猪舍纵向通风流场模拟

Numerical Simulation in the Piggery under Vertical Ventilation

以育肥猪舍为研究对象,以CFD理论为基础,运用CFX软件对风机安装在一边端墙上和风机安装在猪舍四角两种情形的猪舍内纵向通风气流场与温度场进行三维稳态模拟。模拟结果为:两种纵向通风形式气流分布都比较均匀。风机在一边端墙上的纵向通风时,在靠近出口处的大部分区域,空气温度基本为30～31℃;风机在猪舍四角的纵向通风时,整个猪舍的大部分区域空气温度低于30℃。结果说明,对纵向长度较大的猪舍进行纵向通风布置时,宜采用湿帘在中间、风机在四角的气流组织形式。

This paper reported a study on piggery with the help of CFX software based on CFD. The three - dimensional steady state numerical simulation of airflow and temperature pattern was undertaken in the piggery under vertical ventilation, where fans were fixed on the end wall and fans were fixed on four conners. Simulation results showed that both of their airflow distribution were uniform. Under the condition that fans were fixed on the end wall, air temperature was 30 -31℃ close to outlets; Under the condition that fans were fixed on four conners, the temperature was lower than 30℃ in most of the piggery. Results indicated it was suitble that wet - pads were fixed at the middle of side wails and fans were fixed on four conners under vertical ventilation in piggery whose length was larger.