Fluid Dynamics, Computational Modeling and Applications

Juárez, L. Héctor

doi:10.5772/2403

Cited by 2 publications

(1 citation statement)

References 213 publications

(262 reference statements)

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“…Computational Fluid Dynamic (CFD), a kind of numerical methods, is widely used in the design process of sail due to its advantages and the improvement of computational capacity of computers. Viola [9] and Richard [10] analyze the hydrodynamic performance of two America's Cup design candidates, and the verification and validation show that CFD is accurate and scientific; likewise, Jon and Herve, [11] Y. Tahara and Y. Masuyama [12] prove the reliability and many advantages of Reynolds-Averaged Navier-Stokes (RANS)-based CFD methods.…”

Section: Introductionmentioning

confidence: 96%

Study on a Comprehensive Energy-Saving Sail by CFD Method

Zheng¹,

Liu²,

An³

et al. 2016

OJFD

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A comprehensive energy-saving sail (CES) has been proposed in order to promote energy saving and emission reduction from shipping. Wind energy is harvested for propulsion and electrical generator at the same time by a unique structure of CES. A CFD (Computational Fluid Dynamics) code is verified by a case of arc wind sail, and it is used to simulate the pressure and velocity around the CES. The results show that the outlet velocity of air tunnel V o and wind velocity V i serve as an equation V o ≈ 1.31V i , which means the CES can effectively improve the conversion efficiency. In addition, it is found that V o increases with the tunnel diameter to some extend over which it will keep almost constant.

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Section: Introductionmentioning

confidence: 96%

Study on a Comprehensive Energy-Saving Sail by CFD Method

Zheng¹,

Liu²,

An³

et al. 2016

OJFD

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Numerical simulation of an impinging jet array in a square channel covered by a porous layer

Khademi,

Bazargan

2024

Heat Trans

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In many heat transfer applications, the design of the flow field should warrant high heat transfer rates and, meanwhile, reduce the thermal stresses so that hot spots along the heat transfer surface be avoided. A combination of multiple jets impinging on a channel bed together with the surface covered by a porous layer is proposed to satisfy both objectives in the current study. A three‐dimensional numerical simulation using a finite volume method with the second‐order discretization has been applied to visualize the multiple‐impinging jet flow behavior. The impacts of the porous medium parameters, including the thickness, permeability, and porosity, on the magnitude and distribution of the heat transfer along the channel bed have been evaluated. It is shown that the overall heat transfer performance of the proposed flow is significantly improved in comparison with the conventional case of the fluid flowing parallel to the channel bed. The presence of the porous layer leads to a more even spread of the fluid on the target surface, which reduces the thermal stresses and prevents the large differences between the highest and lowest values of heat transfer coefficients. They also found that both the porosity and particularly the permeability of the porous layer enhance the effect of the crossflow along the flow associated with the multiple‐impinging jet setup. For a certain thickness of the porous layer, it is possible to reduce the amplitude of the Nusselt number oscillations effectively, while keeping the overall Nusselt number desirably high.

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Fluid Dynamics, Computational Modeling and Applications

Cited by 2 publications

References 213 publications

Study on a Comprehensive Energy-Saving Sail by CFD Method

Study on a Comprehensive Energy-Saving Sail by CFD Method

Numerical simulation of an impinging jet array in a square channel covered by a porous layer

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