摘要：作者：李春林; 魯孟群; 張杰 關鍵詞：暖通空調論文,噴嘴,霧化,流場 【中文摘要】 利用計算流體軟件FLUENT建立了噴水室內噴嘴及噴嘴出口外部流場的三維數學模型。采用標準κ-ε湍流模型模擬了噴嘴內部及出口外部流場,并根據各種情況分析了噴嘴參數對流場速度分布、壓力分布和出口速度的影響。結果表明,噴嘴的擴散角和擴散段尺寸對噴嘴及出口流場影響較大:噴嘴的擴散角直接影響噴嘴出口后液滴的方向和速度大小,并影響流場的湍流分布情況,影響流場的紊流區域分布,z*終影響水滴與風流的熱濕交換;擴散段尺寸影響流場壓力分布,特別會產生負壓區直接影響射流后液滴的狀態。 【英文摘要】 It built a three-dimensional model of flow field of the internal and export of the nozzle in a spraying room, using the soft ware FLUENT. It simulated the flow field of internal and export of the nozzle by using the standard κ-ε model. and it analyzes the parameters affect to the velocity distribution,pressure distribution and the velocity of the exit various conditions. The results show that, the diffusion angle and the size of divergent section have a great influence with the exit flow field. As the diffusion angle has a direct influence to the droplet’s direction and value, and they also affect the turbulence intensity distribution, and finally affect the heat and mass exchange between the droplet and wind flow; The size of divergent section affects the pressure distribution of the flow field, especially it affects the state of the droplet directly with the negative pressure. 【中文關鍵詞】 噴嘴; 霧化; 流場; 數值模擬【英文關鍵詞】 Nozzle; Atomization; Flow field; Numerical simulation