Development of a CFD model to simulate the dispersion of atmospheric NH3 in a semi-open barn

IF 1 4区 地球科学 Q4 METEOROLOGY & ATMOSPHERIC SCIENCES Atmosfera Pub Date : 2023-11-03 DOI:10.20937/atm.53277
Guillermo Alfonso de la Torre-Gea
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Abstract

The dispersion of atmospheric NH3 constitutes the most common passive polluting system in cattle stables. Although the studies carried out through computational fluid dynamics (CFD) are focused on improving the environmental conditions in situ to increase the productivity of stables, they do not refer to determining the environmental impact of NH3 emissions into the atmosphere. This work evaluated the distribution of the NH3 flux inside a barn using CFD and its relationship with environmental conditions through probabilistic analysis by the K2 algorithm. The initial data on environmental conditions were wind speed and direction, maximum temperature, and humidity from the nearest weather station in a region characterized by hot weather conditions during summer. The vertical trajectory was used to analyze the impact of long-range transport on the spatial distribution, where 75% is between 0 and 5 m in height, and 25% is between 10 and 20 m outside the eaves. The work concluded that temperature is the main parameter of influence.
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建立了模拟半开放式谷仓中大气NH3扩散的CFD模型
大气NH3的扩散构成了牛棚最常见的被动污染系统。虽然通过计算流体动力学(CFD)进行的研究侧重于改善原地环境条件以提高马厩的生产力,但它们并不涉及确定NH3排放到大气中的环境影响。利用CFD计算了粮仓内NH3通量的分布,并利用K2算法对其与环境条件的关系进行了概率分析。环境条件的初始数据是风速和风向、最高温度和湿度,来自最近的气象站,这些气象站在夏季以炎热的天气条件为特征。采用垂直轨迹分析远程输运对空间分布的影响,其中75%的输运高度在0 ~ 5 m之间,25%的输运高度在屋檐外10 ~ 20 m之间。研究表明,温度是主要的影响参数。
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来源期刊
Atmosfera
Atmosfera 地学-气象与大气科学
CiteScore
2.20
自引率
0.00%
发文量
46
审稿时长
6 months
期刊介绍: ATMÓSFERA seeks contributions on theoretical, basic, empirical and applied research in all the areas of atmospheric sciences, with emphasis on meteorology, climatology, aeronomy, physics, chemistry, and aerobiology. Interdisciplinary contributions are also accepted; especially those related with oceanography, hydrology, climate variability and change, ecology, forestry, glaciology, agriculture, environmental pollution, and other topics related to economy and society as they are affected by atmospheric hazards.
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