文章基本信息

标题：Calculation of Spatial Variation of Bottom Friction Coefficient in the Persian Gulf
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作者：Rashidi Ebrahim Hesari, Akbar ; Salami Abyaneh, Rezvan
期刊名称：Uqyānūs/shināsī
印刷版ISSN：1562-1057
电子版ISSN：2476-6755
出版年度：2020
卷号：11
期号：41
页码：63-72
DOI：10.29252/JOC.2019.10.12362
出版社：Regional Information Center for Science and Technology (RICeST)
摘要：In this research, a modified version of three dimensional hydrostatic finite element QUODDY-4 was used to calculate the spatial variation of bottom friction coefficient in the Persian Gulf. It differs from original one in using an external module for calculation of bottom friction coefficient which was added to the model. Spatial variation of bottom friction coefficient is calculated using a hydrodynamic approach in which relation between wave friction factor and other characteristics of bottom boundary layer is described with non-dimensional parameters like surface Rossby number, Reynolds number for flow and relative inertial frequencies. Results show that friction coefficient varies from 0.0005 to 0.006 in the Persian Gulf and in most places, spatially in regions with depth more than 50 meters, its value is less than default value of this coefficient in the numerical models. Consequently, usage of the constant value for friction coefficient in shallow oceanic basins and marginal seas like the Persian Gulf needs attention and special cares.
关键词：Persian Gulf ; bottom friction coefficient ; QUODDY-4 Model