Projection methods are being more widely applied in numerically simulations of incompressible flows, however, their temporal accuracies are no better than second order.

• 在数值模拟不可压缩流动中,投影方法得到了越来越广泛的应用,一般认为,目前的投影方法在时间方向上仅仅停留在二阶精度。