Terrain Pre-process the Lower Reaches Yellow River and Delta Estuary Coast of Two Dimensional Numerical Model

Abstract

Mike21 is a professional engineering software package for simulating the flow, wave, sediment and environmental problems of rivers, lakes, estuaries, bays, coasts and oceans. The pre-processing of the terrain in the study area is an important foundation for constructing the Mike21 model. In order to improve the calculation accuracy of the Mike21 model, taking the lower Yellow River estuary channel and the Bohai Bay area as an example, the use of Google Earth satellite images and the AutoCAD topographic map to extract the terrain boundary is discussed, and the terrain interpolation problem in terrain pre-processing is discussed. The two terrain pre-processing methods can effectively improve the terrain pre-processing efficiency and make the terrain processing result file more realistic.