In this work, the Lagrangean Relaxation method has been discussed to solve different sizes of capacitated facility location problem (CFLP). A good lower bound has been achieved on the solution of the CFLP considered i...In this work, the Lagrangean Relaxation method has been discussed to solve different sizes of capacitated facility location problem (CFLP). A good lower bound has been achieved on the solution of the CFLP considered in this paper. This lower bound has been improved by using the Volume algorithm. The methods of setting two important parameters in heuristic have been given. The approaches used to gain the lower bound have been explained. The results of this work have been compared with the known results given by Beasley.展开更多
海洋内波是发生在密度分层海水中的波动,对潜艇航行的稳定性和悬停性都有重要影响。本文采用有限体积自适应半结构多重网格法求解Navier-Stokes方程,并用VOF(Volume of Fluid)方法追踪两层流体界面,应用双推板造波法进行内孤立波数值造...海洋内波是发生在密度分层海水中的波动,对潜艇航行的稳定性和悬停性都有重要影响。本文采用有限体积自适应半结构多重网格法求解Navier-Stokes方程,并用VOF(Volume of Fluid)方法追踪两层流体界面,应用双推板造波法进行内孤立波数值造波,对两层流体中的内孤立波数值造波方法进行研究和探讨。数值模拟结果证实了该数值水槽数值造波的有效性和可靠性,并将潜艇放入数值水槽中,研究内孤立波流场演化的过程,为后续研究潜艇的水动力学特性打下了基础。展开更多
文摘In this work, the Lagrangean Relaxation method has been discussed to solve different sizes of capacitated facility location problem (CFLP). A good lower bound has been achieved on the solution of the CFLP considered in this paper. This lower bound has been improved by using the Volume algorithm. The methods of setting two important parameters in heuristic have been given. The approaches used to gain the lower bound have been explained. The results of this work have been compared with the known results given by Beasley.
文摘海洋内波是发生在密度分层海水中的波动,对潜艇航行的稳定性和悬停性都有重要影响。本文采用有限体积自适应半结构多重网格法求解Navier-Stokes方程,并用VOF(Volume of Fluid)方法追踪两层流体界面,应用双推板造波法进行内孤立波数值造波,对两层流体中的内孤立波数值造波方法进行研究和探讨。数值模拟结果证实了该数值水槽数值造波的有效性和可靠性,并将潜艇放入数值水槽中,研究内孤立波流场演化的过程,为后续研究潜艇的水动力学特性打下了基础。
