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Dimensioning of vortex storm overflows.

Szymon Mielczarek1, Jerzy M Sawicki1

  • 1Faculty of Civil and Environmental Engineering, Department of Hydroengineering, Gdansk Technical University, Ul. G.Narutowicza 11/12, 80-233 Gdansk, Pomorskie, Poland

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|August 14, 2018
PubMed
Summary
This summary is machine-generated.

This study presents a new, precise method for dimensioning vortex storm overflows, crucial for sewage systems. The validated technique simplifies calculations for designing these essential hydraulic structures.

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Area of Science:

  • Environmental Engineering
  • Hydraulic Engineering
  • Fluid Mechanics

Background:

  • Vortex storm overflows are vital components in managing combined and storm sewage systems.
  • Existing methods for dimensioning vortex storm overflows lack mathematical simplicity and physical precision.

Purpose of the Study:

  • To propose a novel, mathematically simple, and physically precise method for dimensioning vortex storm overflows.
  • To provide engineers with a reliable tool for calculating key parameters in vortex overflow design.

Main Methods:

  • Development of a kinematic model for the velocity field within vortex separators.
  • Application of energy balance principles to analyze inflowing streams and energy dissipation.
  • Derivation of formulae for calculating liquid free surface rise and hydraulic resistance.

Main Results:

  • A new procedure for calculating the rise of the liquid free surface based on inlet stream energy and outlet resistance.
  • Specific formulae developed for both the 'morning glory' sink and upper overflow components.
  • Positive verification of the proposed model through laboratory measurements.

Conclusions:

  • The developed method offers a significant improvement over existing techniques for vortex storm overflow dimensioning.
  • The validated model is suitable for practical technical dimensioning by specialists in hydraulic and sewage systems.