采用低温太阳能集热的旋转热浮力射流风能利用概念  

A New Wind Energy Concept of Swirling Buoyant Jet Driven by Low-Temperature Solar Energy

作　　者：顾兆林[1] 张铭旭[1] 

机构地区：[1]西安交通大学人居环境与建筑工程学院,西安710049

出　　处：《西安交通大学学报》2013年第1期7-10,共4页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(11272250)

摘　　要：通过与自然界尘卷风诱发条件与气象要素的类比,将低温太阳能能量聚集与旋转热浮力射流相结合,提出一种可控热成旋风风能利用系统的概念,属于涉及大气物理学、流体力学、工程热物理等的交叉学科工程科学问题。分析了可控热成旋风风场的流体力学基础、特点,以及关键科技问题,包括聚热棚的结构与温度场分布、入流预旋导叶结构与涡量生成、上部敞口结构与旋转热浮力射流的卷吸特性、旋转上升气流流场与螺旋风叶的相互作用等,为可控热成旋风风能利用系统的应用与开发提供了研究思路。Dust devil is a short-life and small-scale surface-heated whirlwind system in nature.Sustainable dust devil-like whirlwind possesses potential of wind power generation.Analogous to the induced conditions of dust devil,a new wind energy concept of swirling buoyant jet driven by low-temperature solar energy was proposed by using artifical solar-concentrating shed and air inflow prerotation technologies.This kind of swirling buoyant jet is an interdisciplinary concept,relating to atmospheric physics,fluid mechanics and thermophysics.The theory of stable swirling buoyant jet and the key technologies of the heating design of solar-concentrating shed and the air inflow prerotation part were initially put forward for the development of such a new wind system of low-temperature solar-powered whirlwind.

关 键 词：旋转浮力射流 风能 低温太阳能 

分 类 号：O358[理学—流体力学] TK89[理学—力学]