AUSM(ALE): A Geometrically Conservative Arbitrary Lagrangian–Eulerian Flux Splitting Scheme

Smith, Richard W.

doi:10.1006/jcph.1998.6180

Cited by 61 publications

(70 citation statements)

References 30 publications

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“…The bottom panel of the same figure documents the comparison between 1D and 3D/1D coupled pressure profiles along the ray of the explosion in the case described in [9]; even though the meshes are rather different for the two solvers, the position and the intensity of the shock wave are quite well captured by the DD strategy.…”

Section: The Solution Strategy: a Time-space Domain Decomposition Andmentioning

confidence: 83%

“…The black lines represent the edges of the blocks in which the domain is decomposed, they become finer with increasing pressure values. Bottom: comparison of the 1D and 3D pressure solutions for the underwater explosion of [9]. The red large circles give the position of the gas-water interface.…”

Section: The Solution Strategy: a Time-space Domain Decomposition Andmentioning

confidence: 99%

“…To simplify the analysis, hereinafter the explosion described in [9] is taken as the benchmark for all the examples. For this case, we can make variables dimensionless by characteristic fluid dynamic quantities.…”

Section: Simplification Of the Problem In Case Of Multiple Explosionsmentioning

confidence: 99%

See 2 more Smart Citations

Gas cavity–body interactions: Efficient numerical solution

Colicchio¹,

Greco

Faltinsen

et al. 2015

Computers & Fluids

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The paper investigates the interactions occurring between a gas cavity, the surrounding liquid and the nearby structures. In more detail, focus is in the characterization of the various dynamical phases (e.g. "acoustic phase" and "gas bubble phase") and in the design of a modelling approach aimed at minimizing the computational efforts needed to analyse the cases of gas cavities spatially close to the target structure. Hence, a Domain Decomposition (DD) strategy is proposed which enables efficient computations. Hyperbolic flow equations govern the flow evolution and, while the inner domain 1D solution is calculated by means of an HLL scheme for the fluxes and a 1 st order time stepping, the outer domain 3D solution is achieved on the basis of a MUSCL scheme coupled with a 3 rd order Runge-Kutta time stepping. Various comparative tests, based on use of the full-scale experimental data by Smith (1975), have been used to test the DD strategy. A simplified approach is, finally, proposed to be used for the complex case of multiple cavity explosions. Use of the approach reveals that the worst load scenario for the target structure occurs when all cavities explode simultaneously.

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Section: The Solution Strategy: a Time-space Domain Decomposition Andmentioning

confidence: 83%

Section: The Solution Strategy: a Time-space Domain Decomposition Andmentioning

confidence: 99%

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Gas cavity–body interactions: Efficient numerical solution

Colicchio¹,

Greco

Faltinsen

et al. 2015

Computers & Fluids

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show abstract

“…The modelled plate has been forced by the underwater explosion caused by a TNT charge documented in [17], which is used as a representative sample of typical explosions, to assess possible ship damages. For this explosion, all parameters needed for the gas and liquid EOSs A systematic parametric analysis, in terms of the standoff distance r p , i.e.…”

Section: Physical Investigationsmentioning

confidence: 99%

Hydroelastic behaviour of a structure exposed to an underwater explosion

Colicchio¹,

Greco²,

Brocchini

et al. 2015

Phil. Trans. R. Soc. A.

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“…Ruggirello et al [27] used the bulk material motion to formulate a multiphase Lagrangian method, but this requires the use of a drift velocity, such that the material is not constrained to the computational cell as in a standard single-phase Lagrangian method. The un-split method, also referred to as a direct-ALE method, reformulates the governing equations in a moving reference frame and solves the grid motion and fluid flow simultaneously in a single step [26,[28][29][30][31][32][33][34][35]. Saurel et al [36] applied the DEM on moving meshes using the un-split direct-ALE approach.…”

Section: Structural Interactionmentioning

confidence: 99%

A Cell-Centered Multiphase ALE Scheme With Structural Coupling

Dunn

2012

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AUSM(ALE): A Geometrically Conservative Arbitrary Lagrangian–Eulerian Flux Splitting Scheme

Cited by 61 publications

References 30 publications

Gas cavity–body interactions: Efficient numerical solution

Gas cavity–body interactions: Efficient numerical solution

Hydroelastic behaviour of a structure exposed to an underwater explosion

A Cell-Centered Multiphase ALE Scheme With Structural Coupling

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