TY - JOUR

T1 - Validation of Smagorinsky LES turbulence model in FluidX3D LBM: in-place vs central difference

AU - Plekhanov, Mikhail

AU - Mullyadzhanov, Rustam

N1 - Conference code: 40

PY - 2024/10/14

Y1 - 2024/10/14

N2 - Lattice Boltzmann method (LBM) has been rapidly developing as a CFD approach throughout the last three decades. The rise of new computational architectures like GPU in the last decade pawed the way to emergence of high-performance CFD software based on this method. The most outstanding of such is FluidX3D, utilizing locality of algorithm operations in connection with massive parallelism of GPU. High performance and memory efficiency of this software make it a promising idea to apply FluidX3D to challenging CFD problems, like turbulence simulation. In this work an effort is put into validation of Smagorinsky LES turbulence model implemented in this software. In addition, direct central difference implementation of this model is added to verify existing approach. The validation is done on the turbulent plane channel flow at Reτ = 180. Reasonable agreement between two LES model results was obtained. The convergence of LES profiles to DNS profiles with sufficient resolution proves correctness of implemented model.

AB - Lattice Boltzmann method (LBM) has been rapidly developing as a CFD approach throughout the last three decades. The rise of new computational architectures like GPU in the last decade pawed the way to emergence of high-performance CFD software based on this method. The most outstanding of such is FluidX3D, utilizing locality of algorithm operations in connection with massive parallelism of GPU. High performance and memory efficiency of this software make it a promising idea to apply FluidX3D to challenging CFD problems, like turbulence simulation. In this work an effort is put into validation of Smagorinsky LES turbulence model implemented in this software. In addition, direct central difference implementation of this model is added to verify existing approach. The validation is done on the turbulent plane channel flow at Reτ = 180. Reasonable agreement between two LES model results was obtained. The convergence of LES profiles to DNS profiles with sufficient resolution proves correctness of implemented model.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85211907019&origin=inward&txGid=0e1fa38be069f0f9f19d8c05ebe940a3

UR - https://www.mendeley.com/catalogue/9b1dfd7e-1161-3fd5-9c12-f41fe30d6abf/

U2 - 10.1051/e3sconf/202457801029

DO - 10.1051/e3sconf/202457801029

M3 - Conference article

VL - 578

JO - E3S Web of Conferences

JF - E3S Web of Conferences

SN - 2555-0403

M1 - 01029

T2 - Всероссийская конференция с международным участием «XL Сибирский теплофизический семинар», посвященная 110-летию со дня рождения академика С.С. Кутателадзе и 300-летию Российской академии наук

Y2 - 20 August 2024 through 23 August 2024

ER -