盐水实验模型盐源入口湍流强化设计研究  

DESIGN RESEARCH OF TURBULENCE INTENSITY OF ENTRANCE IN SALT-BATH SCALED MODEL

作　　者：宋天珩[1] 张智力[1] 朱鸣[1] 王健[1] 

机构地区：[1]同济大学建筑设计研究所(集团)有限公司,上海200092

出　　处：《井冈山大学学报（自然科学版）》2014年第5期1-5,共5页Journal of Jinggangshan University (Natural Science)

基　　金：上海市科委科技攻关项目(09dz1207704)

摘　　要：针对盐水实验盐源入口存在初始动量的问题,设计了盐源入口的湍流强化装置。通过计算的方法,确定不同热源强度下的盐源入口尺寸;采用CFD模拟的方法,利用湍流强度和速度均匀性指标来确定湍流强化装置的设计构造,实现盐源注入口小动量和大湍流度的注入条件。实验结果表明,能有效地减小其初始动量问题,提高了盐水实验在模拟热源附近羽流发展的准确性。The initial momentum exists in the entrance of salt-bath model, so we design the turbulence intensity of entrance. Through the method of calculation, the size of salt source is obtained in different heat sources. Furthermore, the structure of turbulence intensity device is designed based on the CFD simulation method. The turbulence intensity and velocity uniformity index is two indexes to select the optimal structure. The device can achieve the small momentum and large turbulence in the entrance of salt source. The experiment shows that the method can reduce the initial momentum, and improve the simulative accuracy of flume nearby the heat source in salt-bath scaled model.

关 键 词：盐水模型实验 湍流强化 数值模拟 优化设计 

分 类 号：O357.54[理学—流体力学]