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本文给出二维的理想非压缩流体欧拉方程边值问题的一种新的数值计算方法.文中主要考虑具备流入和流出的流体通过一个有界肘型区域的情形.通过坐标变换,将原欧拉方程变换为一种新的适合于肘型区域的求解形式,再用有限差分法,得到问题的近似求解格式.最后文中将此方法应用到不同肘型形状的区域上,进行数值模拟,说明了算法有效性.“,”A numerical algorithm to study the boundary value problem in which the governing equations are the steady Euler equations and the vorticity is given on the inflow parts of the domain boundary is developed. The Euler equations are implemented in terms of the stream function and vorticity. The convergence of the finite-difference equations to the exact solution is shown experimentally for the test problem by comparing the computational results with the exact solution on the sequence of grids. The numerical algorithm is illustrated with several examples of steady flow through a 2-D channel with two inflow and outflow parts of boundary. The analysis of calculations shows strong dependence of the flow structure on the vorticity given at the inflow parts of the boundary.