Hydraulic Design Aspects of the Boston Outfall

by Dominique N. Brocard, Metcalf & Eddy Inc, United States,
Norman H. Brooks, Metcalf & Eddy Inc, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract: The diffuser outfall under design for Boston must have the ability to be purged of seawater upon commissioning or following an accidental flow stoppage. The criteria governing the flushing of seawater from the outfall conduit and the purging of the diffuser risers are derived, and the hydraulic design implications are discussed. For the deep bedrock tunnel design which is proposed, the riser purging criterion requires a high head loss in the discharge ports, and alternative purging schemes are discussed.

Subject Headings: Hydraulic design | Sea water | Diffusion | Head loss (fluid mechanics) | Flushing | Bedrock | Conduits | North America | Massachusetts | United States | Boston

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