利用数值模型设计按比例移动床实验

4区 地球科学 Q3 Earth and Planetary Sciences
J. Alsina, A. Sánchez-Arcilla, X. Gironella, T. Baldock
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引用次数: 6

摘要

利用一套数值模型对移动床短波实验的缩放设计进行了分析,以测试不同的沉积物缩放配置。数值模拟结果表明,几何沉积物缩放使边界层流动具有相似性,但沉积物输运模式从原型中的床载荷转换为模型中的悬浮载荷。这是因为原型与模型的沉积物大小关系很大。然而,通过缩放来保持相对下落速度,可使沉积物尺寸关系更小,主要输运过程更接近。提出了一套修正方法,以尽量减少沉积物运移速率和底部演变的比例效应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design of scaled movable bed experiments using numerical models
Scaling designs for mobile bed short wave experiments have been analysed using a suite of numerical models to test different sediment scaling configurations. The numerical simulations have revealed that geometrical sediment scaling gives similarity in the boundary layer flow but the sediment transport mode switches from bedload in the prototype to suspended-load in the model. This is due to the high relation of prototype to model sediment sizes. However, scaling to maintain the relative fall speed allows smaller sediment size relations and closer similarity in the dominant transport processes. A set of corrections have been proposed to minimise the scaling effects in sediment transport rates and bottom evolution.
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来源期刊
Journal of Coastal Research
Journal of Coastal Research 地学-地球科学综合
自引率
0.00%
发文量
87
审稿时长
3-8 weeks
期刊介绍: The Journal of Coastal Research (JCR) is one of the leading international journals for coastal studies and processes, and is published bi-monthly by the Coastal Education & Research Foundation [CERF]. By covering the entire field of coastal research, the JCR encompasses all subjects relevant to natural and engineered environments (freshwater, brackish, or marine) and the protection/management of their resources in the vicinity of coastlines of the world. Even though the journal broadly focuses on immediate shoreline zones, the JCR also embraces those coastal environments that either reach some indefinite distance inland or that extend seaward beyond the outer margins of the sublittoral (neritic) zone. The JCR disseminates accurate information to both the public and research specialists around the world on all aspects of coastal issues in an effort to maintain or improve the quality of our planet''s shoreline resources.
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