- #1
min_ht
- 3
- 1
Hello,
The particle Reynolds number makes me confused and I hope someone can help me on this please!
Normally (as I read in every books and papers) that when a bubble or drop rises in a fluid, the bubble/drop Reynolds number is calculated by:
Re = ρUD/μ
where U is particle velocity, D can be particle diameter, and ρ and μ are density and viscosity of continuous fluid
my question is why don't use ρ and μ of bubble/drop? why use them of surrounding fluid?
what is the physical meaning of this Re?
Thanks in advance.
The particle Reynolds number makes me confused and I hope someone can help me on this please!
Normally (as I read in every books and papers) that when a bubble or drop rises in a fluid, the bubble/drop Reynolds number is calculated by:
Re = ρUD/μ
where U is particle velocity, D can be particle diameter, and ρ and μ are density and viscosity of continuous fluid
my question is why don't use ρ and μ of bubble/drop? why use them of surrounding fluid?
what is the physical meaning of this Re?
Thanks in advance.