演示流体压强与流速关系的实验装置

Experimental device demonstrating the relationship between flow pressure and velocity

利用有机玻璃管、吸管、泡沫球等简易材料自制了演示流体压强与流速关系的实验装置.该装置有效地解决了小球随意滚动、吹气方向不固定等问题.实验用泡沫球代替乒乓球,并将其放置在玻璃管中放置,使实验过程不受外界空气影响,且较轻的泡沫球更易运动,实验效果更明显.利用该原理还自制了模拟非洲草原犬鼠洞穴的演示装置,有趣且直观地演示了犬鼠洞穴中的气体流向.

Using plexiglas tubes,straws,foam balls and other simple materials,an experimental device was made to demonstrate the relationship between flow pressure and velocity.The device could effectively solve the problems caused by the random rolling of the balls and the changing of the blowing direction.In this device,foam balls instead of table tennis balls,was placed in a plexiglas.These improved measures avoided the impact of outside air,and made the lighter foam balls easier to move.The experimental phenomenon was obvious.Using this method,an interesting simulation device of African cynomys caves was also made.It could visually demonstrate the gas flow in the cynomys caves.