Benchmark study of 2D and 3D VOF simulations of a simplex nozzle using a hybrid RANS-LES approach

Name: Benchmark study of 2D and 3D VOF simulations of a simplex nozzle using a hybrid RANS-LES approach
Author: Bal, M., Kayansalçik, Gökhan, Ertunç, Özgür, Erhan Böke, Y.

İsim	Benchmark study of 2D and 3D VOF simulations of a simplex nozzle using a hybrid RANS-LES approach
Yazar	Bal, M., Kayansalçik, Gökhan, Ertunç, Özgür, Erhan Böke, Y.
Basım Tarihi:	2022-07-01
Basım Yeri	- Elsevier
Konu	Atomizer, CFD, Nozzle, Pressure, Simplex, Swirl
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0016-2361
Kayıt Numarası	210ae4f2-0fdf-40f4-bd9a-dc3d3315bac4
Lokasyon	Mechanical Engineering
Tarih	2022-07-01
Notlar	Tusas Engine Industries ; TÜBİTAK ; Istanbul Teknik Üniversitesi
Örnek Metin	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

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Benchmark study of 2D and 3D VOF simulations of a simplex nozzle using a hybrid RANS-LES approach

Yazar Bal, M., Kayansalçik, Gökhan, Ertunç, Özgür, Erhan Böke, Y.

Basım Tarihi 2022-07-01

Basım Yeri - Elsevier

Konu Atomizer, CFD, Nozzle, Pressure, Simplex, Swirl

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0016-2361

Kayıt Numarası 210ae4f2-0fdf-40f4-bd9a-dc3d3315bac4

Lokasyon Mechanical Engineering

Tarih 2022-07-01

Notlar Tusas Engine Industries ; TÜBİTAK ; Istanbul Teknik Üniversitesi

Örnek Metin 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