CONCLUSIONS AND RECOMMENDATIONS 



A turbulent transport model suitable for hydraulic applications 

 has been presented. The model gives accurate prediction of the 

 oscillatory turbulent boundary layer measured by Jonsson and Carlsen 

 without having to change any of the model constants. The basic model 

 is being utilized to study the current-wave interaction within the 

 benthic boundary layer (16). A canopy model suitable for atmospneric 

 as well as hydraulic applications is presented, although the effects of 

 additional parameters such as leaf stiffness need to be addressed. By 

 combining the canopy model with a mesoscale ocean circulation model, 

 one can accurately estimate the coastal currents in salt marshes. The 

 basic canopy model may also be carried over for studying the flow and 

 sediment transport in the vicinity of bed forms. Adaption of a 

 condensend version of the complete turbulent transport model into a 

 three-dimensional, time-dependent numerical model of coastal currents 

 is also discussed. The proposed task should lead to significant 

 improvements in the predictability of coastal circulation models. 



ACKNOWLEDGEMENTS 



This research has been partially funded by tne .Waterways 

 Experiment Station under contract DAC.J39-80-C-0087. rfork on the canopy 

 model was funded by Electric Power Research Institute under contract 

 RP-I3O6-I. 



APPENDIX I, - REFERENCES 



1. Donaldson, C. duP., "Atmospheric Turbulence and the Dispersal of 

 Atmospheric Pollutants," in Proceedings of Workshop on Meteorology, 

 American Meteorological Society, ed. by D. A. Haugen, Science 

 Press, ]973, pp. 313-390. 



2. Grant, W. D. and Madsen, 0. S. , "Bottom Friction Under Waves in 

 the Presence of a Weak Current," HOAA Tech, Rep. ERL-t^SA, 1978, 

 150 pp. 



3. Horikawa, K. and Watanabe. A., "Laboratory Study on Oscillatory 

 Boundary Layer Flow," Proc. 11th Con^. Coastal Enang . , Vol. 1, 

 1969, pp. A67-486. 



4. Jackson, G. A., "Effects of a Kelp Bed on Coastal Currents," 

 EOS, Trans. Amer. Geophys. Union, Vol. 63, No. 3, 1982, p. 84. 



5. Jonsson, I. G. , "Measurements in the Turbulent Wave Boundary 

 Layer," Proc. 10th Congr. Int. Ass. Hydr. Res., Vol. 1, 1963, 

 pp. 85-92. 



6. Jonsson, I. G. , "A New Approach to Oscillatory Rough Turbulent 

 Boundary Layers," Ocean Engng., Vol. 7, 1980, pp. 109-152. 



7. Jonsson, I. G. and Carlsen, N. A., "Experimental and Theoretical 

 Investigations in an Oscillatory Rough Turbulent Boundary 

 Layer," J. Hydr. Res., Vol. lA, 1976, pp. A5-60. 



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