Numerical Simulation of Crashback Condition of a Propeller Based on OpenFOAM

doi:10.16183/j.cnki.jsjtu.2021.305

Abstract

Abstract:

The hydrodynamic characteristics of a propeller under the crashback condition are closely related to the crash stopping ability of a ship, which directly affect the ship navigational safety. In this paper, a numerical study on the hydrodynamic characteristics of a propeller and the flow field around the propeller under the crashback condition is conducted based on the Reynolds-averaged Navier-Stokes solver in the open source computational fluid dynamics platform OpenFOAM. Taking the 5-blade propeller DTMB4381 model as the study object, the ahead and crashback conditions are numerically simulated. The numerical results are compared with international open model test data to validate the effectiveness of the numerical method in the prediction of the hydrodynamic characteristics of the propeller under different conditions. Based on the obtained hydrodynamic loads and flow field details, the local flow field characteristics changing with the advance velocity and the relation between the local flow fields and the global hydrodynamic forces are explored, which provides theoretical basis for the evaluation of ship crash stopping ability.

Key words: propeller crashback, hydrodynamic characteristics, computational fluid dynamics (CFD), OpenFOAM, Reynolds-averaged Navier-Stokes (RANS) method

CLC Number:

U661.33

GUO Haipeng, ZOU Zaojian, LI Guangnian. Numerical Simulation of Crashback Condition of a Propeller Based on OpenFOAM[J]. Journal of Shanghai Jiao Tong University, 2023, 57(2): 168-176.

Figures/Tables 12

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工况	J	U_A/(m·s^-1)	n/(r·min^-1)
正车前进	0.1	0.305	600
	0.3	0.915	600
	0.5	1.525	600
	0.7	2.135	600
	0.9	2.745	600
	1.1	3.355	600
紧急倒车	-0.5	1.525	-600
	-0.7	2.135	-600
	-0.9	2.745	-600

参数	S₁	S₂	S₃	R_G	Convergence	U_G%S₁
K_T	-0.4654	-0.4638	-0.4688	-0.3165	Oscillatory	0.5372
K_Q	-0.9305	-0.9246	-0.9392	-0.4014	Oscillatory	0.7845