Eight-Phase Integration of Powers of Bed Shear Velocity for Entrainment and Bed Load Vector

Kim, H.; Min, B.; Lee, S.; Park, D., and Yoo, J., 2018. Eight-phase integration of powers of bed shear velocity for entrainment and bed load vector. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of...

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Bibliographic Details
Published inJournal of coastal research Vol. 85; no. sp1; pp. 1151 - 1155
Main Authors Kim, Hyoseob, Min, Byoungwook, Lee, Seungho, Park, Duhoon, Yoo, Jeseon
Format Journal Article
LanguageEnglish
Published Fort Lauderdale Coastal Education and Research Foundation 01.05.2018
COASTAL EDUCATION & RESEARCH FOUNDATION, INC. [CERF]
Allen Press Inc
Subjects
8 phases
average
Bed load
Bottom stress
COASTAL ENGINEERING
Coasts
Components
current
Engineering
Entrainment
Integration
Load distribution
Numerical integration
Parameterization
Properties
Sediment transport
Shear stress
shear velocity
Trigonometric functions
vector sum
Velocity
wave
wave average
Wave period
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Summary:Kim, H.; Min, B.; Lee, S.; Park, D., and Yoo, J., 2018. Eight-phase integration of powers of bed shear velocity for entrainment and bed load vector. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 1151–1155. Coconut Creek (Florida), ISSN 0749-0208. Assume that the entrainment rate is a function of the bed shear velocity to a power with a scale factor, and the two components of the bed load are the cosine and sine of the power for the entrainment with another scale factor. The power n may be between 2 to 6 depending on their authors. There have been parameterization trials, to obtain wave-phase-average bed shear stress from current only and wave-related properties. They involve stirring factors, which requires other complicated manipulations. Here a guideline for numerical integration is proposed instead of parameterization. Bed shear velocity vector is assumed to be composed of constant current and sinusoidal wave components. 8 phases in a wave period is sufficient for accurate answers of the three properties for the power between 2 and 6, the errors of which are less than 5.1%.
ISSN:0749-0208
1551-5036
DOI:10.2112/SI85-231.1