極微少量液体の流量計測に関する基礎的研究

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タイトル別名
  • Fundamental study on flow measurement of extremely small flow rates of a liquid.

説明

Concerning with flow control and measurement of extremely small flow rates of a liquid, an experimental study on the mass of a falling droplet, m, from a capillary tube was carried out. The liquid used was water and methanol. The capillary tubes with outer diameters, D, from 1 to 10 mm, were made of teflon, brass and stainless steel. The main results obtained are as follows : (1) the mass of the droplet is given the following general equation regardless of the surface tension, σ, of the liquid, m/ρD3=2.15(σ/ρgD2)1.06, (2) the above equation enables one to measure the flow rate for very small quantities.

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