Gas Transfer at Hydraulic Structures

Task Committee on Gas Transfer at Hydraulic Structures, Technical Committee on Hydraulic Structures, ASCE

Document Type: Proceeding Paper

Part of: Air-Water Mass Transfer


The objective of this paper is to identify and briefly summarize the state-of-the-art in measuring and describing gas transfer at hydraulic structures. Basic theory of mass transfer at the air-water interface is presented. The physical processes at hydraulic structures, such as air entrainment and turbulent mixing, open channel flow, closed-conduit (two-phase) flow, and effects of sub- and super-atmospheric pressures, that significantly impact gas transfer are identified. The fluid mechanics of flow at a variety of hydraulic structures are reviewed with their impact on gas transfer noted. Existing data and current measurement, evaluation, and predictive techniques are identified.

Subject Headings: Hydraulic structures | Gas flow | Air flow | Pressurized flow | Stratified flow | Turbulent flow | Fluid flow | Open channel flow

Services: Buy this book/Buy this article


Return to search