald D.

Report Date:

2001-08-01

Pagination or Media Count:

14.0

Abstract:

This paper discusses the coupling of polymer models with direct numerical simulation DNS toward understanding, modeling, and controlling turbulent boundary layer flows for drag reduction. Experiments have demonstrated that a dilute polymer solution injected into a turbulent flow can result in up to 80 drag reduction. Pipe, channel, and flat plate experiments are summarized to highlight similarities and differences in the flows associated with the polymer-induced drag reduction process. Constitutive and kinetic approaches to polymer modeling are then discussed with their respective couplings to DNS.

Descriptors:

• *SECONDARY INJECTION
• *DRAG REDUCTION
• MATHEMATICAL MODELS
• COUPLING(INTERACTION)
• SYMPOSIA
• POLYMERS
• NUMERICAL ANALYSIS
• TURBULENT BOUNDARY LAYER
• KINETICS
• CHANNEL FLOW
• BOUNDARY LAYER FLOW
• FLAT PLATE MODELS
• PIPE FLOW

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE