Dimensioning of vortex storm overflows | Zendy

S. R. Mielczarek | Zendy; Jerzy M. Sawicki | Zendy

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Dimensioning of vortex storm overflows

Author(s) -

S. R. Mielczarek,

Jerzy M. Sawicki

Publication year - 2018

Publication title -

water science and technology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.406

H-Index - 137

eISSN - 1996-9732

pISSN - 0273-1223

DOI - 10.2166/wst.2018.291

Subject(s) - dimensioning , vortex , storm , sink (geography) , combined sewer , inlet , dissipation , mechanics , meteorology , engineering , physics , mechanical engineering , aerospace engineering , ecology , cartography , stormwater , geography , surface runoff , biology , thermodynamics

Vortex storm overflow is an interesting and useful technical solution, especially important in storm and combined sewage systems. However, there are no methods of this device dimensioning, which would be mathematically simple and properly precise physically. Such a method has been proposed in this paper, on the basis of investigations performed for the vortex separators and vortex flow controls. The essence of this method relies on the kinematic model of the velocity field and energy balance of the inflowing stream and dissipation. The procedure enables specialists to calculate the rise of the liquid free surface caused by the inlet stream energy and the hydraulic resistance of the bottom outlet. These mathematical relations are completed by two formulae: for the bottom 'morning glory' sink and for the upper overflow. The model has been positively verified during the laboratory measurements, so can be used during the technical dimensioning of the vortex storm overflows.

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