摘要
根据计算流体动力学和数值传热学理论建立了考虑浮力作用的热射流水平排放及浮升规律的数学模型,采用有限体积法离散求解三维热射流的数学模型,对圆形热射流和椭圆形热射流的温度分布特性进行了数值计算分析,得到了圆形热射流与椭圆形热射流轨迹的温度场分布图像,分析了出口形状对热射流轨迹温度分布的影响.对计算结果的分析表明:椭圆形出口有利于加快热射流的热量扩散,能够更好地减弱热排放对环境的热污染.
According to the theory of computational fluid dynamics and numerical heat transfer,the buoyant rule mathematics model of horizontal heated water jets was established.The thermal characteristic of the round and elliptic heated water jets was calculated with numerical analysis by finite volume method.The temperature profile of the round and elliptic heated water jets was obtained.The effect of outlet′s shapes on the temperature distribution of the heated water jet path was analyzed.The elliptic outlet will enhance the thermal diffusion of heated water jet and decrease thermal pollution on the environment effectively.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第8期62-66,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国防预研项目
关键词
浮力射流
数值模拟
湍流模型
温差
横流
buoyant jet
numerical simulation
turbulence model
temperature difference
cross flow
