Longitudinal dispersion coefficients within turbulent and transitional pipe flow

James Hart, Ian Guymer, Amy Jones, Virginia Stovin

Research output: Chapter in Book/Report/Conference proceedingChapter

15 Citations (Scopus)

Abstract

The longitudinal dispersion coefficient is used to describe the change in characteristics of a solute cloud, as it travels along the longitudinal axis of a pipe. Taylor (1954) proposed a now classical expression to predict the longitudinal dispersion coefficient within turbulent pipe flow. However, experimental work has shown significant deviation from his prediction for Re < 20,000. This paper presents experimental results from tracer studies conducted within the range 2,000 < Re < 50,000, from which longitudinal dispersion coefficients have been determined. Initial results are also presented for a numerical model that aims to predict the longitudinal dispersion coefficient over the same range of Reynolds numbers.
Original languageEnglish
Title of host publicationExperimental and computational solutions of hydraulic problems
PublisherSpringer
Pages133-145
Number of pages13
ISBN (Electronic)978-3-642-30209-1
ISBN (Print)978-3-642-30208-4
DOIs
Publication statusPublished - 2013

Keywords

  • Velocity Profile
  • Buffer Zone
  • Longitudinal Dispersion
  • Transitional Flow
  • Turbulent Pipe Flow

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    Hart, J., Guymer, I., Jones, A., & Stovin, V. (2013). Longitudinal dispersion coefficients within turbulent and transitional pipe flow. In Experimental and computational solutions of hydraulic problems (pp. 133-145). Springer. https://doi.org/10.1007/978-3-642-30209-1_8