Heat balance simulation of drained aluminum reduction cell

Compared with a conventional Hall Heroult cell(H H cell), the interpolar distance of a drained cell can be reduced significantly and the cell voltage and heat produced in the electrolysis will decrease greatly as well, which makes it crucial to achieve a new heat balance in the drained cell. A half anode cathode slice model of a hypothetical drained cell retrofitted from a 160 kA currently used in H H cell was developed for the thermo electric calculation and simulation. The results were presented and analyzed and possible approaches for setting up a new heat balance in a drained cell were discussed.

卡车-无人机联合取送货模式下物流优化

为有效协调正逆向物流,利用无人机成本低、受地面交通状况影响少的特点,在无人机电池能耗随载重变化、同时取送货情形下,提出卡车-无人机联合取送货模式,构建两阶段求解方法。第1阶段,提出"最大重量判断法"构造初始可行解,为货物指派拾取或配送车辆并确定需要卡车数量;第2阶段,采用基于节点特征的改进模拟退火算法优化卡车-无人机路径,最小化总成本。两阶段均采用Python编程实现。仿真结果表明,提出的卡车-无人机联合取送货模式较其他模式可有效减少物流成本。"最大重量判断法"可显著提高算法收敛速度和效果。

新车型 新故障——新蓝鸟日常养护和常见典型故障

新蓝鸟指的是东风汽车有限公司乘用车公司2003年推出的EQ7200 04款蓝鸟轿车（BLUEBIRD），车徽标识仍为”NISSAN”。其最大卖点是设置了与全球资讯同步的蓝牙系统（Bluetooth）．运用手机（具有蓝牙功能)和车载电话，便能迅捷方便地进行通话联络。但是新蓝鸟同其它推出的新车型一样投入市场使用后，也存在部分不足之处，为方便使用和维修，将出现的典型故障介绍给大家。