Research on the Aerodynamic Performance of Jet with Unsteady Excitation Based LBM Method
The traditional top-down simulation of fluid numerical methods often focus on discrete truncation error, while ignoring some of the physical conservation and numerical stability, in this sense, the microscopic discrete model based on bottom-up approach, from the perspective of understanding the macro-micro particles and phenomena essentials of fluid mechanics, the phenomenon can be profound reminder of the nature of the macro. Lattice Boltzmann method (LBM) can be more easily handle the boundary between the fluids, the fluid composition, and complex interaction between the interfaces. More, LBM does not require experience or half experience equations with the model, and has been more successful applications of related fields. In this paper, a two-dimensional lattice jet model is obtained, based on the two-dimension and nine-grid LBM model, using the non-equilibrium extrapolation boundary conditions, considering the periodic excitation conditions momentum thickness at the entry in non-steady state, adopting the Lagrange density of macro-discrete system to present the sound field. Under the conditions of different incentives under the low Mach number flow field and sound field, given the results of characteristic line, and CFD, finite element calculations in good agreement with the literature.
lattice Boltzmann method unsteady excitation jet Lagrange density aerodynamic performance
Yongfei Xue Yunchong Tu Xuefen Huang Ke-Qi Wu
Fluid machinery and engineering , School of Energy and Power, Huazhong University of Science and Tec Fluid machinery and engineering, School of Energy and Power, Huazhong University of Science and Tech
国际会议
4th International Symposium on Heat Transfer and Energy Conservation(第四届传热与节能国际研讨会 ISHTEC2012)
广州
英文
1-6
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）