Published March 15, 2012 | Version v1
Journal article

Pipe Flow and Wall Turbulence Using a Modified Navier-Stokes Equation

  • 1. Department of Informatics and Geoinformatics, Fakulta Zivotniho Prostredi, FZP, University of J.E. Purkyne, Kralova Vysina 7, 40096 Usti n.L. (Czech Republic)
  • 2. Department of Electrical Engineering, Columbia University, New York City (United States)

Description

We use a derived incompressible modified Navier-Stokes equation to model pipe flow and wall turbulence. We reproduce the observed flattened paraboloid velocity profiles of turbulence that cannot be obtained directly using standard incompressible Navier-Stokes equation. The solutions found are in harmony with multi-valued velocity fields as a definition of turbulence. Repeating the procedure for the flow of turbulent fluid between two parallel flat plates we find similar flattened velocity profiles. We extend the analysis to the turbulent flow along a single wall and compare the results with experimental data and the established controversial von Karman logarithmic law of the wall. (electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics)

Availability note (English)

Available from http://dx.doi.org/10.1088/0253-6102/57/3/22

Additional details

Identifiers

Publishing Information

Journal Title
Communications in Theoretical Physics
Journal Volume
57
Journal Issue
3
Journal Page Range
p. 477-481
ISSN
0253-6102

INIS

Country of Publication
China
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
44004013
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
COMPARATIVE EVALUATIONS; ELECTROMAGNETISM; MATHEMATICAL SOLUTIONS; NAVIER-STOKES EQUATIONS; SIMULATION; TURBULENCE
Descriptors DEC
DIFFERENTIAL EQUATIONS; EQUATIONS; EVALUATION; MAGNETISM; PARTIAL DIFFERENTIAL EQUATIONS