Mathematical Modeling of Air Pressure in a Drainage Stack of a High-Rise Building Test Platform
Publication: Journal of Architectural Engineering
Volume 20, Issue 1
Abstract
The air pressure in a drainage stack of a high-rise building test platform (HBTP) is mathematically modeled by unsteady one-dimensional () partial differential equations, in which an additional term is introduced to reflect the gas-liquid interphase interaction, the stack top-base effect. This model is crucial for understanding the characteristics of air pressure variation, which is significant for the recognition of the HBTP’s operational performance. A time-splitting based characteristic line method is used to solve the type governing equations, with the model parameters being calibrated by the measured data obtained on the HBTP. It is concluded that the generally used Saint-Venant equations should be extended appropriately so that the stack air pressure can be satisfactorily predicted.
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Acknowledgments
The work is financially supported from Natural Science Foundation of China (Grant No.10972212) and partially supported from the Building Services Engineering Unit and the Automation Unit of Industrial Center in PolyU of Hong Kong. The authors thank Senior Engineer Mrs. L. Zhang in the China National Engineering Research Center for Human Settlements for some useful private communications and the anonymous referees for helpful suggestions.
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Published In
Journal of Architectural Engineering
Volume 20 • Issue 1 • March 2014
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Dec 9, 2011
Accepted: Jan 22, 2013
Published online: Jan 24, 2013
Published in print: Mar 1, 2014
Discussion open until: Apr 29, 2014
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