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The University of Texas Rio Grande Valley College of Engineering and Computer Science Department of Civil Engineering CIVE 3115 Fluid Mechanics & Hydraulics Laboratory Fall 2018 Laboratory Section # 3115 Group # 1 Laboratory Analysis For Inside Wind T$20.49
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The University of Texas Rio Grande Valley College of Engineering and Computer Science Department of Civil Engineering CIVE 3115 Fluid Mechanics & Hydraulics Laboratory Fall 2018 Laboratory Section # 3115 Group # 1 Laboratory Analysis For Inside Wind T
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Course
ELECTRICAL And electronics
Institution
ELECTRICAL And Electronics
The University of Texas Rio Grande Valley
College of Engineering and Computer Science
Department of Civil Engineering
CIVE 3115
Fluid Mechanics & Hydraulics Laboratory
Fall 2018
Laboratory Section # 3115
Group # 1
Laboratory Analysis For
Inside Wind Tunnel 2
The University of Texas Rio Grande Valley
College of Engineering and Computer Science
Department of Civil Engineering
CIVE 3115
Fluid Mechanics & Hydraulics Laboratory
Fall 2018
Laboratory Section # 3115
Group # 1
Laboratory Analysis For
Inside Wind Tunnel 2
Prepared For:
Dr. Abdoul Oubeidillah
, Background and Theory:
A boundary layer is a thin region that takes into account both viscous and inertial effects.
Because of the presence of viscous effects, Euler's equation fails in this region. The Reynolds
number determines whether a boundary layer is laminar or turbulent. A smooth flow with a
Reynolds’s number less than 500,000 characterize a laminar boundary layer. Although a laminar
boundary layer produces less skin friction drag, it is not very stable. Stream wise velocity
changes consistently as one advances away from the wall in a laminar boundary layer.
The equations used in the experiment are:
Reynolds’s number:
ρUx
ℜ=
μ
…………………eq1
Re = Reynolds’s Number δ = Density of Air (kg/m3)
U = Freestream Velocity (m/s)
x = diameter (m)
µ = Dynamic Viscosity (kg/ (m*s))
Boundary layer thickness for laminar flow:
5x
( δ )=
√R ¿
¿
…………………………..eq2
δ = boundary layer thickness (m) x = Position (m) Re = Reynolds number
Boundary layer thickness for turbulent flow:
0.37∗x
δ=
R1 /5
…………………………eq3
δ = boundary layer thickness (m) x = Position (m) Re= Reynolds number
Objective:
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