施肥器结构参数对施肥浓度影响的数值研究——基于并联式文丘里施肥器

Numerical Study on Concentration Affected by Structure Parameters——Based on Parallel Venturi Fertilizer Applicator

文丘里施肥器因为其具有结构简单、无需动力部件等优点,在国内外都有很广泛的应用。为此,在试验基础上对并联式文丘里施肥器进行模拟仿真研究,通过改变文丘里管的收缩角、扩大角和喉管直径等结构参数,得到相应的流量和吸肥量,再用数值方法根据仿真结果导出其结构参数与浓度的关系式。

Parallel venturi fertilizer applicator is widely used in irrigation because its simple structure and energy-saving.In this paper,a simulation on structure parameters,including contract angle,expansion angle and throat diameter,results that the concentration may be affected by those factors.In addition,related formulas are given as well.