Study of flow pattern on a hydrofoil with structural and profile modification

• Autorzy: Chada Jithendra Sai Raja , Rao B. S. V. Rama

Identyfikatory

DOI

10.30464/jmee.2022.6.1.27

• Języki publikacji: EN

Abstrakty

EN

Moving through water takes much more effort than walking through air, and this explains why ships travel much more slowly than automobiles and aircraft. Water is almost 1000 times denser than air, so most of the energy produced by a boat is taken up by dragging (water resistance). Hydrofoils travel much more quickly than ordinary boats, not by pushing through water but by raising the hull (the main body) of the boat upward so it can glide above the waves. Hydrofoil is one of the typical factors that affect the vortex structure and flow characteristics of hydraulic machinery. In order to enhance the utilisation efficiency of hydraulic machinery in marine energy, parallel grooves are proposed and applied to the hydrofoil. Following that, a numerical analysis is performed using the SST k- turbulence model, and the effects of the hydrofoil profile, the angle of attack and the flow are investigated. The profiles of NACA 0066, NACA 8412, NACA M2 and RAE 104 are considered for the study. The performance is analysed based on the lift to drag ratio. The best model from this is given with surface modification and the flow study is carried out at different angles of attack. The modified profile of NACA 8412 with parallel groves has shown the highest lift to drag ratio at a 12 degree angle of attack.

Słowa kluczowe

EN

hydrofoil; groves; angle of attack; CFD; computational fluid dynamics; fine mesh; validation

PL

wodolot; kąt natarcia; CFD; obliczeniowa mechanika płynów; walidacja

• Wydawca: Wydawnictwo Uczelniane Politechniki Koszalińskiej
• Czasopismo: Journal of Mechanical and Energy Engineering
• Rocznik: 2022
• Tom: Vol. 6, No 1
• Strony: 27--31
• Opis fizyczny: Bibliogr 10 poz., rys., tab., wykr.

Twórcy

autor

Chada Jithendra Sai Raja

• NS Engineering Company Pvt Ltd, Bachupally, Telangana, India

autor

Rao B. S. V. Rama

• Department of Mechanical Engineering, Pragati Engineering College, India

Bibliografia

• 1. Chen, Y.; Zhang, W.; Fang, D.; Sun, M.; Liu, J.; Song, D.; Zhang, X. Vortex Suppression and Flow Pattern Analysis of a Hydrofoil with Parallel Grooves. Processes 2021, 9, 816.
• 2. Chada, J. S. R., Satyanarayana, K. V. V., Kumar, G. V., Shaheen, M., and Bhaskar, A. P. (2020). Flow Variation on NACA 6412 Aerofoil with Surface Modifications. i-manager's Journal on Mechanical Engineering, 10(3), 31-37.
• 3. Manda Akhil Yuvaraj, Chada Jithendra Sai Raja, Surapaneni Sambhu Prasad, Geeri Satish Flow behaviour on aerofoils using CFD. Journal of Mechanical Engineering, Automation and Control Systems, Vol. 1, Issue 1, 2020, p. 26-36.
• 4. S. Geeri, S. P. Surapaneni, J. S. R. Chada, and A. Y. Manda, “Studies Based on CFD Behaviour of Aerofoil and Regression Analysis”, Engineering Science & Technology, vol. 3, no. 1, pp. 55-68, Oct. 2021.
• 5. Hatem KANFOUDI, Ridha ZGOLLI, Simulation of unsteady cavitating flow aound an hydrofoil, The fifth International Renewable Energy Congress IREC 2014.
• 6. Greeshma P Rao , Likith K, Mohammed Naveed Akram,Adarsh Hiriyannaiah, Numerical Analysis of Cavitating Flow over A2d Symmetrical Hydrofoil, International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 5.
• 7. L G Sun et al, Numerical investigation into cavitating flow around a NACA66 hydrofoil with DCM models, IOP Conf. Ser.: Earth Environ. Sci.2019.
• 8. Hao, J., Zhang, M. & Huang, X. Experimental Study on Influences of Surface Materials on Cavitation Flow Around Hydrofoils. Chin. J. Mech. Eng. 32, 45 (2019).
• 9. Y.LEMINI MALATHI , B.GEETA CHANDRA SEKHAR, Design and Optimization of Hydrofoil using CFD and Structural Analysis, International Journal of Scientific Engineering and Technology Research Volume. 05, Issue No. 44.
• 10. Byrne G, Persoons T, Kingston W. Experimental validation of lift and drag forces on an asymmetrical hydrofoil for seafloor anchoring applications. Journal of Ocean and Climate. January 2019.

Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).