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CORMIX2: Unidirectional Multiport Diffuser Discharges

In the unidirectional diffuser, all ports (or nozzles) point to one side of the diffuser line and are oriented more or less normally to the diffuser line and more or less horizontally.

A unidirectional multiport diffuser hence imparts a net horizontal momentum flux to the effluent discharge in a direction that is perpendicular to the diffuser main line.

Definition sketches and CorSpy visualizations show these types of duffusers with fanning and without fanning.

The special case where all ports point directly to the water surface should be modeled within CORMIX2 as an alternating diffuser design as it imparts no net horizontal momentum flux to the effluent flow.

Please click on the slide images below to view CorSpy visualizations of various unidirectional multiport diffuser configrations.

  • CORMIX2 Definition Diagram of Unidirectional Diffuser
    Definition diagram for unidirectional diffuser specification within CORMIX2 (larger image).
  • Individual plumes merging from unidirectional multiport diffuser.
    Individual plumes merge in a unidirectional multiport diffuser discharge experiment (Photo: G. Jirka).
  • CorSpy 3D-View - Unidirectional Diffuser (Un-Fanned)
    CorSpy 3-D view of a unidirectional diffuser without fanning (larger image)
  • CorSpy Side-View - Unidirectional Diffuser (Un-Fanned)
    CorSpy side view of a unidirectional diffuser without fanning (larger image).
  • CorSpy Side-View - Unidirectional Diffuser (Un-Fanned)
    CorSpy plan view of a unidirectional diffuser without fanning (larger image).
  • CorSpy 3D-View - Unidirectional Diffuser (Fanned)
    CorSpy 3D view of a unidirectional diffuser with fanning (larger image).
  • CorSpy Side-View - Unidirectional Diffuser (Fanned)
    CorSpy side view of a unidirectional diffuser with fanning (larger image).
  • CorSpy Plan-View - Unidirectional Diffuser (Fanned)
    CorSpy plan view of a unidirectional diffuser with fanning (larger image).