Grid-dependence study for simulating propeller crashback using large-eddy simulation with immersed boundary method

Liao, Fei; Yang, Xiaolei; Wang, Shizhao; He, Guowei

doi:10.1016/j.oceaneng.2020.108211

Cited by 18 publications

(3 citation statements)

References 35 publications

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“…Similarly, Angelidis et al [23] also used the CURVIB method to simulate the same type of MHK turbine. Liao et al [24] tested the CURVIB method to capture the flow characteristics of a propeller working in crashback model under different grid resolutions, the results showed that different grid resolutions had similar predictions of the far-wake, but there were relatively large differences in predicting the length of the near-wake recirculation zone and vortex structure.…”

Section: Of 19mentioning

confidence: 99%

A Computational Method for Complex-shaped Hydraulic Turbomachinery Flow Based on Immersed Boundary Method

Li¹,

Feng²,

Zheng³

et al. 2023

Preprint

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Traditional numerical techniques such as sliding mesh, dynamic grid mesh, and others, have many limitations in dealing with flow simulation with large-scale movement of solid boundaries; which is the case for complex-shaped hydraulic turbomachinery such as propellers, pumps and turbines. The immersed boundary (IB) method provides a new approach to solve the above limitations. Therefore, this study proposes an sharp-interface IB method based on the level-set function that is suitable for simulating the flow through turbomachinery with complex geometries. This method is applied to actual three-dimensional numerical simulations of high-Reynolds number propellers using an in-house computational fluid dynamics solver. The results show that the proposed method can provide comparatively accurate predictions of unsteady load coefficients within the propeller flow passage, and capture the correct propeller wake characteristics as well as the interaction between the propeller wake and free surface. This study aims at providing a theoretical basis and engineering reference for the application of the IB method in engineering numerical simulations.

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Section: Of 19mentioning

confidence: 99%

A Computational Method for Complex-shaped Hydraulic Turbomachinery Flow Based on Immersed Boundary Method

Li¹,

Feng²,

Zheng³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The curvilinear immersed boundary method is being implemented for the simulation of incompressible internal and external flows of Newtonian and non-Newtonian fluids in a variety of laminar and turbulent flow applications with either steady or moving boundaries [28][29][30][31][32]. Asgharzedeh and Borazjani, by introducing an analytical Jacobian for Newton-Krylov methods, simulate the Taylor-Green vortex, the horizontal oscillations of a cylinder initially at rest and flow in a 90 • bend [33].…”

Section: Introductionmentioning

confidence: 99%

Multivariate Peristalsis in a Straight Rectangular Duct for Carreau Fluids

Moulinos,

Manopoulos,

Tsangaris

2024

Computation

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Peristaltic flow in a straight rectangular duct is examined imposed by contraction pulses implemented by pairs of horizontal cylindrical segments with their axes perpendicular to the flow direction. The wave propagation speed is considered in such a range that triggers a laminar fluid motion. The setting is analyzed over a set of variables which includes the propagation speed, the relative occlusion, the modality of the squeezing pulse profile and the Carreau power index. The numerical solution of the equations of motion on Cartesian meshes is grounded in the immersed boundary method. An increase in the peristaltic pulse modality leads to the reduction in the shear rate levels on the central tube axis and to the movement of the peristaltic characteristics to higher pressure values. The effect of the no slip side walls (NSSWs) is elucidated by the collation with relevant results for the flow field produced under the same assumptions though with slip side walls (SSWs). Shear thinning behavior exhibits a significantly larger effect on transport efficiency for the NSSWs duct than on the SSWs duct.

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“…Mesh generation time can be reduced to seconds without the re-generating and transforming of the grids, greatly improving computational efficiency and stability. The numerical simulation of the propeller flow by IBM has proven to be feasible in a few studies [11][12][13][14], although there are still few relevant studies.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Wake Properties of a Propeller Using Immersed Boundary Method

Li,

Kan

2024

J. Phys.: Conf. Ser.

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A level-set based sharp-interface immersed boundary method (IBM) was applied with large eddy simulation to simulate the complex flow field around a marine propeller. The wake characteristics under the open-water conditions including velocity, pressure and turbulent kinetic energy were analyzed. Additionally, the comparative analysis of the axial Reynolds stress of the propeller operating beneath incident waves and that under the open-water condition indicates that the nonlinear interaction between waves and wake leads to the increase in Reynolds stress within the radial range of r/D=0.35 to r/D=0.55 in the far-wake region. The obtained numerical simulation results confirmed the feasibility of the IBM for the numerical simulation of complex flows through hydraulic machinery such as propellers.

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Grid-dependence study for simulating propeller crashback using large-eddy simulation with immersed boundary method

Cited by 18 publications

References 35 publications

A Computational Method for Complex-shaped Hydraulic Turbomachinery Flow Based on Immersed Boundary Method

A Computational Method for Complex-shaped Hydraulic Turbomachinery Flow Based on Immersed Boundary Method

Multivariate Peristalsis in a Straight Rectangular Duct for Carreau Fluids

Numerical Investigation of Wake Properties of a Propeller Using Immersed Boundary Method

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