A Second-Order Time-Accurate Finite Volume Method for Unsteady Incompressible Flow on Hybrid Unstructured Grids

Kim, Dongjoo; Choi, Haecheon

doi:10.1006/jcph.2000.6546

Cited by 176 publications

(146 citation statements)

References 34 publications

(60 reference statements)

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“…Different temporal schemes have been proposed in the literature to deal with time marching algorithm for turbulent flows (see for instance [28,29,30]). In this work, a two-step linear explicit scheme on a fractional-step method proposed by Trias & Lehmkuhl [31] is used.…”

Section: Cfdandht Molten Salt Objectmentioning

confidence: 99%

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

et al. 2013

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Two-tank molten salt storages are the most widespread thermal energy storage technology within concentrated solar power plants. In spite of this, there are design aspects such as thermal losses control, optimisation of the storage or how these devices scale up with the increase in power capacity of the plant which still should be considered. In this sense, numerical modelling of these systems can be a powerful tool for reducing their cost. The present work aims at modelling molten salt tanks by proposing a parallel modular object-oriented methodology which considers the different elements of the storage (e.g. tank walls, insulation material, tank foundation, molten salt storage media, etc.) as independent systems. Each of these elements can be solved independently and using different levels of modelling (from global to fully three-dimensional models), while at the same time they are to linked each other through their boundary conditions. The mathematical models used, together with some illustrative examples of the application of the proposed methodology, are presented and discussed in detail. Keywords

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Section: Cfdandht Molten Salt Objectmentioning

confidence: 99%

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

et al. 2013

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“…A fractional step method is implemented [23] to compute pressure and velocity fields. Here, Crank-Nicholson scheme is used for the temporal discretization of the convection term in contrast to Adams-bashforth scheme used in the original method.…”

Section: Velocity and Pressure Couplingmentioning

confidence: 99%

“…Here, Crank-Nicholson scheme is used for the temporal discretization of the convection term in contrast to Adams-bashforth scheme used in the original method. In addition, convection term is linearized using Picard iteration method instead of the Newton's method in [23]. This is expressed as a flowchart in [16].…”

Section: Velocity and Pressure Couplingmentioning

confidence: 99%

Simulation of Water-Entry and Water-Exit Problems Using a Moving Mesh Algorithm

Panahi¹

2012

Journal of Theoretical and Applied Mechanics

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Abstract. Simulation of the water-entry and water-exit particularly, at the interface of two phases i.e. water and air due to the effect of flow-induced loads, gravity force and trapped air cushion presence is very complicated. This paper attempts to introduce a finite volume-based moving mesh algorithm in order to simulate such problems in a viscous incompressible two-phase medium. The algorithm employs a fractional step method to deal with the coupling between pressure and velocity fields. Interface is also captured by solving a volume fraction transport equation. A boundary-fitted body-attached mesh of quadrilateral Control Volumes (CVs) is implemented to record hydrodynamic time histories of loads, motions and interfacial flow changes around the structure. Forced water-exit of a cylinder is simulated based on the introduced algorithm, together with free symmetric and asymmetric water-entry of wedges. Results show that the presented algorithm is favorably capable of assessing such complexities when comparing to experimental data.

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“…Step method was applied [17]. In the first step, a momentum equation was solved to obtain velocity components in the absence of pressure terms (mid-term velocities):…”

Section: Governing Equationsmentioning

confidence: 99%

“…In order to include pressure effect on the velocity components in the new time step the following relationship was used [17]: (4) By which can be reformulated as equation (5):…”

Section: Governing Equationsmentioning

confidence: 99%

Particle level set implementation on the finite volume method

Elmi

Kolahdouzan

2010

WIT Transactions on Engineering Sciences

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Prediction of free surface elevation is one of the most important phenomena in the field of free surface flow modelling. To date different procedures have been introduced to capture the free surface. In the current study, a EulerianLagrangian Method named Particle Level Set (PLS) is developed to predict the location of free surface. The first implementation of this scheme was on the Finite Difference Method. This paper deals with the implementation of Particle Level Set on the Finite Volume mesh. IN the PLS scheme, computational particles were deployed in conjunction with LS function to raise the accuracy of function values. Results obtained from the developed model were compared with experimental and numerical results of dam break cited in the literature which represent the capability of method to predict high gradient free surface changes accurately.

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A Second-Order Time-Accurate Finite Volume Method for Unsteady Incompressible Flow on Hybrid Unstructured Grids

Cited by 176 publications

References 34 publications

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants

Simulation of Water-Entry and Water-Exit Problems Using a Moving Mesh Algorithm

Particle level set implementation on the finite volume method

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