Fluid-structure interaction for the flexible filament's propulsion hanging in the free stream

Afra, B.; Delouei, A. Amiri; Mostafavi, Mahmoud; Tarokh, Ali

doi:10.1016/j.molliq.2020.114941

Cited by 39 publications

(13 citation statements)

References 57 publications

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“…The interaction between the iris and the fluid is handled using the direct-forcing immersed boundary method (IBM) with diffuse interface scheme [34,[51][52][53][54][55]. By enforcing the no-slip and no-penetration boundary conditions on the iris, the IBM can be described as…”

Section: Discussionmentioning

confidence: 99%

Simulation of fluid-structure interaction during the phaco-emulsification stage of cataract surgery

Wang

Zhao

et al. 2022

International Journal of Mechanical Sciences

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Section: Discussionmentioning

confidence: 99%

Simulation of fluid-structure interaction during the phaco-emulsification stage of cataract surgery

Wang

Zhao

et al. 2022

International Journal of Mechanical Sciences

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“…The implementation of LBM is relatively simple, and its numerical cost is small. Currently, IB-LBM can be applied to many numerical simulations [ 26 , 27 , 28 , 29 , 30 , 31 ], and the theoretical improvement of IB-LBM has never stopped. Feng first presented the combination of the IBM and LBM to simulate the rigid particle–fluid interaction [ 32 ].…”

Section: Introductionmentioning

confidence: 99%

“…Afra, B. et al developed a robust lattice spring model (LSM) with the spring tension in multiple directions, which could be an implicit scheme of IB-LBM for large deformation issues; this is an effective model and obtains good results in deformation simulation [ 43 ]. Additionally, some fluid control problems of flexible filaments with good simulation results have been studied by LSM [ 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

Liu

Shi

2023

Entropy

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In order to obtain a better numerical simulation method for fluid–structure interaction (FSI), the IB-LBM combining the lattice Boltzmann method (LBM) and immersed boundary method (IBM) has been studied more than a decade. For this purpose, an explicit correction force scheme of IB-LBM was proposed in this paper. Different from the current IB-LBMs, this paper introduced the particle distribution function to the interpolation process from the fluid grids to the immersed boundary at the mesoscopic level and directly applied the LBM force models to obtain the interface force with a simple form and explicit process. Then, in order to ensure the mass conservation in the local area of the interface, this paper corrected the obtained interface force with the correction matrix, forming the total explicit-correction-force (ECP) scheme of IB-LBM. The results of four numerical tests were used to verify the order of accuracy and effectiveness of the present method. The streamline penetration is limited and the numerical simulation with certain application significance is successful for complex boundary conditions such as the movable rigid bodies (free oscillation of the flapping foil) and flexible deformable bodies (free deformation of cylinders). In summary, we obtained a simple and alternative simulation method that can achieve good simulation results for engineering reference models with complex boundary problems.

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“…According to Villa et al [23], the effects of the shaft configuration were non-negligible, while the shape of the boss cap had practically no effects on the computed forces. Amiri Delouei et al [24], Karimnejad et al [25], and Afra et al [26] applied the Immersed boundary method (IBM) for dealing with moving objects in fluids. The IBM has the behavior of good stability.…”

Section: Introductionmentioning

confidence: 99%

Discussion of the Fluid Acceleration Quality of a Ducted Propulsion System on the Propulsive Performance

Kao¹,

Liao²

2022

Computer Modeling in Engineering &Amp; Sciences

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This paper focuses on the ducted propulsion with the accelerating nozzle, and discusses the influence of its fluid acceleration quality on its propulsive performances, including the hull efficiency, the relative rotative efficiency, the effective wake, and the thrust deduction factor. An actual ducted propulsion system is used as an example for computational analysis. The computational conditions are divided into four combinations, which are provided with different propeller pitches, cambers, and duct lengths. The method applied in this study is the Computational Fluid Dynamics (CFD) technology, and the contents of the calculation include the hull's viscous resistance, the wave-making resistance, the propeller performance curve, and the self-propulsion simulation in order to obtain the ship's effective wake, thrust deduction factor, hull efficiency, and relative rotative efficiency. The performance curve of the propeller and resistance estimation results are compared with the experimental values for determining the correctness of the self-propulsion simulation. According to the computational analysis, it is known that increasing the propeller pitch cannot effectively increase the hull efficiency. The duct acceleration quality can be reduced by shortening the duct length; hence, when the effective wake fraction and thrust deduction factor decrease, the hull efficiency is increased. In addition, the pressure inside the duct is relatively low if the acceleration quality of the duct is too high, which is unfavorable for controlling the propeller cavitation. Moreover, if the hull bottom in front of the propeller is tapered up from the front to the back at an overly steep angle, the thrust deduction factor will be too large and lead to a relatively low hull efficiency.

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Fluid-structure interaction for the flexible filament's propulsion hanging in the free stream

Cited by 39 publications

References 57 publications

Simulation of fluid-structure interaction during the phaco-emulsification stage of cataract surgery

Simulation of fluid-structure interaction during the phaco-emulsification stage of cataract surgery

An Explicit-Correction-Force Scheme of IB-LBM Based on Interpolated Particle Distribution Function

Discussion of the Fluid Acceleration Quality of a Ducted Propulsion System on the Propulsive Performance

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