“水怪”之谜--神湖圣象

四川省西部的九龙县内、海拔7556米的贡嘎山西南麓，有一个被当地人奉为“神湖”的高原湖泊——猎塔湖。猎塔湖“水怪”也是我国著名的“水怪”之一。

“水怪”之谜--喀纳斯魅影

新疆的喀纳斯湖，一个风光如画的地方，关于“水怪”的传说在这里流传已久，而且还有大量的目击证明。最近的目击事件发生在2005年6月。

“水怪”之谜--尼斯湖怪兽

苏格兰的“尼斯湖怪兽”算得上是世界上最著名的“水怪”事件。70多年来媒体不断曝光所谓事实“真相”，不久前又有最新版本出现，真是让人真假莫辨。

“水怪”之谜——天池水怪

近百年来，世界各地关于“水怪”出没的传说不绝于耳，却又扑朔迷离、难辨真伪。那些目睹过“水怪”的人除了惊奇还有恐惧，那些据说有“水怪”出没的地方也因此披上了神秘的面纱。那么，目击者看到的“水怪”到底是什么？最近，本刊连续接到读者朋友来信，希望得到这个问题的答案。为此，在中央电视台《走近科学》栏目支持下，本刊特别策划系列专题文章——《“水怪”之谜》以飧读者。

改进“水怪”钓鲢鱼

人们常说：“鲢鱼不好钓。”跟钓其他鱼比较，相对而言的确要难一些，难就难在长期没有好用可靠的钓鲢关键钓具问世。

世界各地“水怪”知多少

说起“水怪”来，世界各地的水怪还真不少呢。最著名的莫过于英国的尼斯湖水怪了。

Effect of the shaft eccentricity and rotational direction on the mixing characteristics in cylindrical tank reactors

Strategy of the shaft eccentricity is introduced to enhance the mixing characteristics in a flat bottomed cylindrical vessel without baffles. The mixing is ensured by a six-curved blade impeller. Three solutions which are models of food emulsions are used as working fluids. These solutions have a shear thinning behavior modeled by the power-law. The effects of fluid properties, stirring rates, impeller rotational direction and impeller eccentricity on the 3D flow fields and power consumption are investigated. Three values of impeller eccentricity are considered, namely 0%, 24% and 48% of the vessel diameter. It is found that the opposite clockwise rotational direction reduces the power consumption, compared with the clockwise rotational direction. Also, the obtained results show that an impeller placed at an eccentric position between 24% and 48% of the vessel diameter and at the third of the vessel height may ensure the best mixing characteristics.

使用"水怪"钓鲢鳙

“水怪”集诱饵、钓饵于一体，无论使用手竿、海竿钓鲢鳙，均可取得神奇的效果。