Hovering rotor solutions by high-order methods on unstructured grids

Ricci, Francesco; Silva, Paulo Augusto Strobel Freitas; Tsoutsanis, Panagiotis; Antoniadis, Antonis F.

doi:10.1016/j.ast.2019.105648

Cited by 24 publications

(15 citation statements)

References 55 publications

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“…In papers [2,3] the results of solving similar problems using numerical modeling, where a system of Reynolds-averaged equations Navier-Stockes, closed by various turbulence models, is chosen as a mathematical model to describe the motion of a viscous turbulent flow of a compressible gas. Currently for the rotors aerodynamics modeling the high order schemes on the mixed-element unstructured grids are used with compressible RANS equations [4].…”

Section: Introductionmentioning

confidence: 99%

Simulation of Helicopter Rotors On Unstructured Mixed Meshes Using Edge-Based Reconstruction Schemes

Bobkov¹,

Abalikin²,

Kozubskaya³

2021

14th WCCM-ECCOMAS Congress

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The paper gives a detailed description of the developed numerical method for simulating the turbulent flow around a helicopter rotor and calculating its aerodynamic characteristics. The method is based on the original vertex-centered finite-volume EBR schemes. The features of these schemes are their higher accuracy that is achieved through the use of edge-based reconstruction of variables on extended quasi-one-dimensional stencils, and a moderate computational cost that allows for serial computations. When dealing with discontinuities or solutions with large gradients, a quasi-one-dimensional EBR-WENO scheme is used. The methods are implemented in the in-house code NOISEtte within the hybrid MPI-OpenMP parallel model. Validation of the developed techniques is carried out by simulating several cases for hovering and forward-flight regimes of helicopter rotors.

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Section: Introductionmentioning

confidence: 99%

Simulation of Helicopter Rotors On Unstructured Mixed Meshes Using Edge-Based Reconstruction Schemes

Bobkov¹,

Abalikin²,

Kozubskaya³

2021

14th WCCM-ECCOMAS Congress

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“…The reconstruction process adopted in UCNS3D follows the approaches of Tsoutsanis et al [49,50], Titarev et al [51] that have been previously applied to smooth and discontinuous flow problems [1][2][3][4]40,[52][53][54][55][56][57][58][59][60][61] and only the key components are going to be described herein and the reader is referred to [49][50][51]. For a cell i a high-order polynomial p i (x, y, z) of order r can be built that provides r + 1 order of accuracy, by requiring it to have the same average as a general quantity U i .…”

Section: Spatial Discretisationmentioning

confidence: 99%

“…One of the strategies that has been widely adopted for addressing all of the aforementioned challenges across the finitevolume (FV) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17], finite-element (FE) [18][19][20][21][22][23][24][25][26], spectral Finite Volume (SFV) [27][28][29][30][31], and combinations of them [32][33][34][35][36][37] is to develop and apply high-resolution and high-order numerical methods. High-resolution, high-order methods reduce unphysical oscillations across discontinuities, providing enhanced accuracy in flow predictions in smooth regions, while being more computational efficient than low-order methods.…”

Section: Introductionmentioning

confidence: 99%

UCNS3D: An open-source high-order finite-volume unstructured CFD solver

Tsoutsanis

2022

Preprint

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UCNS3D is an open-source computational solver for compressible flows on unstructured meshes. Stateof-the-art high-order methods and their associated benefits can now be implemented for industrial-scale CFD problems due to the flexibility and highly-automated generation offered by unstructured meshes.We present the governing equations of the physical models employed in UCNS3D, and the numerical framework developed for their solution. The code has been designed so that extended to other systems of equations and numerical models is straightforward. The employed methods are validated towards a series of stringent well-established test problems against experimental or analytical solutions, where the full capabilities of UCNS3D in terms of applications spectrum, robustness, efficiency, and accuracy are demonstrated.

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“…The present polynomial reconstruction is based upon the approaches of [5,6,13,52], that have been applied to smooth and discontinuous flow problems [38,47,72,[75][76][77][78][79][80][81][82][83][84][85][86] and only the key-components will be presented herein and the reader is referred to [5,6,52] for further details. Unstructured meshes involve the presence of various elements shapes and sizes, and a transformation from physical space to a reference space is performed to reduce the scaling effects as introduced by Dumbser et al [13,14,87].…”

Section: Reconstructionmentioning

confidence: 99%

Arbitrary high order central non-oscillatory schemes on mixed-element unstructured meshes

Tsoutsanis

Dumbser

2021

Computers & Fluids

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Hovering rotor solutions by high-order methods on unstructured grids

Cited by 24 publications

References 55 publications

Simulation of Helicopter Rotors On Unstructured Mixed Meshes Using Edge-Based Reconstruction Schemes

Simulation of Helicopter Rotors On Unstructured Mixed Meshes Using Edge-Based Reconstruction Schemes

UCNS3D: An open-source high-order finite-volume unstructured CFD solver

Arbitrary high order central non-oscillatory schemes on mixed-element unstructured meshes

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