Coastal Sciences Division, Pacific Northwest National Laboratory, Seattle, WA 98109, United States of America.
Coastal Sciences Division, Pacific Northwest National Laboratory, Seattle, WA 98109, United States of America.
Mar Pollut Bull. 2019 Dec;149:110554. doi: 10.1016/j.marpolbul.2019.110554. Epub 2019 Sep 26.
Although numerous steady-state effluent plume dilution models are in use, their application in tidal environments remains a challenge. Three-dimensional dynamic circulation models are also inadequate, often due to the lack of required resolution and simplifying assumptions. To overcome these limitations, we present FVCOM-plume-an outfall plume dilution and transport model that operates within the Finite Volume Coastal Ocean Model (FVCOM) framework. It provides simultaneous inclusion of near-field dilution and far-field plume transport processes. The near-field is based on UM3 model using Lagrangian Control Volume approach to compute buoyant plume trajectory and dilution from multiport diffusers. The far-field uses neutrally buoyant particles with point masses and the random walk method to solve unsteady advection-diffusion processes. A density kernel approach is used to compute concentrations at point locations and analyze far-field plume characteristics. The results demonstrate the ability of FVCOM-plume to simultaneously capture near-field and far-field effluent plume dynamics in tidal environments.
尽管有许多稳态排放羽流稀释模型在使用，但它们在潮汐环境中的应用仍然是一个挑战。三维动力循环模型也不够完善，这往往是由于缺乏所需的分辨率和简化假设。为了克服这些限制，我们提出了 FVCOM-plume，这是一种在有限体积沿海海洋模型（FVCOM）框架内运行的排放羽流稀释和传输模型。它可以同时包含近场稀释和远场羽流输运过程。近场基于使用拉格朗日控制体积方法的 UM3 模型，用于计算多端口扩散器的浮力气流轨迹和稀释。远场使用具有点质量的中性浮力粒子和随机游动方法来求解非稳态对流-扩散过程。密度核方法用于计算点位置的浓度，并分析远场羽流特征。结果表明，FVCOM-plume 能够在潮汐环境中同时捕捉近场和远场排放羽流动力学。
