• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Society of Naval Architects and Marine Engineers Annual Meeting; 2005; >New Promising Generation of Twin-Gondola LNG Carriers Optimized with the Aid of CFD Calculations
【24h】

New Promising Generation of Twin-Gondola LNG Carriers Optimized with the Aid of CFD Calculations

机译：借助CFD计算优化的新一代双缆LNG船

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As natural gas is becoming an important energy source, a large fleet is needed to transport it in liquefied form across the oceans in specially designed LNG carriers from mainly the Middle East towards the Far East. During the overall design process of such a vessel the shape of the hull form and its propulsors play an important role from a hydrodynamic point of view. This paper describes the design of a twin-gondola LNG carrier for Navantia. The twin-gondola aft body has proven to be an adequate design concept, but due to the complexity of the flow around the aft body the design should be carried out with great care. Computational Fluid Dynamics (CFD) tools are extremely valuable in the hydrodynamic optimization process of the hull. In this design both potential flow codes and viscous flow codes have been used to obtain the optimum hull form. With the results of the PARNASSOS viscous flow calculations it was possible to make decisions with regard to the horizontal angle and the inclination of the gondolas, and the slope of the buttocks in the area between the gondolas. Special attention has been paid to avoid flow separation around the aft body. The gondolas have been oriented in such a way that maximum efficiency is achieved. The performance of the resulting design has been verified by model tests in MARIN's Deep Water Towing Tank. Given the very promising results of this new generation of LNG carriers, achieving besides the excellent propulsive properties also a higher payload target, the yard became more competitive and is expecting quite some orders for this particular ship type.
机译：由于天然气正在成为重要的能源，因此需要大量的船队以专门设计的液化天然气运输船以液化形式将其通过大洋从中东向远东运输。从流体力学的观点来看，在这种船的总体设计过程中，船体形状及其推进器的形状起着重要的作用。本文介绍了用于Navantia的双吊船液化天然气运输船的设计。事实证明，双绞车船尾是适当的设计概念，但是由于船尾周围流的复杂性，设计时应格外小心。计算流体动力学（CFD）工具在船体的流体动力学优化过程中非常有价值。在这种设计中，潜在的流代码和粘性流代码都已用于获得最佳船体形式。通过PARNASSOS粘性流计算的结果，可以对吊船的水平角度和倾斜度以及吊船之间区域的臀部坡度做出决策。特别注意避免船尾周围的气流分离。吊船的定位方式可实现最大效率。最终设计的性能已通过MARIN的深水拖曳水箱中的模型测试进行了验证。鉴于新一代液化天然气运输船取得了令人鼓舞的结果，除实现出色的推进性能外，还实现了更高的有效载荷目标，该船厂变得更具竞争力，并期望这种特殊船型获得大量订单。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号