Dynamic Response of Ductwork Laboratory Exhaust Systems

A numerical model based on the method of characteristics is developed to analyze unsteady flows in laboratory ductwork systems. Damper opening and/or closing initiate time-variable boundary conditions at hood inlets. Minor losses and ductwork friction are included, as well as interaction with fans....

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Bibliographic Details
Published in:HVAC&R research 2004-10, Vol.10 (4), p.505-520
Main Authors: Wiggert, David C., Martin, C. Samuel
Format: Article
Language:English
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Summary:A numerical model based on the method of characteristics is developed to analyze unsteady flows in laboratory ductwork systems. Damper opening and/or closing initiate time-variable boundary conditions at hood inlets. Minor losses and ductwork friction are included, as well as interaction with fans. Extensive data are obtained from two university laboratory systems for purposes of code verification. Comparisons between experiments and simulations demonstrate the accuracy and versatility of the numerical model.
ISSN:1078-9669
2374-4731
1938-5587
2374-474X
DOI:10.1080/10789669.2004.10391117