Re is a non-dimensional number to show the onset of turbulence Re pVD VD Res 2000 2000 Re $3000 Rez 3000 D-diameter of the conduit (or, characteristic length) v-kinematic viscosity, u-absolute viscosity The above definition of Reynolds number is given for pipe flow. If it is for airflow (temp = 20°C, v= 1.5x105 m²/s) with a velocity of 0.1 m/s over a thin plate of semi-infinite extent, the transition region length over the thin plate will be None of the answers are correct. laminar flow transition flow (unpredictable) turbulent flow Transition region length = 435 m Transition region length = 450 m Transition region length = 15 m
Re is a non-dimensional number to show the onset of turbulence Re pVD VD Res 2000 2000 Re $3000 Rez 3000 D-diameter of the conduit (or, characteristic length) v-kinematic viscosity, u-absolute viscosity The above definition of Reynolds number is given for pipe flow. If it is for airflow (temp = 20°C, v= 1.5x105 m²/s) with a velocity of 0.1 m/s over a thin plate of semi-infinite extent, the transition region length over the thin plate will be None of the answers are correct. laminar flow transition flow (unpredictable) turbulent flow Transition region length = 435 m Transition region length = 450 m Transition region length = 15 m
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Re is a non-dimensional number to show the onset of turbulence
Re
pVD VD
Res 2000
2000 Re $3000
Rez 3000
D-diameter of the conduit (or, characteristic length)
v-kinematic viscosity, -absolute viscosity
The above definition of Reynolds number is given for pipe flow.
If it is for airflow (temp = 20°C, v = 1.5x105 m²/s) with a velocity
of 0.1 m/s over a thin plate of semi-infinite extent, the transition
region length over the thin plate will be
None of the answers are correct.
laminar flow
transition flow (unpredictable)
turbulent flow
Transition region length = 435 m
Transition region length = 450 m
Transition region length = 15 m
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