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An assessment of some parameters affecting an environmental model of a natural harbour

机译:对影响天然港口环境模型的一些参数的评估

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The use of computer-based numerical models to predict water circulation aptterns and solute or contaminant dispersion in a water body is well-established in the field of coastal environmental engineering. Too often, however, such models are used without proper understanding of the parameters used in the mathematical formulation of the governing equations and the effects that varying these parameters within given ranges can have on the model results. In this paper the authors present the results of a range of parameter sensitivity tests carried out on one such numerical model, DIVAST. The sensitivity of the hydrodynamic sub-model to parameters affecting bed shear stress, eddy formation and advective acceleration is assessed and several mass conservation tests are carried out on the solute transport sub-model. The application of the model to a natural harbour on the west coast of Ireland is outlined and the results of the above tests on this model application are discussed.
机译:在沿海环境工程领域,已经建立了基于计算机的数值模型来预测水循环模式以及溶质或污染物在水体中的扩散的方法。但是,在使用此类模型时,往往没有正确理解控制方程的数学公式中使用的参数以及在给定范围内更改这些参数可能对模型结果产生的影响。在本文中,作者介绍了在一个这样的数字模型DIVAST上进行的一系列参数敏感性测试的结果。评估了流体动力学子模型对影响床层切应力,涡流形成和对流加速度的参数的敏感性,并对溶质运移子模型进行了一些质量守恒试验。概述了该模型在爱尔兰西海岸天然港口的应用,并讨论了在该模型应用上进行的上述测试的结果。

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