In this paper we propose a numerical Riemann problem solver at the junction of one dimensional shallow-water canal networks. The junction conditions take into account the angles with which the channels intersect and include the possibility of canals with different sections. The solver is illustrated with several numerical tests which underline the importance of the angle dependence to obtain reliable solutions.

翻译：在本文中,我们提议在一维的浅水运河网络交汇处设置一个名为Riemann的数值问题解答器。连接条件考虑到通道交叉的角度,并包括不同区段的运河的可能性。解答器通过若干数字测试加以说明,这些测试强调角依赖对于获得可靠解决方案的重要性。