Numerical study on the mixing and evaporation process of a liquid kerosene jet in a scramjet combustor

Li, Peibo; Wang, Hongbo; Sun, Mao; Liu, Chaoyang; Li, Fēi

doi:10.1016/j.ast.2021.107095

Cited by 39 publications

(1 citation statement)

References 67 publications

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“…The numerical simulation with 26.46 million grids and 5 million droplets was performed on 756 central processing unit (CPU) cores of the Tianhe-1 for 10 flow-throughs, running for approximately 31 days. Recently, Li et al [24] added an evaporation model to further study the spray characteristics of kerosene jet in the cavitybased supersonic combustor. In the study, the number of cells and droplets was 18 million and 0.115 million, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Heterogeneous Parallel Algorithm for Euler-Lagrange Simulations of Liquid in Supersonic Flow

Liu,

Sun,

Wang

et al. 2023

Applied Sciences

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In spite of its prevalent usage for simulating the full-field process of the two-phase flow, the Euler–Lagrange method suffers from a heavy computing burden. Graphics processing units (GPUs), with their massively parallel architecture and high floating-point performance, provide new possibilities for high-efficiency simulation of liquid-jet-related systems. In this paper, a central processing unit/graphics processing unit (CPU/GPU) parallel algorithm based on the Euler–Lagrange scheme is established, in which both the gas and liquid phase are executed on the GPUs. To realize parallel tracking of the Lagrange droplets, a droplet dynamic management method is proposed, and a droplet-locating method is developed to address the cell. Liquid-jet-related simulations are performed on one core of the CPU with a GPU. The numerical results are consistent with the experiment. Compared with a setup using 32 cores of CPUs, considerable speedup is obtained, which is as high as 32.7 though it decreases to 20.2 with increasing droplets.

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Section: Introductionmentioning

confidence: 99%