Hydrodynamic design of deep ocean water discharge for the creation of a nutrient-rich plume in the South China Sea
Hydrodynamic design of deep ocean water discharge for the creation of a nutrient-rich plume in the South China Sea
复制标题
为在南海创造营养丰富的羽流而进行的深海排水水动力设计
DOI：
10.1016/j.oceaneng.2015.08.006
复制
发表时间：
2015-11-01
影响因子：
5
通讯作者：
Chen, Ying
中科院分区：
文献类型：
--
作者：
Fan, Wei;Pan, Yiwen;Chen, Ying
公海海水养殖可以通过深海水（DOW）的人工上升来建立。然而，主要障碍之一是难以在不显着稀释的情况下容纳营养丰富的 DOW 羽流。本文介绍了在南海 (SCS) 中产生 DOW 羽流的 DOW 排放的水动力设计。研究了存在尖锐密度界面的分层海洋环境中羽流的轨迹和 DOW 浓度与当前速度、抽水流量、管道直径和 DOW 排放最佳深度的关系。提出了一个数学模型，以确保在特定的海洋分层和当前条件下可以维持 DOW 羽流中所需的营养物浓度。通过对 DOW 羽流的流动和养分传输进行计算流体动力学 (CFD) 分析，验证了数学模型的有效性。结果表明，通过设置流量、管径和相应的最佳DOW排放深度可以控制羽流中DOW的体积浓度。通过这种方式，营养丰富的 DOW 羽流可以在公海中持续存在，从而刺激海洋初级生产力。 (C) 2015 Elsevier Ltd. 保留所有权利。
Open ocean mariculture can be established by the artificial upwelling of deep ocean water (DOW). However, one of the major obstacles is the difficulty of containing a nutrient-rich DOW plume without significant dilution. In this paper, the hydrodynamic design of DOW discharge for the creation of the DOW plume in the South China Sea (SCS) is presented. The trajectory and DOW concentration of the plume in a stratified ocean environment where a sharp density interface exists is investigated relative to the current speed, pumped water flow rate, pipe diameter and optimal depth of DOW discharge. A mathematical model is presented to ensure that a desirable nutrient concentration in the DOW plume can be maintained under specific ocean stratification and current conditions. The validity of the mathematical model is verified by a computational fluid dynamics (CFD) analysis on the flow and nutrient transport of the DOW plume. The results show that the volume concentration of DOW in the plume can be controlled by setting up the flow rate, pipe diameter and corresponding optimal DOW discharge depth. In this way, the nutrient-rich DOW plume can be sustained in the open ocean to stimulate marine primary productivity. (C) 2015 Elsevier Ltd. All rights reserved.