Write your message
Volume 13 - Winter and Spring 2020                   ijmt 2020, 13 - Winter and Spring 2020: 11-19 | Back to browse issues page

XML Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Yari E, Barati Moghaddam A. Inclination angle effect on ventilation pattern and trailing wake formation of the partially submerged propeller. ijmt 2020; 13 :11-19
URL: http://ijmt.ir/article-1-680-en.html
Inclination angle effect on ventilation pattern and trailing wake formation of the partially submerged propeller
Ehsan Yari * 1, Ali Barati Moghaddam1
1- Maleke Ashtar University of Technology
Abstract:   (4195 Views)
Partially submerged propellers function in two-phase condition, i.e. each propeller blade enters water once in each revolution so the thrust and torque of each blade hit maximum level and then become around zero. Surface-piercing propeller investigated in this work is a new geometry that the main purpose of its design has been to achieve higher hydrodynamic performance; minimizing energy loss by reducing of the volume fraction of the water adhered to the exiting blade from the water surface. In this article, Reynolds-Averaged Navier–Stokes computations based on finite volume method (FVM) was applied to investigate force excitation, ventilation pattern and wake formation of the partially submerged propeller under inclination angle. Two-phase flow field equations were solved using homogenous Eulerian multiphase model by sliding method. To solve two-phase flow field at the free surface accurately and deal with free surface effects in calculations, CFX free surface model based on volume of fluid (VOF) approach was used. The accuracy of the numerical method was verified using series of simulations on SPP-841B propeller with existing experimental measurements. Comparison between simulated and measured SPP-841B open characteristics as well as ventilation pattern of the key blade indicated a reasonable agreement with experimental data and observations. Based on obtained data, with an increase in shaft inclination angle, propeller thrust and torque coefficients increased, whereas the propeller efficiency was decreased.
Keywords: Partially submerged propeller, Ventilation pattern, Wake formation, Inclination angle
Full-Text [PDF 1091 kb]   (1898 Downloads)    
Type of Study: Research Paper | Subject: Ship Hydrodynamic
Received: 2019/10/5 | Accepted: 2020/02/9
References
1. N. Olofsson, (1996), Force and Flow Characteristics of a Partially Submerged Propeller, Department of Naval Architecture and Ocean Engineering, Chalmers University of Technology, (PhD Thesis).
2. K. Nozawa, N. Takayama, (2002), Hydrodynamic performance and exciting force of surface piercing propeller, Proceedings of the Asia Pacific Workshop on Marine Hydrodynamics (APHydro 2002), Kobe, Japan.
3. M. Ferrando, M. Viviani, S. Crotti, P. Cassella, S. Caldarella, (2006), Influence of Weber number on surface piercing propellers model tests scaling, Proceedings of the 7th International Conference on Hydrodynamics (ICHD2006), Ischia, Italy.
4. M. Ferrando, A. Scamardella, N. Bose, P. Liu, B. Veitch, (2002), Performance of family of surface piercing propellers, Transactions of the Royal Institution for Naval Architects, 144:63-75.
5. K. Nozawa, N. Takayama, (2002), Experimental study on propulsive performance of surface piercing propeller, J. Kansai Soc. Nav. Arch. 237: 63-70.
6. K. Himei, S. Yamasaki, M. Yamasaki, T. Kudo, (2005), A study of practical supercavitating propeller, the west- Japan society of naval architects. [DOI:10.2534/jjasnaoe1968.2004.196_73]
7. Y.L. Young, S.A. Kinnas, (2003), Analysis of supercavitating and surface-piercing propeller flows via BEM, Computational Mech. 32: 269-280. [DOI:10.1007/s00466-003-0484-6]
8. M. Caponnetto, (2003), RANSE Simulations of Surface Piercing Propellers, Proceedings of the 6th Numerical Towing Tank Symposium, Roma, Italy.
9. H. Ghassemi, (2009), Hydrodynamic characteristics of the surface-piercing propellers for the planing craft, J. Mar. Sci. Appl. 8: 267-274. [DOI:10.1007/s11804-009-8076-2]
10. K. Himei, (2013), Numerical Analysis of Unsteady Open Water Characteristics of Surface Piercing Propeller, Proceedings of the 3rd International Symposium on Marine Propulsors smp'13, Launceston, Tasmania, Australia.
11. E. Yari, H. Ghassemi, (2016), Numerical study of surface tension effect on the hydrodynamic modeling of the partially submerged propeller's blade section, J. Mech. 32: 653-664. [DOI:10.1017/jmech.2016.38]
12. E. Yari, H. Ghassemi, (2016), Numerical analysis of surface piercing propeller in unsteady conditions and cupped effect on ventilation pattern of blade cross-section, J. Mar. Sci. Technol. 21: 501-516. [DOI:10.1007/s00773-016-0372-3]
13. E. Yari, H. Ghassemi, (2016), Hydrodynamic analysis of the surface-piercing propeller in unsteady open water condition using boundary element method, Int. J. Nav. Archit. Ocean Eng. 8: 22-37. [DOI:10.1016/j.ijnaoe.2015.09.002]
14. E. Yari, H. Ghassemi, (2016), The unsteady hydrodynamic characteristics of a partial submerged propeller via a RANS solver, J.Mar. Eng. Technol.14: 111-123. [DOI:10.1080/20464177.2015.1117717]
15. E. Yari, (2017), Time Domain Analysis of the Ventilation around the Partial Immersed Propeller Using Sliding Mesh Method, Int. J.Mari. Technol. 7: 19-27. [DOI:10.18869/acadpub.ijmt.7.19]
16. S. Alimirzazadeh, S. Nardone, R. Zabihzade Roshan, M.S. Seif, (2016), Unsteady RANS simulation of a surface piercing propeller in oblique flow. Appl. Ocean Res. 56: 79-91. [DOI:10.1016/j.apor.2016.01.003]
17. D. Yang, Z. Ren, Z. Guo, Z. Gao, (2018), Numerical Analysis on the Hydrodynamic Performance of an Artificially Ventilated Surface-Piercing, Water. 10: 1499. https:// doi.org/ 10.3390/w10111499 [DOI:10.3390/w10111499]
18. D. C.Wilcox, (1998), Turbulence Modeling for CFD. DCW Industries, Inc. La Canada, California.
19. F. R. Menter, (2009), Review of the SST Turbulence Model Experience from an Industrial Perspective, International Journal of Computational Fluid Dynamics. Volume 23, Issue 4. [DOI:10.1080/10618560902773387]
Send email to the article author

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Creative Commons License
International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.