Viscosity and pressure relation

Click For Summary
SUMMARY

The relationship between viscosity and pressure is defined by the behavior of liquids and gases under varying pressure conditions. For most liquids, viscosity increases with pressure, while gases exhibit minimal dependence on pressure changes. Notably, the viscosity of water decreases with increasing pressure due to enhanced cohesive forces that facilitate flow. This distinction highlights the differing physical and chemical properties of substances under pressure.

PREREQUISITES
  • Understanding of fluid dynamics
  • Basic chemistry concepts related to viscosity
  • Knowledge of cohesive forces in liquids
  • Familiarity with the properties of gases and liquids under pressure
NEXT STEPS
  • Research the molecular structure of water and its impact on viscosity
  • Study the effects of pressure on the viscosity of various liquids
  • Explore the principles of fluid dynamics in relation to pressure changes
  • Investigate the differences in viscosity behavior between gases and liquids
USEFUL FOR

Chemists, fluid dynamics researchers, and students studying the properties of liquids and gases under pressure will benefit from this discussion.

Hardik Batra
Messages
130
Reaction score
5
i know the relation between these two.

with increase in pressure, the viscosity of liquids (expect water] increases while that of gases is practically independent of pressure.

The viscosity of water decreases with increase in pressure.

i want to know the reason behind this.
 
Physics news on Phys.org
Hardik Batra said:
i know the relation between these two.

with increase in pressure, the viscosity of liquids (expect water] increases while that of gases is practically independent of pressure.

The viscosity of water decreases with increase in pressure.

i want to know the reason behind this.


it is a bit of chemistry not physiics as the pressure increases the cohessive forces increases which in turn decreases the viscosity of liquuid as
cohesive force doesn't slow water to flow easily among its own.
 
Not everything is same iin chem and phy some differences are also there..
 

Similar threads

Undergrad How does friction in a pipe occur, with the "no slip condition" ?
  • · Replies 25 ·
Replies
25
Views
2K
Undergrad Can turbulence help measure liquid viscosity more accurately?
  • · Replies 8 ·
Replies
8
Views
2K
High School Do fluid oscillation characteristics depend on the viscosity of a fluid?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Parabolic Pressure Distribution in a Jet
  • · Replies 8 ·
Replies
8
Views
2K
Graduate Rocket propulsion explained only through pressure differential
  • · Replies 46 ·
2
Replies
46
Views
5K
High School How Does Viscosity and Turbulence Affect Fluid Flow Between Plates?
  • · Replies 6 ·
Replies
6
Views
2K
High School Question about pressure of a liquid
  • · Replies 8 ·
Replies
8
Views
1K
Undergrad Sound pressure and inverse distance law
  • · Replies 5 ·
Replies
5
Views
3K
High School Why does increasing the height of a water tower increase water pressure?
  • · Replies 16 ·
Replies
16
Views
7K
Viscosity by Falling Sphere Equations
  • · Replies 2 ·
Replies
2
Views
2K