摘要
分析了复杂河网水沙数值模拟中水流连续方程、运动方程、泥沙连续方程和河床变形方程的相容性、稳定性和收敛性。结果表明,各方程按Pressmainn格式离散后差分方程满足Leanderts收敛条件,建立的模型理论推导和分析严密可靠,并以概化的算例验证了阻力项的存在有利于计算稳定的结论。
It analyzes the consistency,stability and convergence for continuity equation of water flow,motion equation,continuity equation of sediment and equation of river bed deformation in water sediment numerical simulation of complex river network.The results show that difference equations with discrete of Pressmainn format meet the conditions of Leanderts convergence,which indicates that the proposed model is reliable for theoretical derivation and analysis.And it also validates that resistance is in favor of co...
出处
《水电能源科学》
北大核心
2010年第6期80-82,85,共4页
Water Resources and Power
基金
国家自然科学基金资助重大项目(50099620)
关键词
河网
数值模拟
相容性
稳定性
收敛性
river network
numerical simulation
consistency
stability
convergence
