SavedAdd your journal

Journals / Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2026 / Cilt: 28 Sayı: 1

Numerical investigation of propeller flow field using mrf model

Pervane akım alanının mrf modeli ile sayısal analizi

Abdelrahman Mahir(ADNAN MENDERES UNIVERSITY)0009-0005-1796-2681
Ayse Yuksel Ozan(AYDIN ADNAN MENDERES ÜNİVERSİTESİ, MÜHENDİSLİK FAKÜLTESİ)0000-0003-1931-3528
Pages
435–448
Publication Date
2026-01-14
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The findings indicated that both models effectively simulated the overall jet structure and shear footprint, yet they exhibited differences in detail: the k-ε model estimated a higher shear stress value of ~0,11 Pa with a broader scour pattern, whereas the SST model maintained a narrower jet core and a more concentrated vortex with shear stress maxima of ~0,078 Pa.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:This research employs computational fluid dynamics to examine the velocity field and bed shear stress produced by a propeller jet.
📊
Key Findings & Data:A steady-state MRF approach was utilized to approximate the propeller’s swirling. 10 inflation layers were applied at both the propeller and the seabed to better enhance the resolution of the near-wall gradients.
💡
Conclusion & Impact:The findings indicated that both models effectively simulated the overall jet structure and shear footprint, yet they exhibited differences in detail: the k-ε model estimated a higher shear stress value of ~0,11 Pa with a broader scour pattern, whereas the SST model maintained a narrower jet core and a more concentrated vortex with shear stress maxima of ~0,078 Pa.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Pervane jeti · Taban kayma gerilmesi · HAD

Abstract

This research employs computational fluid dynamics to examine the velocity field and bed shear stress produced by a propeller jet. A steady-state MRF approach was utilized to approximate the propeller’s swirling. 10 inflation layers were applied at both the propeller and the seabed to better enhance the resolution of the near-wall gradients. Model sensitivity to turbulence-model selection was evaluated by testing the SST and the realizable k-ε models. The findings indicated that both models effectively simulated the overall jet structure and shear footprint, yet they exhibited differences in detail: the k-ε model estimated a higher shear stress value of ~0,11 Pa with a broader scour pattern, whereas the SST model maintained a narrower jet core and a more concentrated vortex with shear stress maxima of ~0,078 Pa. The results indicate the importance of selecting appropriate mesh configurations and turbulence models for accurately predicting propeller jet scours.

Özet

Bu araştırma, hesaplamalı akışkanlar dinamiğini kullanarak pervane jeti ile oluşan hız alanı ve taban kayma gerilimesini incelemektedir. Pervanenin çevri hareketini yaklaşık olarak hesaplamak için kararlı akım koşullarında MRF yaklaşımı kullanılmıştır. Taban yakınındaki sınır tabakası çözünürlüğünü daha iyi elde edebilmek için hem pervaneye hem de tabana 10 kademeli çözüm ağı uygulanmıştır. Türbülans modelinin duyarlılığı, SST ve gerçekleştirilebilir k-ε modellerini test ederek değerlendirilmiştir. Bulgular, her iki modelin de genel jet yapısını ve taban kayma gerilmesi izini etkili bir şekilde benzeştirdiğini, ancak ayrıntılarda farklılıklar gösterdiğini ortaya koymuştur: k-ε modeli, daha geniş bir oyulma modeliyle ~0,11 Pa'lık daha yüksek bir kayma gerilimi değeri elde ederken, SST modeli daha dar bir jet çekirdek alanı ile daha yoğun bir çevri bölgesi ve ~0,078 Pa'lık maksimum kayma gerilimi belirlemiştir. Sonuçlar pervane jeti kaynaklı oyulmalarını doğru bir şekilde belirlemek için uygun ağ konfigürasyonları ve türbülans modellerinin seçilmesinin önemini göstermektedir.

🔖

Cite This Article

Mahir, A., Ozan, A. Y. (2026). Numerical investigation of propeller flow field using mrf model. Balıkesir Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 28 Sayı: 1, 435–448. https://doi.org/10.25092/baunfbed.1823759

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (18)

  1. Sumer, B. M., and Fredsøe, J. (2002). The mechanics of Scour in the marine environment. In Advanced series on ocean engineering. https://doi.org/10.1142/4942
  2. Transportation, U. S. D. O. (2015). Bridge scour and stream instability countermeasures: Experience, Selection, and Design Guidance Third Edition Volume 1.
  3. Hong, J., Chiew, Y., and Cheng, N. (2013). Scour caused by a propeller jet. Journal of Hydraulic Engineering, 139(9), 1003–1012. https://doi.org/10.1061/(asce)hy.1943-7900.0000746
  4. Wei, M., Chiew, Y., and Hsieh, S. (2017). Plane boundary effects on characteristics of propeller jets. Experiments in Fluids, 58(10). https://doi.org/10.1007/s00348-017-2425-8
  5. Tan, R. İ., and Yüksel, Y. (2018). Seabed scour induced by a propeller jet. Ocean Engineering, 160, 132–142. https://doi.org/10.1016/j.oceaneng.2018.04.076
  6. Cihan, K., Doğu, A., Yılmaz, D., Ozan, A. Y., Yıldız, O., and Sahin, C. (2022). Unconfined propeller jet scour on clay/sand mixtures. Ocean Engineering, 264, 112448. https://doi.org/10.1016/j.oceaneng.2022.112448
  7. Curulli, G., Penna, N., and Gaudio, R. (2022). Improved formulation for the geometric characteristics of the scour hole and deposition mound caused by a rotating propeller jet on a mobile bed. Ocean Engineering, 267, 113175. https://doi.org/10.1016/j.oceaneng.2022.113175
  8. Penna, N., D’Alessandro, F., Gaudio, R., and Tomasicchio, G. R. (2019). Three-dimensional analysis of local scouring induced by a rotating ship propeller. Ocean Engineering, 188, 106294. https://doi.org/10.1016/j.oceaneng.2019.106294
  9. Fluent Inc. (2003). Fluent User Manual.
  10. W. Lam, G. A. Hamill, D. J. Robinson, and S. Raghunathan, “Semi-empirical methods for determining the efflux velocity from a ship’s propeller,” Applied Ocean Research, vol. 35, pp. 14–24, Feb. 2012, doi: 10.1016/j.apor.2012.01.002.
  11. PIANC. (2015). Guidelines for Protecting Berthing Structures from Scour Caused by Ships.
  12. M. Fuehrer and K. Römisch, “Effects of modern ship traffic on islands and ocean waterways and their structures,” in Proc. PIANC 24th Congress, Leningrad, USSR, Sep. 1977, Sections 1–3.
  13. G. Hamill, C. Kee, and D. Ryan, “Three-dimension efflux velocity characteristics of marine propeller jets,” Proceedings of the Institution of Civil Engineers - Maritime Engineering, vol. 168, no. 2, pp. 62–75, Jun. 2015, doi: 10.1680/jmaen.14.00019.
  14. Hamill, G. A. (1987). Characteristics of the screw wash of manoeuvring ship and the resulting bed scour (Ph.D. thesis). Queen’s University of Belfast, Northern Ireland, UK.
  15. Stewart, D. P. J. (1992). Characteristics of a ship’s screw wash and the influence of quay wall proximity (Ph.D. thesis). Queen’s University of Belfast, Northern Ireland, UK.
  16. Tan, R. İ., and Yüksel, Y. (2018). Seabed scour induced by a propeller jet. Ocean Engineering, 160, 132–142. doi:10.1016/j.oceaneng.2018.04.076.
  17. Wei, M., Y.-M. Chiew, and N.-S. Cheng. (2020). Recent advances in understanding propeller jet flow and its impact on scour. Physics of Fluids, 32(10). doi: 10.1063/5.0023266.
  18. Lam, W., Robinson, D., Hamill, G., and Johnston, H. (2012). An effective method for comparing turbulence intensity from LDA measurements and CFD predictions within a ship propeller jet. Ocean Engineering, 52, 105–124. https://doi.org/10.1016/j.oceaneng.2012.06.016