Evaluation of an effective and robust implicit time-integration numerical scheme for Navier-Stokes equations in a CFD solver for compressible flows

Maia, Ana Adalgiza Garcia; Cavalca, Diogo Ferraz; Tomita, Jesuíno Takachi; Costa, Fabíola Paula; Bringhenti, Cleverson

doi:10.1016/j.amc.2021.126612

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…flume bottom, lateral walls and body surfaces, are assigned as no-slip wall conditions. The entire computational domain is discretised by a series of control volumes, and the coupled problem between the hydrodynamic and aerodynamic behaviours of the hybrid-type WECs are solved using a second-order implicit pressure-based solver [39]. The physical variables are interpolated by means of a quadratic-upwind kinematics algorithm.…”

Section: Numerical Modelmentioning

confidence: 99%

Experimental Investigation of a Dual-Pontoon Wec-Type Breakwater with a Hydraulic-Pneumatic Complementary Power Take-Off System

Cheng

Song

et al. 2023

Preprint

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Section: Numerical Modelmentioning

confidence: 99%

Experimental Investigation of a Dual-Pontoon Wec-Type Breakwater with a Hydraulic-Pneumatic Complementary Power Take-Off System

Cheng

Song

et al. 2023

Preprint

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“…In physics, the mathematical models are usually nonlinear and complicated like Navier-Stokes' equations, Schr ödinger's equations and Euler's equations, so that it is hard to obtain the analytical solutions. But when it comes to the models in application areas, numerical methods play an important part in understanding the real world systems, with accuracy being ensured and one can see some examples in [10,47,52,72]. On the other hand, the numerical methods can also be utilized in proving the existence of the solutions of nonlinear differential equations c.f.…”

Section: Numerical Analysismentioning

confidence: 99%

The water hammer problem and its numerical analysis

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Research on Parameter Spatialization and Adaptive Correction Models in Fluid Numerical Simulations

Qiao

2022

Water

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Computational fluid dynamics (CFD) numerical simulations play an important role in many research fields, including hydrological basins, rivers, floods, and dam breaks. Currently, much research mainly pursues accuracy, efficiency, scale, dimensions, etc. In most models, the influencing parameters are adjusted manually, and only one constant is designed in a calculation area, resulting in a lack of heterogeneity in the variable space. In this article, using the idea of spatial interpolation by designing some control points along the river, a spatial design of the Manning coefficient is proposed in the CFD numerical simulation, and an adaptive correction model considering the different correction logic is researched to calibrate the model. Finally, the model is proven to be correct and effective, and it is converged with the Malpasset Dam-breaking case. It can help reduce the artificial calibration and improve simulation accuracy by designing the spatial adaptive correction parameter.

show abstract

Evaluation of an effective and robust implicit time-integration numerical scheme for Navier-Stokes equations in a CFD solver for compressible flows

Cited by 3 publications

References 28 publications

Experimental Investigation of a Dual-Pontoon Wec-Type Breakwater with a Hydraulic-Pneumatic Complementary Power Take-Off System

Experimental Investigation of a Dual-Pontoon Wec-Type Breakwater with a Hydraulic-Pneumatic Complementary Power Take-Off System

The water hammer problem and its numerical analysis

Research on Parameter Spatialization and Adaptive Correction Models in Fluid Numerical Simulations

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