Research article of American Journal of Scientific Research and Essays
Numerical simulation of propeller jet field based on Star-ccm+
College of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.
During the ship’s voyage, the propeller jet affects the movement of silt at the bottom of the bed. To research the influence of the bottom boundary on the propeller jet field, this paper takes the standard propeller DTRC4119 propeller as the research object and uses the CFD software Star-ccm+ to carry out a numerical simulation of the propeller jet under uniform flow. The flow velocity distribution of the jet under four operating conditions is mainly analyzed, including the axial velocity, tangential velocity and radial velocity of the jet. The results show that the distance between the propeller and the boundary does not affect the magnitude and distribution of the velocity on the initial plane but affects the shape of the axial velocity and the velocity on the central axis in the development zone; The closer to the bottom boundary, the greater the disturbance of tangential velocity and radial velocity, the peak value of tangential velocity will be affected and changed from central symmetry of velocity to unanimous trend earlier. The radial velocity contributes less to the overall velocity and can be ignored.
Keywords: Propeller; Jet field; CFD
How to cite this article:
Peng-rong Li. Numerical simulation of propeller jet field based on Star-ccm+. American Journal of Scientific Research and Essays, 2020, 5:25. DOI:10.28933/ajsre-2019-09-1405
1. Zheng Tian-li. Harm and engineering measures of marine propellers and boosters on port hydraulic structures [J]. Water Transport Engineering, 2001 (7): 29-32.
2. ALBERTSON M L , DAI Y B , JENSEN R A , et al . Diffusion of submerged jets[J]. J Transcript of the ASCE, 1993, 115(1):639-664.
3. Whitehouse R. scour at marine structures: a manual for practical applications. Thomas Ted-ford publisher, 1998.
4. Sumer B M , Freese J . The Mechanics of Scour in the Marine Environment[J]. 2002.
5. Stewart, James D P . Characteristics of a ship’s screw wash and the influence of quay wall proximity.[J]. Queens University of Belfast, 1992.
6. Hamill G A , Johnston H T . The decay of maximum velocity within the initial stages of a propeller wash[J]. Journal of Hydraulic Research, 1993, 31(5):605-613.
7. HASHMI H N . Erosion of a granular bed at a quay wall by a ship’ s screw wash[D] Northern Ireland: Queen’ s University of Belfast ,1993.
8. Lam W , Hamill G A , Song Y C , et al. A review of the equations used to predict the velocity distribution within a ship’s propeller jet[J]. Ocean Engineering, 2011, 38(1):1-10.
9. Lam W H , Hamill G , Robinson D , et al. Analysis of the 3D zone of flow establishment from a ship’s propeller[J]. Ksce Journal of Civil Engineering, 2012, 16(4):465-477.
10. Lam W H , Robinson D J , Hamill G A , et al. An effective method for comparing the turbulence intensity from LDA measurements and CFD predictions within a ship propeller jet[J]. Ocean Engineering, 2012, 52(none).
11. Kong Jinping, Wu Bo-tao, Kong Ling-zhi. Analysis of hydrodynamic performance of ship’s twin propellers based on CFD [J]. Ship Science and Technology, 2019 (5).