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基于遗传算法的油轮中剖面横构件优化设计 被引量:5
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作者 王宏伟 任慧龙 戴仰山 《哈尔滨工程大学学报》 EI CAS CSCD 2003年第1期14-16,共3页
油轮中剖面横构件优化设计的设计变量为连续和离散的混合变量,文中引入的遗传算法能很好地解决连续和离散混合设计变量的优化问题.与其他优化方法相比,遗传算法(GA)的突出优点是能求得全局最优解.此外,GA不依赖于初始解,所以大大减少了... 油轮中剖面横构件优化设计的设计变量为连续和离散的混合变量,文中引入的遗传算法能很好地解决连续和离散混合设计变量的优化问题.与其他优化方法相比,遗传算法(GA)的突出优点是能求得全局最优解.此外,GA不依赖于初始解,所以大大减少了选取一个合适的初始解的工作量.用经过改进的遗传算法来优化3艘油轮的中剖面横构件,在强度满足的条件下,重量分别减轻了1%~2%,取得了令人满意的结果,说明遗传算法用于结构优化设计是可行且高效的. 展开更多
关键词 油轮优化设计 遗传算法 混合设计变量 全局最优解
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Turbocharging the DA465 gasoline engine
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作者 张鹏奇 宗立军 王银燕 《Journal of Marine Science and Application》 2008年第2期111-115,共5页
In order to improve performance of the DA465Q gasoline engine, a substantial amount of research was done to optimize its turbocharging system. The research led to the GT12 turbocharger being selected and its turbochar... In order to improve performance of the DA465Q gasoline engine, a substantial amount of research was done to optimize its turbocharging system. The research led to the GT12 turbocharger being selected and its turbocharging parameters being settled. Based on these tests, rational matching was worked out for respective components of the turbocharging system. Results show that this turbocharger allows the engine to easily meet the proposed requirements for power and economic performance, giving insight into further performance improvements for gasoline engines. 展开更多
关键词 TURBOCHARGING gasoline engine turbocharging system TURBOCHARGER
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