MASS2, Modular Aquatic Simulation System in Two Dimensions, Theory and Numerical Methods

Perkins, William A. ; Richmond, Marshall C.

关键词: 97;    M CODES;    TWO-DIMENSIONAL CALCULATIONS;    HYDRODYNAMICS;    COMPUTERIZED SIMULATION;    ENVIRONMENTAL TRANSPORT;    TURBULENT FLOW;    WATER QUALITY;    RIVERS;    ESTUARIES hydrodynamic model;    depth-averaged;    river;    esturary;    finite volume;    con;   

DOI  :  10.2172/919712
RP-ID  :  PNNL-14820-1
PID  :  OSTI ID: 919712
Others  :  Other: 830403000
Others  :  TRN: US200825%%278

学科分类：环境科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

The Modular Aquatic Simulation System in Two Dimensions (MASS2) is a two-dimensional, depth-averaged hydrodynamics and transport model. The model simulates time varying distributions of depth-averaged velocities, water surface elevations, and water quality constituents. MASS2 uses a structured, multi-block, boundary-fitted, curvilinear computational mesh, which allows the simulation of very complex riverine or estuarine networks. The blocks may be of varying resolution, which allows high resolution to be used only where needed. MASS2 can simulate a wide variety of hydrodynamic conditions, including supercritical flow and hydraulic jumps. It can also simulate a wide variety of water quality conditions, including sediment, conservative or decaying contaminants, sediment-sorbed contaminants, water temperature, and total dissolved gas. Any number of these constituents may be simulated simultaneously. In addition, transport simulations may be performed using pre-calculated hydrodynamic conditions, allowing long-term transport simulations unencumbered by the more intensive hydrodynamic calculations, or repeated transport simulations without re-simulating hydrodynamics. This report documents the theory and numerical methods used in MASS2. In addition, the results are presented from several of hydrodynamic and transport validation tests to which MASS2 was subjected. The companion user manual documents the application of MASS2.