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1) Laminar Flow

- üڵ ̷ ϰ Ȱϰ ̲鼭 帣
- Reynolds No. < 2000

2) Turbulent Flow

- üڵ ұĢ θ ȸϸ鼭 ұĢϰ 帣
- Reynolds No. > 4000

3) Reynolds No.

4) ( SPECIFIC GRAVITY), SG

ü е ǥ ü(, )
SG(gas) = (gas)/ (air) = (gas)/1.205 kg/
SG(liquid) = (liquid)/ (water) = (liquid)/998 kg/

5) (VISCOSITY),

- ü ̿  Ͼ  Ϸ