Analysis of Ballast Water Sampling Port Designs Using Computational Fluid Dynamics

Abstract

Analytical methods and computational fluid dynamics are used to describe flow conditions encountered at Naval Research Laboratory's Ballast Water Treatment Test Facility. Design tradeoffs are examined in the engineering of sample ports for collecting biological organisms in water samples, and criteria are provided for sample port installation in shipboard piping systems. Results of this work show that the ideal geometry for biological sampling is from the centerline of a straight, vertical, upward-flowing pipe having a sample port diameter between 1.5 and 2.0 times the basic isokinetic diameter as defined in this report. Sample ports should use ball valves for isolation purposes, and diaphragm or venturi valves for flow control; they should be located as close to the overboard outlet as possible; and they should be positioned as far from upstream obstructions and fittings as possible.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2008
Accession Number
ADA479103

Entities

People

  • E. J. Lemieux
  • J. F. Grant
  • R. V. Richard

Organizations

  • United States Coast Guard Research & Development Center

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Barometric Pressure
  • Boundary Layer
  • Coast Guard
  • Computational Fluid Dynamics
  • Engineering
  • Environmental Protection
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Hydrodynamics
  • Hypervelocity Flow
  • Mechanics
  • Military Research
  • Pipe Flow
  • Reynolds Number
  • Test Facilities
  • Turbulent Flow

Readers

  • Combustion and Flow Dynamics.
  • Environmental Engineering
  • Systems Analysis and Design