Accession Number:

ADA011829

Title:

Steady and Unsteady Flow in Straight Rectangular Ducts.

Descriptive Note:

Technical memo.,

Corporate Author:

JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB

Personal Author(s):

• O'Brien,V.

Report Date:

1975-04-01

Pagination or Media Count:

37.0

Abstract:

A new solution for steady parallel flow in a rectangular duct is given that is valid for any aspect ratio ab where a and b are orthogonal half-widths of the duct, in contrast to older formulas that are restricted to certain ranges of ab. New solutions for oscillatory flow in rectangular ducts are also given that replace a set of invalid published solutions. They provide calibration constants for relating local and average values of the unsteady velocity flow measurements in any rectangular channel.

Descriptors:

• *DUCTS
• *FLUID FLOW
• RECTANGULAR BODIES
• LAMINAR FLOW
• INCOMPRESSIBLE FLOW
• ASPECT RATIO

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE