I want to know whether we can use Bernoulli's equation in the case of pressurized (above 5 bar) pipelines of gasoline.
Dear mohd
salaam
as you know composition of oil is very varying and its volatile component vary.although you will probably deal with 2 phase flow you need to know composition to define your flow pattern.light oils may cause churn-bubbly flow.
may be CFD simulation be useful for you.
regards
Dear Mohd,
We must first highlight difficulties of transport of thick materials, including oil: Indeed, the oil flow in the pipes is very often disturbed by the fluid-solid interaction. Since crude oil is a non-Newtonian liquid, it presents a complex flow behavior, it can not, therefore, be represented by traditional models that consider homogeneous fluids. To overcome this difficulty, it's good to use the Phan-Thien and Tanner model (MPTT) which seems very likely to model such a flow
of course you can. I am assuming you are calculation delta P.
Bernoulli via 1st law analysis gives you:
DeltaP = 1/2 x density x velocity ^2 x k
k = fl/d (f = friction factor, l = pipe length, d = pipe inside diameter.
get f from moody diagram = f(Re, pipe roughness) or use a popular iteration like Colebrook equation.
the flow state ( laminar or turbulent is based on Moody location. ) arrive at k accordingly.
The fluid type does not matter.
its either
solid
liquid
gas
Bachir Achour Sir, I wanted to know about refined petroleum product like 'Gasoline' that is lighter than water & highly volatile. Blaine Sawchuk Sir, actually i doubt that there will be a two phase system, i.e. liquid gasoline & vapour. In such case can we use Bernouli equation?
A.O. Borisyuk Sir, I wanted to know could we use the Darcy-Weisbach Equation in this case? How could I deal with a possibly two-phase flow if I were to use Navier-Stoke's equations?
Actually in one of the reference books, I found a numerical where Darcy-weisbach equation was used for gasoline flowing through a pipeline.
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