CFD Lab
–
SMEC, VIT University
Expt. No.:
3
COMPUTATIONAL ANALYSIS OF
LAMINAR FLOW THROUGH A PIPE
Register Number
16BME0968
Date :10/1/2019
Slot: L49+L50
OBJECTIVE OF THE EXPERIMENT:
To simulate the Two dimensional steady state
Laminar flow through a pipe of given
dimensions.
PROBLEM DESCRIPTION:
Consider fluid flowing through a circular pipe of constant radius. The pipe diameter
D
= 0.1 m
and length
L
= 10 m. The inlet velocity
Ūz
= 1 m/s. Consider the velocity to be constant over the
inlet cross-section. The fluid exhausts into the ambient atmosphere which is at a pressure of 1
atm. Take density
ρ = 1 kg/ m
³
and the Reynolds number (
Re)
based on the pipe diameter is
1000. Calculate the Entrance region length for laminar flow and verify with computational result.
Also, plot the following, (L
e
/d = 0.06 R
e
)
1.
Pressure contour along the axis
2.
Velocity contour along the axis
3.
Velocity vector along the axis
4.
Velocity Plot at the outlet
SOFTWARES USED:
1.
ANSYS
–
WORKBENCH / GAMBIT and FLUENT
GOVERNING EQUATION:
Continuity Equation:
u - Momentum:
v - Momentum:
