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- Title
Tarımda kullanılan büyük çaplı tavan tipi vantilatörde hava akışının hesaplamalı akışkanlar dinamiği ile incelenmesi.
- Authors
DEMİR, Vedat; GÜNHAN, Tuncay; BİLGEN, Hamdi
- Abstract
Objective: The objective of this study was to determine the air movements of the ceiling fan with two different rotation circle diameter by using Computational Fluid Dynamics (CFD) method and select the most suitable turbulence model. Material and Methods: In the first stage, the air velocity changes in the axial direction of ceiling fans at certain distances from the fan center were measured. For this purpose, two different heights (1.0 and 1.5 m) from the ground were taken into account. In the second step, the values calculated by the computational fluid dynamics analysis method using different turbulence models were compared with the measurements. Results: The results were evaluated statistically. The lowest MAE and NRMSD values were found by using the Spalart Allmaras and SST k-ω models for fan with a 4 m rotation circle diameter, and the SST k-ω model for fan with a 5 m rotation circle diameter. Based on the graphical comparisons, it can be stated that the SST k-ω model made slightly better estimations than the other models. Conclusion: The solution approaches of the CFD simulation models were found to be close to each other. The appropriate selection of the turbulence model and considering the well-designed mesh structure, it has been shown that estimates that are very close to experimental data can be obtained by CFD simulation at certain heights above the ground.
- Subjects
COMPUTATIONAL fluid dynamics; CEILING fans; TURBULENCE; ROTATIONAL motion; SIMULATION methods &; models; VELOCITY
- Publication
Ege Üniversitesi Ziraat Fakültesi Dergisi, 2022, Vol 59, Issue 1, p147
- ISSN
1018-8851
- Publication type
Article
- DOI
10.20289/zfdergi.943702