Author
Bal, M., Kayansalçik, Gökhan, Ertunç, Özgür, Erhan Böke, Y.
Publication Date
2022-07-01
Publication Place
-
Elsevier
Subject
Atomizer, CFD, Nozzle, Pressure, Simplex, Swirl
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
0016-2361
Record ID
210ae4f2-0fdf-40f4-bd9a-dc3d3315bac4
Library Location
Mechanical Engineering
Date
2022-07-01
Notes
Tusas Engine Industries ; TÜBİTAK ; Istanbul Teknik Üniversitesi
Sample Text
In this study, a simplex nozzle is tested with water for the benchmarking of different flow simulation models. A large scale Plexi-glass transparent nozzle is used to reduce the influence of production tolerances on the performance. Experiments are conducted at different flow rates and CD, spray angle and film thickness parameters are evaluated. 2D and 3D hybrid RANS-LES multiphase flow simulations of simplex nozzle are validated against the experimental data. Multiphase nature of the flow is modelled by volume of fluid method. The main goal is to assess the capabilities and drawbacks of 2D axisymmetric and full sector 3D modeling approaches. It is observed that although full sector 3D simulations require HPC cluster systems, accuracies in validation parameters are quite satisfying. Conversely, 2D axisymmetric simulations which can be run on a single core and give a general outlook of the flow field, they show an overshoot of CD and film thickness over the selected range of flow rate. It is shown that this overshoot is mostly related with the inlet boundary condition, which can not take the flow contraction and/or separation at the inlet slots into account. After correcting the inlet velocity 2D simulations by using the 3D results, it is shown that the predictions can be quite close to the experimental data.
DOI
10.1016/j.fuel.2022.123695
Cilt
319
