崩塌落石产生涌浪的流固耦合运动分析

库区崩塌落石以直接打击和涌浪的形式威胁航道安全。三维流体力学与固体力学耦合分析崩塌落石产生的涌浪是目前该领域的研究热点和未来发展方向。以三峡库区巫峡剪刀峰河道为例,利用Flow-3D首次建立了一个k-ε湍流模型和GMO碰撞模型的流固耦合模型,假定的落石体积为1.2×10⁴ m³。流固耦合分析结果显示:运动物体在陆地斜坡上进行弹跳、翻滚、滑动;进入水体后,其运动受水体严重影响,运动物体将一部分能量传递给水体,能量传递率约为6.54%;水体获得了能量,最大涌浪达到10 m,但衰减很快,至河道中心线时浪高2.4 m,至对岸边浪高为0.89 m。根据涌浪高度大小进行了航道预警分区,建议将预警区北航道线南移350 m左右,航道内涌浪风险将大大降低,航道安全度得到提高。     

新疆阿合奇县旅游资源的SWOT分析简

新疆阿合奇县旅游资源丰富,民族文化独特,开发潜力较大。利用SWOT分析法,分析了该区托什干河谷风光、千年古树、吉鲁苏温泉地质景观、历史古迹等自然资源旅游优势和玛纳斯文化、猎鹰文化、库母兹文化、民族节日、民族美食等人文资源优势。阿合奇县存在经济欠发达、旅游产业未形成、旅游宣传力度不够等资源劣势。旅游面临政策优势、政策引导、西部大开发等机遇,行业竞争激烈、旅游品牌还未形成等挑战。从旅游开发理念、旅游营销策划、人才培养等方面提出了对策建议,为该地区发展旅游提供理论支持。     

北欧海深层水的研究进展简

As a connection region between North Atlantic and Arctic Oceans, the Nordic Sea plays a critical role in global climate system. In the Nordic Seas, surface water converts into intermediate water and deep water after cooling and other effects. These waters transport southward, and enter into North Atlantic as a form of overflow, therefore, they are the main source of the North Atlantic Deep Water(NADW), which play a key role in global ocean conveyor. The causes and processes of the deep water formation in the Nordic Seas are still uncertain. Based on a review of current and historical research results of the deep water in the Nordic Seas, the most important process for deep water formation convection is addressed. Factors and physical processes that may have impact on deep water formation are summarized. The transport of deep water in the Nordic Seas is summed up. Multi year variation of the deep water is described with the aim of giving some instructions and research directions to the readers.     

全球气候变化研究与科学数据简

By illustrating the relationship between the climate system and the scientific data, a requirement of scientific data for the earth system research has been proposed to be paid more attention to climate change studies. The research progresses of global climate change in China for the recent 10 years have been reviewed and the important role of observation datasets and assimilated production in the global climate change has been pointed out. Furthermore, the meteorological data sharing situation