Dimensional analysis shows that for wind alone, the nondimensional ventilation rate for a given building (Co) with a given wind direction is a function only of Reynolds number i.e. e Co= Where AUS(Re) Q is the ventilation rate, m³/s A is the area of the openings, m² U is the reference wind speed, m/s The Reynolds number is denoted by Re and is based on U. 1) Explain why it is impossible to satisfy exactly the requirements for flow similarity when testing a small scale model of a large building in a wind tunnel. II) In practice, it is possible to determine full-scale force coefficients from wind tunnel tests. Briefly explain the two reasons for this.

Dimensional analysis shows that for wind alone, the nondimensional ventilation rate for a given building (Co) with a given wind direction is a function only of Reynolds number i.e. e Co= Where AUS(Re) Q is the ventilation rate, m³/s A is the area of the openings, m² U is the reference wind speed, m/s The Reynolds number is denoted by Re and is based on U. 1) Explain why it is impossible to satisfy exactly the requirements for flow similarity when testing a small scale model of a large building in a wind tunnel. II) In practice, it is possible to determine full-scale force coefficients from wind tunnel tests. Briefly explain the two reasons for this.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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