critical zone friction factor
critical zone friction factor
For Re between 2000 and 4000 the flow is unstable and there actually is no definite friction factor. Churchill's equation does give unique values in this range, which makes computer solutions feasible but you should avoid this zone in practice. See the FAQ by quark in this regard FAQ378-1236: Friction Factor Expressions - Implicit and Explicit
Katmar Software - Engineering & Risk Analysis Software
http://katmarsoftware.com
"An undefined problem has an infinite number of solutions"





RE: critical zone friction factor
Only put off until tomorrow what you are willing to die having left undone. - Pablo Picasso