Engineering Mechanics

Proceedings Vol. 23 (2017)

ENGINEERING MECHANICS 2017

Copyright © 2017 Brno University of Technology, Faculty of Mechanical Engineering, Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno

 

Peszyński K., Perczyński D., Smyk E., Kolber P.
pages 770 - 773, full text

The paper presents experimental verification of theoretical models for the velocity distribution in circular, rectangular, and rounded rectangular cross-sectional ventilation ducts. This verification is based on the knowledge of circular and rectangular cross-section ducts’ properties and the new cross-section contains both aforementioned. These studies are aimed at finding ways of reducing the necessary measurements to determine the average flow rate in ventilation air ducts. Due to the size of the ducts it was decided to determine the flow rate based on the integration of flow velocity over the considered crosssection. This method requires knowledge of velocity distribution in the cross section. The approximation of measured actual profile by the basic and modified Prandtl power-law velocity profile was verified.

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