采用直接数值模拟方法研究了不同流变性质的表面活性剂湍流减阻流动的规律。数值计算方法为有限差分法,时间项采用Adams-Bashforth格式,空间项采用二阶有界格式。讨论了粘弹性能与减阻率的关系。
Direct numerical simulations were performed on the drag-reducing flow by surfactant additives at various rheological properties. The numerical method was a finite difference scheme. The unsteady term was discretised by Adams-Bashforth scheme and the spatial terms were discretised by a second-order bounded scheme. The relationship between the viscoelastic energy and the drag-reduction rate was discussed.