A 3-D Numerical Model for the Calculation of Water Wave Transformation in Large Area     

孙大鹏  李玉成  葛岚 《中国海洋工程》2001,(3):445-452

Based on the integral equation transformed from three dimensional Laplace equation and by the adoption of the division manner of sub- region boundary element method, the numerical computations of the velocity potential of each sub-region are given considering the continuity conditions of potential and normal derivatives at the interface of sub-regions. Therefore, computation of wave deformation in offshore flow field is realized. The present numerical model provides a good solution for the application of boundary element method to the calculation of wave deformation in large areas.  相似文献   

浅谈WGS84与北京54坐标系之间的转换     

葛岚 《浙江测绘》2008,(2):26-27

GPS测量得到的是WGS84坐标系下的坐标,而实际应用中较多使用的是北京54坐标,如何实现WGS84坐标系与北京54坐标系的转换,一直是GPS应用中的热点。本文详细介绍了GPS定位结果转换至北京54平面坐标系的两种坐标转换模型,并对实验结果进行了分析比较。  相似文献