What happens if you go to higher Reynolds numbers and more turbulent flow? If water composition does not matter, what is then the reason for flocculation, are the electrostatic forces between particles already strong enough at low Ionic strength??
At higher Reynolds numbers (i.e. flow velocity) ripple formation will cease, depending on the original grain size mix. Wih pure clays the upper limit is around 35 cm/s (5 cm flow depth), if there is a substantial silt component it may move higher. Higher ionic strength furthers floccule formation, but is not an absolute requirement. Already at low ionic strength the electrostatic forces between particles allow flocculation. Not as vigorous as with high salinity, but sufficient nonetheless.
What happens if you go to higher Reynolds numbers and more turbulent flow? If water composition does not matter, what is then the reason for flocculation, are the electrostatic forces between particles already strong enough at low Ionic strength??
JUNIAGLORIA 2 years ago
At higher Reynolds numbers (i.e. flow velocity) ripple formation will cease, depending on the original grain size mix. Wih pure clays the upper limit is around 35 cm/s (5 cm flow depth), if there is a substantial silt component it may move higher. Higher ionic strength furthers floccule formation, but is not an absolute requirement. Already at low ionic strength the electrostatic forces between particles allow flocculation. Not as vigorous as with high salinity, but sufficient nonetheless.
shalemaster 2 years ago