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

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Title
Eight-Phase Integration of Powers of Bed Shear Velocity for Entrainment and Bed Load Vector
Author(s)
Kim, Hyoseob; Min, Byoungwook; Lee, Seungho; Park, Duhoon; Yoo, Jeseon
KIOST Author(s)
Yoo, Je Seon(유제선)
Publication Year
2018-05
Abstract
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
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/959
DOI
10.2112/SI85-231.1
Bibliographic Citation
JOURNAL OF COASTAL RESEARCH, pp.1151 - 1155, 2018
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Subject
WAVES; FLOWS
Keywords
wave; current; average; 8 phases; vector sum; shear velocity; wave average
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Related Researcher
Research Interests

Coastal disaster observation and prediction,Coastal numerical modeling,Coastal remote sensing,연안침식 등 연안재해 관측 및 예측,연안 파랑 및 해수유동 수치모델링,연안 원격탐사

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