水域

In this paper a reliable commercial CFD software FLUENT is introduced to simulate the viscous fluid field around the trimaran sailing in shallow waters.

本论文就是利用较成熟的商业软件FLUENT对处浅水域情况下的三体船周围的粘性流场进行数值模拟。

Accurate simulation of fluid field around trimaran and prediction of its resistance are the most crucial technical problems in design, performance improvement and hull form optimization .

因此准确模拟浅水域三体船周围的流场和预报其的受力已成为问题的重点之一，这对三体船的设计、性能提高和船型优化有重要意义，同时也有一定的科研价值。

For the performance research of trimaran sailing in shallow waters, some advanced countries have put some efforts, in contrast with little made in our country.

三体船作为一种高性能的新船型近年来已引起造船界的兴趣，一些造船先进国家为开展这方面的研究投入了大量的人力和物力，我国在这发面起步比较晚，在该方面也开展了一定的工作并取得了一定的进展，但和先进国家还有一定的差距，尤其在三体船的性能研究方面与国外的差距更大，在浅水域三体船方面国外做了一些研究，我国在这方面的研究比较少。

Through the numerical solution of fluid field and resistance of the trimaran model in different water depth and forward speeds the computational results are compared with experimental data.

通过对不同水深和不同航速下船模周围流场的模拟和对总阻力的求解，并将计算所得结果与实验结果进行比较，表明了FLUENT软件对处理浅水域三体船粘性流场模拟和计算的有效性和准确性，为将CFD软件应用于三体船船舶性能研究的实用性和准确性提供了一些依据。

Each day in European waters more than 55,000 tonnes of oily and bilge waters and fuel waste are spilled into the sea, more than 350,000 hectares of the sea bed is impacted by trawlers and 20,000 tonnes of fish are taken out, says the report.

每天都有超过55，000吨的废油、舱底污水及燃料渣被排进欧洲水域，有35万多公顷的海床受到拖网渔船的影响，有20，000吨鱼被掠夺。

Greenlanders can now grow potatoes, miners are eyeing newly accessible mineral reserves and trawlermen can more easily pursue fish into northern waters.

格陵兰人现在可以种植土豆，采矿者正在注视着新的可开采的矿藏，拖船渔民可以更容易地将鱼驱赶到北部水域。

Greenlanders can now grow potatoes, miners are eyeing newly accessible mineral reserves and trawlermen can more easily pursue fish into northern waters.

格陵兰岛居民现在可以种植土豆了，矿工在寻找新的可开采矿藏，拖网渔民能更容易地将鱼群赶到北部水域。

The inability to manage the waters of Lake Victoria, which is increasing in turbidity, bodes ill for the management of the White Nile.

而在维多利亚湖（如今水质已越来越浑浊不清）水域上的管理不善对经营白尼罗河的人来说并不是好兆头。

Thursday's incident took place in waters west of the Korean peninsula - one of the tensest maritime regions in the world.

星期四的事件发生在朝鲜半岛西部的水域，这是世界上最紧张的海事地区。

As a result, many countries ask new-built ships and watercrafts that enter water area of their countries to put in maneuverability calculating book and correlative test record.

为此，许多国家都要求新建造的船舶及进入该国水域的船舶都要提交操纵性计算书和相关试验报告。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。