"A maximum 10-minute mean wind of 124 km/h was registered at North Point anemometer located inside the Victoria Harbour." [Super Typhoon Mangkhut (1822), Tropical Cyclone Reports and Publications, Hong Kong Observatory, 2018] Consider wind flow past a yellow beacon, as shown in Figure Q4(A) when Super Typhoon Mangkhut attacked Hong Kong in 2018. (a) Find the Reynolds numbers at the sphere and at the pole, i.e. Res, Rep. Is the flow turbulent or laminar? (b) From Figure Q4(B), find C, for the sphere and the pole. Calculate the total drag force acting on the yellow beacon. (c) What is the moment at the base of the yellow beacon? (d) State the assumptions. (e) From your understanding of form drag and drag coefficient of various geometry, explain why horse riders lean forward as much as they can when they are racing.

"A maximum 10-minute mean wind of 124 km/h was registered at North Point anemometer located inside the Victoria Harbour." [Super Typhoon Mangkhut (1822), Tropical Cyclone Reports and Publications, Hong Kong Observatory, 2018] Consider wind flow past a yellow beacon, as shown in Figure Q4(A) when Super Typhoon Mangkhut attacked Hong Kong in 2018. (a) Find the Reynolds numbers at the sphere and at the pole, i.e. Res, Rep. Is the flow turbulent or laminar? (b) From Figure Q4(B), find C, for the sphere and the pole. Calculate the total drag force acting on the yellow beacon. (c) What is the moment at the base of the yellow beacon? (d) State the assumptions. (e) From your understanding of form drag and drag coefficient of various geometry, explain why horse riders lean forward as much as they can when they are racing.

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 5.3P: Evaluate the Nusselt number for flow over a sphere for the following conditions: D=0.15m,k=0.2W/mK,...

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