Effects of a Premixed Layer on the Richtmyer–Meshkov Instability
TIAN Bao-Lin1, ZHANG Xin-Ting2, QI Jin1**, WANG Shuang-Hu1
1Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094 2Ecole Centrale de Pekin, Beihang University, Beijing 100191
Effects of a Premixed Layer on the Richtmyer–Meshkov Instability
TIAN Bao-Lin1, ZHANG Xin-Ting2, QI Jin1**, WANG Shuang-Hu1
1Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100094 2Ecole Centrale de Pekin, Beihang University, Beijing 100191
摘要The effects of a premixed layer on the Richmyer–Meshkov instability (RMI) are studied by setting a density gradient for the first shocked fluid in the RMI problems. The RMI with initial density gradients are simulated by using a high resolution arbitrary Lagrangian–Eulerian method. The effects of density gradient and gradient width are analyzed on the basis of the simulation results for the shock from a light fluid to a heavy fluid and for the shock from a heavy fluid to a light fluid. Overall, the premixed layer can suppress the perturbation growth, and the detailed effects are different depending on the detailed premixed configuration. The width of the premixed layer has a very light influence on the perturbation, while the density gradient has quite a significant effect on two kinds of RMIs.
Abstract：The effects of a premixed layer on the Richmyer–Meshkov instability (RMI) are studied by setting a density gradient for the first shocked fluid in the RMI problems. The RMI with initial density gradients are simulated by using a high resolution arbitrary Lagrangian–Eulerian method. The effects of density gradient and gradient width are analyzed on the basis of the simulation results for the shock from a light fluid to a heavy fluid and for the shock from a heavy fluid to a light fluid. Overall, the premixed layer can suppress the perturbation growth, and the detailed effects are different depending on the detailed premixed configuration. The width of the premixed layer has a very light influence on the perturbation, while the density gradient has quite a significant effect on two kinds of RMIs.
TIAN Bao-Lin;ZHANG Xin-Ting;QI Jin**;WANG Shuang-Hu
. Effects of a Premixed Layer on the Richtmyer–Meshkov Instability[J]. 中国物理快报, 2011, 28(11): 114701-114701.
TIAN Bao-Lin, ZHANG Xin-Ting, QI Jin**, WANG Shuang-Hu
. Effects of a Premixed Layer on the Richtmyer–Meshkov Instability. Chin. Phys. Lett., 2011, 28(11): 114701-114701.
[1] Richtmyer R D 1960 Pure Appl. Math. 13 297
[2] Meshkov E E 1970 NASA Tech. Trans. F-13 074
[3] Brouillette M 2002 Annu. Rev. Fluid Mech. 34 445
[4] Tian B, Fu D and Ma Y 2006 Acta Mech Sin. 22 9
[5] Mikaelian K O 1991 Phys. Fluids A 3 2368
[6] Phama T and Meiron D 1993 Phys. Fluids A 5 344
[7] Tian B, Shen W, Jiang S, Wang S and Liu Y 2011 Computers & Fluids 46 113
[8] Tian B, Fu D and Ma Y 2004 Chin. Phys. Lett. 21 1770
[9] Mikaelian K O 2011 Physica D 240 935
[10] Wang L, Ye W and Li Y 2010 Chin. Phys. Lett. 27 025202
[11] Zhang X and Tan D 2009 Chin. Phys. Lett. 26 084703
2011, Vol. 28 
