Indications of Segmental Flow in Straight Pipes by Flow Injection with Spectrophotometric Detection

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A procedure of spectrophotometric analysis of fluid flow in pipes is described and its performance is tested on three different dye compounds. The procedure follows measurement and mathematical de-convolution of the signal with an exponential function that is associated with molecular diffusion. Evidence is provided for the presence of segmental flow and the three dye compounds, used as tracer molecules, indicate that the solute molecules gain velocity, predominantly in the streamwise direction, from the solvent flow rate. The additional velocity, as gained from the solvent flow rate, depends on a kinetic-diffusion constant and the internal friction of the system. The model allows a calculation of the flow-injection signal and serves as a tool for the investigation of properties of fluid dynamics.

Original languageEnglish
Pages (from-to)331-340
Number of pages10
JournalPhysica Scripta
Volume62
Issue number4
DOIs
Publication statusPublished - Jan 1 2000

Fingerprint

Dyes
Flow Rate
Straight
Injection
indication
flow velocity
dyes
Molecules
injection
molecular diffusion
internal friction
exponential functions
Deconvolution
fluid dynamics
Fluid Dynamics
convolution integrals
fluid flow
tracers
Fluid Flow
molecules

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

Cite this

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abstract = "A procedure of spectrophotometric analysis of fluid flow in pipes is described and its performance is tested on three different dye compounds. The procedure follows measurement and mathematical de-convolution of the signal with an exponential function that is associated with molecular diffusion. Evidence is provided for the presence of segmental flow and the three dye compounds, used as tracer molecules, indicate that the solute molecules gain velocity, predominantly in the streamwise direction, from the solvent flow rate. The additional velocity, as gained from the solvent flow rate, depends on a kinetic-diffusion constant and the internal friction of the system. The model allows a calculation of the flow-injection signal and serves as a tool for the investigation of properties of fluid dynamics.",
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Indications of Segmental Flow in Straight Pipes by Flow Injection with Spectrophotometric Detection. / Andersen, Jens E.T.

In: Physica Scripta, Vol. 62, No. 4, 01.01.2000, p. 331-340.

Research output: Contribution to journalArticle

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