Investigation of supercomputer capabilities for the scalable numerical simulation of computational fluid dynamics problems in industrial applications

Козелков, А. С.; Курулин, В. В.; Лашкин, С. В.; Shagaliev, R.M.; Yalozo, A. V.

doi:10.1134/s0965542516080091

Cited by 32 publications

(27 citation statements)

References 12 publications

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“…The method of large eddy LES (Large Eddy Simulation) makes it possible to obtain good results for both attached and detached flows and to substantially refine the prediction of a number of basic physical processes [8,9,21]. This approach can provide detailed information about nonstationary fields of fluctuations of velocity, temperature, and pressure, which in turn can influence the magnitude and nature of the boundary heat transfer.…”

Section: Approaches To Modeling Turbulencementioning

confidence: 99%

“…This package is the Russian software product of engineering analysis intended for solving conjugate three-dimensional problems of convective heat and mass transfer, aerodynamics, and hydrodynamics on parallel computers. The LOGOS software package has successfully passed the verification and has shown quite good results on a series of various hydrodynamic problems [8,9,17,22,23], including calculations of turbulent and nonstationary flows [20,21] and geophysical phenomena [24][25][26]. difference are characterized by the presence of different-scale vortex structures considering the main features of naturally convective flow and are widely used in engineering applications.…”

Section: Numerical Experimentsmentioning

confidence: 99%

“…RANS models of turbulence are currently the most popular; however, they are not universal and suitable for a wide range of applications, since they only describe the averaged characteristics, which imposes certain requirements on their applicability in practice [8,18]. The highest rating of applicability from RANS models is model SST (Shear Stress Transport) [7].…”

Section: Approaches To Modeling Turbulencementioning

confidence: 99%

“…Modeling using the standard -model of turbulence shows that its application leads to an underestimated heat flux distribution. At the same time, an increase in the accuracy and informativeness of the results for the problems of natural convection can be achieved by using eddyresolving turbulence models, for example, LES, the successful application of which can be found in [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The question of the influence of turbulence on the nature of the flow and the magnitude of the boundary heat transfer is of interest. The existing level of computing power allows modeling convection, at an acceptable time, using the Reynolds-averaged Navier-Stokes equations (RANS approach) [8,9]. This imposes limitations on the description of flow turbulence, for both natural and forced convection, due to the presence of gravitational forces modeled in the RANS approach by empirical relationships, which leads to a significant error in describing the process as a whole.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Simulation of Turbulent Convection at High Rayleigh Numbers

Dmitriev

Козелков

Kurkin

et al. 2018

Modelling and Simulation in Engineering

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The paper considers the possibility of using different approaches to modeling turbulence under conditions of highly developed convection at high Rayleigh numbers. A number of industrially oriented problems with experimental data have been chosen for the study. It is shown that, at Rayleigh numbers from 10 9 to 10 17 , the application of the eddy-resolving LES model makes it possible to substantially increase the accuracy of modeling natural convection in comparison with the linear vortex viscosity model SST. This advantage is most pronounced for cases of a vertical temperature difference with the formation of a large zone of convection of strong intensity. The use of the Reynolds stress model EARSM is shown for cases of natural convective flow in domains with dihedral angles in the simulated region and the predominance of secondary currents. When simulating a less intense convective flow, when the temperature difference is reached at one boundary, the differences in the approaches used to model turbulence are less significant. It is shown that, with increasing values of Rayleigh numbers, errors in the determination of thermohydraulic characteristics increase and, for more accurate determination of them, it is expedient to use eddy-resolving approaches to the modeling of turbulence.

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Section: Approaches To Modeling Turbulencementioning

confidence: 99%

Section: Numerical Experimentsmentioning

confidence: 99%

Section: Approaches To Modeling Turbulencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Simulation of Turbulent Convection at High Rayleigh Numbers

Dmitriev

Козелков

Kurkin

et al. 2018

Modelling and Simulation in Engineering

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Application of mathematical modeling to solve the emergency water landing task in the interests of passenger aircraft certification

Козелков

Pogosyan

Strelets

et al. 2021

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Numerical simulation of aerodynamic problems based on adaptive mesh refinement method

et al. 2020

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Numerical simulation of aerodynamic problems using an algorithm, which identifies shock regions and refines the mesh there using an adaptive mesh refinement method, is performed. The static mesh adaptation method is based on cell partitioning by adding new nodes to cell faces. The method of identification of the shock regions using a pressure and density gradient criterion and its verification are presented. The use and applications of the developed algorithm are illustrated, and supersonic and hypersonic flows with strong shock waves are calculated. The results computed explore the shock-wave structure of the flow, which develops near the nose cone section of a body and determines its aerodynamic performance. The aerodynamic performance of bodies with different nose cone designs, including a body with a spike and a pointed cone with an opposing gas jet injected from the nose section, are evaluated based on the proposed method. The method of static mesh adaptation provides a visually sharper picture of the flow around the body and reduces the numerical error of drag coefficient calculations in comparison with wind tunnel measurements. The results computed on meshes of similar resolution constructed with the adaptation method and automatic mesh generator are compared. The results computed on the adaptive mesh are similar to those computed on the mesh generated automatically, but the adaptive mesh has a smaller number of cells.

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Investigation of supercomputer capabilities for the scalable numerical simulation of computational fluid dynamics problems in industrial applications

Cited by 32 publications

References 12 publications

Simulation of Turbulent Convection at High Rayleigh Numbers

Simulation of Turbulent Convection at High Rayleigh Numbers

Application of mathematical modeling to solve the emergency water landing task in the interests of passenger aircraft certification

Numerical simulation of aerodynamic problems based on adaptive mesh refinement method

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