An immersed boundary method-discrete unified gas kinetic scheme simulation of particle-laden turbulent channel flow on a nonuniform orthogonal mesh
Karzhaubayev K. Wang L.-P. Peng C. Zhakebayev D.
March 2024John Wiley and Sons Ltd
International Journal for Numerical Methods in Fluids
2024#96Issue 3318 - 335 pp.
Particle-resolved simulations of turbulent particle-laden flows provide a powerful research tool to explore detailed flow physics at all scales. However, efficient particle-resolved simulations for wall-bounded turbulent particle-laden flows remain a challenging task. In this article, we develop a simulation approach for a turbulent channel flow laden with finite-size particles on a nonuniform mesh by combining the discrete unified gas kinetic scheme (DUGKS) and the immersed boundary method (IBM). The standard discrete delta function was modified according to reproducible kernel particle method to take into account mesh non-uniformity and correctly conserve force moments. Simulation results based on uniform and nonuniform meshes are compared to validate and examine the accuracy of the nonuniform mesh DUGKS-IBM. Finally, the computational performance of the nonuniform mesh DUGKS-IBM is discussed.
channel flow , DUGKS , IBM , nonuniform mesh , particle-laden
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Guangdong Provincial Key Laboratory of Turbulence Research and Applications, Center for Complex Flows and Soft Matter Research and Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Guangdong, Shenzhen, China
Shandong University, Shandong, Jinan, China
National Engineering Academy of the Republic of Kazakhstan, Almaty, Kazakhstan
Guangdong Provincial Key Laboratory of Turbulence Research and Applications
Shandong University
National Engineering Academy of the Republic of Kazakhstan
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