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Consider a two seater car that moves with a speed of 30 km/hr. Predict the drag force on the car treating it as a flat surface of 3.0 × 2.0 given, density of air (δ) = 1.2 kg/m3
dynamic viscosity of air = 2 × 10−5 kg/m‑sec.
Critical Reynolds number for transition of boundary layer from laminar to turbulent = 5 × 10
Local skin friction coefficient (Cfx)
Correct answer is 'Range: 0.765 to 0.77'. Can you explain this answer?
Verified Answer
Consider a two seater car that moves with a speed of 30 km/hr. Predic...
Consider the formation of boundary layer over the surface.
xc is the section with critical Re.
xc = 1 m ∴ xc < 1="" />
Hence initial 1 m of the surface is exposed to laminar boundary layer and trailing 2 m is exposed to turbulent boundary layer.
∴ By definition of Drag force (FD)
FD = 0.768 N
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Most Upvoted Answer
Consider a two seater car that moves with a speed of 30 km/hr. Predic...
Consider the formation of boundary layer over the surface.
xc is the section with critical Re.
xc = 1 m ∴ xc < 1="" />
Hence initial 1 m of the surface is exposed to laminar boundary layer and trailing 2 m is exposed to turbulent boundary layer.
∴ By definition of Drag force (FD)
FD = 0.768 N
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Consider a two seater car that moves with a speed of 30 km/hr. Predict the drag force on the car treating it as a flat surface of 3.0 × 2.0 given, density of air (δ) = 1.2 kg/m3dynamic viscosity of air = 2 × 10−5 kg/m‑sec.Critical Reynolds number for transition of boundary layer from laminar to turbulent = 5 × 10Local skin friction coefficient (Cfx)Correct answer is 'Range: 0.765 to 0.77'. Can you explain this answer?
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Consider a two seater car that moves with a speed of 30 km/hr. Predict the drag force on the car treating it as a flat surface of 3.0 × 2.0 given, density of air (δ) = 1.2 kg/m3dynamic viscosity of air = 2 × 10−5 kg/m‑sec.Critical Reynolds number for transition of boundary layer from laminar to turbulent = 5 × 10Local skin friction coefficient (Cfx)Correct answer is 'Range: 0.765 to 0.77'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Consider a two seater car that moves with a speed of 30 km/hr. Predict the drag force on the car treating it as a flat surface of 3.0 × 2.0 given, density of air (δ) = 1.2 kg/m3dynamic viscosity of air = 2 × 10−5 kg/m‑sec.Critical Reynolds number for transition of boundary layer from laminar to turbulent = 5 × 10Local skin friction coefficient (Cfx)Correct answer is 'Range: 0.765 to 0.77'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a two seater car that moves with a speed of 30 km/hr. Predict the drag force on the car treating it as a flat surface of 3.0 × 2.0 given, density of air (δ) = 1.2 kg/m3dynamic viscosity of air = 2 × 10−5 kg/m‑sec.Critical Reynolds number for transition of boundary layer from laminar to turbulent = 5 × 10Local skin friction coefficient (Cfx)Correct answer is 'Range: 0.765 to 0.77'. Can you explain this answer?.
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