A smooth square cylinder is put in 15 °C flowing water. The flow direction is perpendicular to the long axis of the cylinder (parallel to the square section). The edge length of the square is s=2.0m. The long axis length is L=5.0m. The flow velocity is v=0.046 m/s. The density of water is ρ=1000kg/m3. T he dynamic viscosity is η=1.15×10-3kg/m·s. (2) Find the drag coefficient CD_________
A smooth square cylinder is put in 15 °C flowing water. The flow direction is perpendicular to the long axis of the cylinder (parallel to the square section). The edge length of the square is s=2.0m. The long axis length is L=5.0m. The flow velocity is v=0.046 m/s. The density of water is ρ=1000kg/m3. T he dynamic viscosity is η=1.15×10-3kg/m·s. (2) Find the drag coefficient CD_________
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A smooth square cylinder is put in 15 °C flowing water. The flow direction is perpendicular to the long axis of the cylinder (parallel to the square section). The edge length of the square is s=2.0m. The long axis length is L=5.0m. The flow velocity is v=0.046 m/s. The density of water is ρ=1000kg/m3. T he dynamic viscosity is η=1.15×10-3kg/m·s.
(2) Find the drag coefficient CD_________
Transcribed Image Text:A smooth square cylinder is put in 15 °C flowing water. The flow direction is perpendicular
to the long axis of the cylinder (parallel to the square section). The edge length of the square
is s=2.0m. The long axis length is L=5.0m. The flow velocity is v=0.046 m/s. The density
of water is p=1000kg/m³. The dynamic viscosity is n=1.15×10-³kg/m-s.
(2) Find the drag coefficient CD_
Flow
Drag coefficient, CD
10
1
8
4
2
8
6
4
2
10-1
102
2
Square cylinder
10³
2
4 68
104
Cylinder
2
Sphere
4 68
105
Reynolds number, N
(b) CD vs. Ng for higher values of Ng
2
4 68
8
6
4
2
8
6
10
4
2
1
∙10-1
106
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