Validation of modified algebraic model during transitional flow in HVAC duct
Authors:
- Konrad Nering,
- Krzysztof Nering
Abstract
Airflow occurring in a ventilation duct is characterized by low velocity and hence low Reynolds number. In these conditions, either a laminar, transitional or turbulent flow will occur. Different flow conditions result in different values of the friction coefficient. To achieve the transitional flow in numerical simulation, a modified algebraic model for bypass transition (modified k−ω) was used. Numerical simulation was validated using Particle Tracking Velocimetry (PTV) in the circular channel. The modified algebraic model consists of only two partial differential equations, which leads to much faster calculation than the shear stress transport model. Results of the modified algebraic model are largely consistent with either the measurement and shear stress transport model considering laminar and transitional flow. Consistency slightly decreased in turbulent flow in relation to the model using shear stress transport method. The research connected with transitional flow analysis is in the field of fluid mechanics belonging to the scientific discipline of Mechanical Engineering.
- Record ID
- CUT344ad14942244c8c9912f13706b9f284
- Publication categories
- ;
- Author
- Journal series
- Energies, ISSN , e-ISSN 1996-1073, Biweekly
- Issue year
- 2021
- Vol
- 14
- No
- 13
- Pages
- [1-20]
- Article number
- 3975
- Other elements of collation
- Bibliografia (na s.) - 19-20; Bibliografia (liczba pozycji) - 38; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 14, Iss. 13, Spec. Iss.
- Substantive notes
- Special Issue: Computational Thermal, Energy, and Environmental Engineering
- Keywords in English
- steady-state transitional flow, OpenFOAM, numerical simulation, CFD, PTV, HVAC duct, fluid mechanics
- DOI
- DOI:10.3390/en14133975 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1073/14/13/3975 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT344ad14942244c8c9912f13706b9f284/
- URN
urn:pkr-prod:CUT344ad14942244c8c9912f13706b9f284
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.