A sphere 6.0 cm in diameter, D, is fixed in airflow (see Figure). The approach velocity, V, is 4.0 m/s and the kinematic viscosity of air, vf is 15 x 10-6 m2/s. Calculate the Reynolds number Estimate the drag coefficient, CD.

A sphere 6.0 cm in diameter, D, is fixed in airflow (see Figure). The approach velocity, V, is 4.0 m/s and the kinematic viscosity of air, vf is 15 x 10-6 m2/s. Calculate the Reynolds number Estimate the drag coefficient, CD.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.29P: Air at 20C flows at 1 m/s between two parallel flat plates spaced 5 cm apart. Estimate the distance...

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Question

A sphere 6.0 cm in diameter, D, is fixed in airflow (see Figure). The approach velocity, V, is 4.0 m/s and the kinematic viscosity of air, v_f is 15 x 10^-6 m²/s.

1. Calculate the Reynolds number
2. Estimate the drag coefficient, CD.

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