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A platform for research: civil engineering, architecture and urbanism
CFD Technology for Use in Optimizing Fittings for Ductwork
https://orcid.org/http://orcid.org/0000-0003-1566-5278
https://orcid.org/http://orcid.org/0000-0002-6279-5705
https://orcid.org/http://orcid.org/0000-0003-1146-7362
Subject. Designing duct networks requires aerodynamic calculation. An accurate calculation of pressure losses in ducts is complicated by the lack of reliable information on the local resistance coefficients, if they differing from standard constructions. There is a need to use operational methods for assessing the aerodynamic characteristics of non-standard fittings. Methods. The search for a solution is carried out using mathematical modeling using the solution of the Reynolds-averaged Navier-Stokes equations (RANS). Problem solving is carried out using three models: k-ε, k-ω, SST-model. Results. The pressure distribution zones of the circular duct are determined. The dependences of the pressure change on the speed of the air flow are obtained. The efficiency of using various turbulence models is estimated. A quantitative assessment of the resistance to the movement of the air flow is carried out for various model details. Conclusion. The analysis of the results showed that for modeling local resistances of fittings of air ducts, more adequate results can be obtained using the SST-model and the k-ω model. The accuracy of the calculation increases with the increase in the detail of the model, but the calculation time also increases.
CFD Technology for Use in Optimizing Fittings for Ductwork
https://orcid.org/http://orcid.org/0000-0003-1566-5278
https://orcid.org/http://orcid.org/0000-0002-6279-5705
https://orcid.org/http://orcid.org/0000-0003-1146-7362
Subject. Designing duct networks requires aerodynamic calculation. An accurate calculation of pressure losses in ducts is complicated by the lack of reliable information on the local resistance coefficients, if they differing from standard constructions. There is a need to use operational methods for assessing the aerodynamic characteristics of non-standard fittings. Methods. The search for a solution is carried out using mathematical modeling using the solution of the Reynolds-averaged Navier-Stokes equations (RANS). Problem solving is carried out using three models: k-ε, k-ω, SST-model. Results. The pressure distribution zones of the circular duct are determined. The dependences of the pressure change on the speed of the air flow are obtained. The efficiency of using various turbulence models is estimated. A quantitative assessment of the resistance to the movement of the air flow is carried out for various model details. Conclusion. The analysis of the results showed that for modeling local resistances of fittings of air ducts, more adequate results can be obtained using the SST-model and the k-ω model. The accuracy of the calculation increases with the increase in the detail of the model, but the calculation time also increases.
CFD Technology for Use in Optimizing Fittings for Ductwork
https://orcid.org/http://orcid.org/0000-0003-1566-5278
https://orcid.org/http://orcid.org/0000-0002-6279-5705
https://orcid.org/http://orcid.org/0000-0003-1146-7362
Subject. Designing duct networks requires aerodynamic calculation. An accurate calculation of pressure losses in ducts is complicated by the lack of reliable information on the local resistance coefficients, if they differing from standard constructions. There is a need to use operational methods for assessing the aerodynamic characteristics of non-standard fittings. Methods. The search for a solution is carried out using mathematical modeling using the solution of the Reynolds-averaged Navier-Stokes equations (RANS). Problem solving is carried out using three models: k-ε, k-ω, SST-model. Results. The pressure distribution zones of the circular duct are determined. The dependences of the pressure change on the speed of the air flow are obtained. The efficiency of using various turbulence models is estimated. A quantitative assessment of the resistance to the movement of the air flow is carried out for various model details. Conclusion. The analysis of the results showed that for modeling local resistances of fittings of air ducts, more adequate results can be obtained using the SST-model and the k-ω model. The accuracy of the calculation increases with the increase in the detail of the model, but the calculation time also increases.
CFD Technology for Use in Optimizing Fittings for Ductwork
Lecture Notes in Civil Engineering
Mottaeva, Angela (editor) / Rudenko, Nikolay (author) / Babushkin, Yaroslav (author) / Fursova, Irina (author)
International Scientific Conference on Architecture and Construction ; 2020
2020-12-24
8 pages
Article/Chapter (Book)
Electronic Resource
English
CFD Technology for Use in Optimizing Fittings for Ductwork
| TIBKAT | 2021
Fan connected ductwork fittings - an installation effects study
| British Library Conference Proceedings | 1993
| Tema Archive | 1985
| British Library Online Contents | 1997