2024-03-29T14:20:16Zhttps://uvadoc.uva.es/oai/requestoai:uvadoc.uva.es:10324/330662021-06-24T07:41:43Zcom_10324_33219com_10324_954com_10324_894com_10324_1170com_10324_931com_10324_966com_10324_952col_10324_33220col_10324_1367col_10324_967
Experimental and numerical study of the influence of the plenum box on the airflow pattern generated by a swirl air diffuser
Villafruela Espina, José Manuel
Sierra Pallarés, José Benito
Castro Ruiz, Francisco
Álvaro Tordesillas, Antonio
Santiago Casado, Pablo de
Thermal comfort
Ventilation
stratum ventilation
When CFD is employed to design a ventilation system, one of the most delicate aspects is the modeling of the diffuser. The designer has different choices, which range from simulating the detailed geometry of the diffuser, including the plenum box, to use special boundary conditions to reproduce the velocity profile in each slot of the diffuser. This study is carried out to examine the influence of the plenum box on the turbulent airflow pattern generated by a swirl air diffuser from the experimental and numerical points of view. First, we perform experiments to evaluate such influence. Then, these experiments are contrasted with two numerical approximations to the problem using the Fluent 6.3.26 commercial CFD software. We first perform a simulation of the complete diffuser geometry – including the plenum box – and later a simplified simulation of the diffuser, where the whole geometry is simplified to a plane in which the velocity components and the slots positioning are specified via a particular boundary condition. The main findings of this study reveal that the simplified simulation is good enough at close range, while in the remote flow field the differences between both approaches practically disappear. © 2018 Elsevier Inc.
2018-11-29T12:00:49Z
2018-11-29T12:00:49Z
2018
info:eu-repo/semantics/article
Experimental Thermal and Fluid Science Volume 99, 2018, Pages 547-557
08941777
http://uvadoc.uva.es/handle/10324/33066
10.1016/j.expthermflusci.2018.08.021
547
557
Experimental Thermal and Fluid Science
99
eng
https://www.sciencedirect.com/science/article/pii/S0894177718309014?via%3Dihub
info:eu-repo/semantics/restrictedAccess
Elsevier Ltd
Elsevier
SI