Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 6 (Q.No. 4)
4.
The dynamic viscosity of gases __________ with rise in temperature.
Discussion:
5 comments Page 1 of 1.
Rajendra said:
6 years ago
In liquids,
If we are increasing the temperature, both kinematic and dynamic (absolute) viscosity DECREASES.
In gases,
If we are increasing the temperature, both kinematic and dynamic viscosity increases.
If we are increasing the temperature, both kinematic and dynamic (absolute) viscosity DECREASES.
In gases,
If we are increasing the temperature, both kinematic and dynamic viscosity increases.
(1)
Vicky said:
8 years ago
When increases temperature random motion of gas molecules are also go fastly and the reason of the viscosity of the gas is a random motion of particles (molecules) of gas.
So, the viscosity is increased.
So, the viscosity is increased.
Adjusted to see you said:
9 years ago
Absolutely you are right @Waseem.
Gaurav said:
1 decade ago
Viscosity is the resistance to the flow so viscosity should decrease in gases while increasing the temperature.
Waseem iqbal said:
1 decade ago
For liquid dynamic viscosity depends upon the cohesive forces which reduces with temperature so as the viscosity.
But for gases viscosity depends upon the diffusion of momentum which increases with temperature means the gas particle will diffuse their momentum quickly so viscosity increases.
But for gases viscosity depends upon the diffusion of momentum which increases with temperature means the gas particle will diffuse their momentum quickly so viscosity increases.
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