Modeling Outfall Plume Behavior Using Far Field Circulation Model

The near field behavior of the new Boston sewage outfall plume, as simulated by a far field circulation model of Massachusetts Bay, has been compared with similar predictions from a well-known and often-used near field plume model (ULINE). The three-dimensional circulation model applied to Massachusetts Bay is based upon far field physical processes that may or may not apply to the near field plume physics. An accurate characterization of initial mixing is important for reliable prediction of the environmental impact of the new outfall's discharge. Two parameters predicted by both models, plume rise (or trap) height and dilution, have been compared to determine how well the circulation model represents near field behavior. The comparison indicates that the Massachusetts Bay far field model predicts trap heights and initial dilutions that are surprisingly similar to those generated by the near field model. The parameterization of the horizontal and vertical mixing processes in the far field circulation mod...

[1]  Alan F. Blumberg,et al.  Modeling transport processes in the coastal ocean , 1993 .

[2]  Philip J. W. Roberts,et al.  Hydraulic model study for Boston outfall. II: Environmental performance , 1993 .

[3]  B. Jones,et al.  Mixing, Dispersion, and Resuspension in Vicinity of Ocean Wastewater Plume , 1992 .

[4]  Alan F. Blumberg,et al.  Modeling of wind-induced destratification in Chesapeake Bay , 1990 .

[5]  W. R. Geyer,et al.  Physical oceanographic investigation of Massachusetts and Cape Cod bays: executive summary , 1992 .

[6]  D. J. Baumgartner,et al.  Ocean Outfalls. III: Effect of Diffuser Design on Submerged Wastefield , 1989 .

[7]  Akira Okubo,et al.  Oceanic diffusion diagrams , 1971 .

[8]  A. Rosati,et al.  A Quasi-equilibrium Turbulent Energy Model for Geophysical Flows , 1988 .

[9]  Philip J. W. Roberts,et al.  Line Plume and Ocean Outfall Dispersion , 1979 .

[10]  Gerhard H. Jirka,et al.  Hydrodynamic Classification of Submerged Multiport‐Diffuser Discharges , 1991 .

[11]  George L. Mellor,et al.  A Numerical Study of the Variability and the Separation of the Gulf Stream, Induced by Surface Atmospheric Forcing and Lateral Boundary Flows , 1992 .

[12]  Xue-Yong Zhang,et al.  Ocean outfall modeling--interfacing near and far field models with particle tracking method , 1995 .

[13]  D. J. Baumgartner,et al.  Ocean Outfalls. II: Spatial Evolution of Submerged Wastefield , 1989 .

[14]  B. Jones,et al.  Buoyant plume dispersion in a coastal environment: evolving plume structure and dynamics , 1994 .

[15]  D. J. Baumgartner,et al.  Ocean Outfalls. I: Submerged Wastefield Formation , 1989 .

[16]  R. Signell,et al.  Modeling the seasonal circulation in Massachusetts Bay , 1994 .

[17]  G. Mellor,et al.  A Hierarchy of Turbulence Closure Models for Planetary Boundary Layers. , 1974 .