卷帘牛舍矮墙对舍内清粪通道地面温度影响的数值模拟
发布时间：2018-09-16 21:36
【摘要】：针对西北地区卷帘牛舍冬季地面结冰,造成奶牛行走不便、打滑、跪地甚至伤害牛蹄、乳头,以及无法使机械刮粪系统正常作业,影响舍内卫生等问题,采用计算流体力学的方法,模拟该地区6组矮墙设计方式下卷帘牛舍地面温度场的分布,并对其中3组进行现场试验验证。结果表明,不同矮墙高度和外保温方式对矮墙附近的地面温度场有很大影响:1)矮墙高度对地面温度的影响程度大于墙体保温措施的应用,矮墙高度由0.5m增加到1.5m时,距矮墙2m范围内的地面温度可提高1.0℃;2)矮墙高度与墙体保温具有交互效应,采用1.2m矮墙加外保温时与1.4m矮墙无外保温时的地面温度基本相同,综合考虑矮墙高度和设置保温层对夏季通风和建造成本的影响,建议采用1.2m矮墙加外保温设计。
[Abstract]:In view of the freezing of the ground in winter in the northwest region of China, which causes the cows to walk inconveniently, slide, kneel and even injure the hoof, nipples, and the failure to make the mechanical defecation system work normally and affect the sanitation in the shed, etc. By using computational fluid dynamics (CFD) method, the temperature field distribution of curly cowshed in 6 groups of short wall designs in this area was simulated, and three of them were verified by field tests. The results show that different height of short wall and external insulation have great influence on the ground temperature field near the short wall.) the influence of the height of short wall on the ground temperature is greater than that of the application of wall insulation, when the height of short wall increases from 0.5 m to 1.5 m, The ground temperature within 2 m from the short wall can be increased by 1.0 鈩，
本文编号：2244879
[Abstract]:In view of the freezing of the ground in winter in the northwest region of China, which causes the cows to walk inconveniently, slide, kneel and even injure the hoof, nipples, and the failure to make the mechanical defecation system work normally and affect the sanitation in the shed, etc. By using computational fluid dynamics (CFD) method, the temperature field distribution of curly cowshed in 6 groups of short wall designs in this area was simulated, and three of them were verified by field tests. The results show that different height of short wall and external insulation have great influence on the ground temperature field near the short wall.) the influence of the height of short wall on the ground temperature is greater than that of the application of wall insulation, when the height of short wall increases from 0.5 m to 1.5 m, The ground temperature within 2 m from the short wall can be increased by 1.0 鈩，
本文编号：2244879
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