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| 1 | Receptivity to free-stream disturbance waves for hypersonic flow over a blunt cone显示文摘A high-order shock-fitting finite difference scheme is studied and used to do direc-tion numerical simulation (DNS) of hypersonic unsteady flow over a blunt cone with fast acoustic waves in the free stream, and the receptivity problem in the blunt cone hypersonic boundary layers is studied. The results show that the acoustic waves are the strongest disturbance in the blunt cone hypersonic boundary layers. The wave modes of disturbance in the blunt cone boundary layers are first, second, and third modes which are generated and propagated downstream along the wall. The results also show that as the frequency decreases, the amplitudes of wave modes of disturbance increase, but there is a critical value. When frequency is over the critial value, the amplitudes decrease. Because of the discontinuity of curvature along the blunt cone body, the maximum amplitudes as a function of frequencies are not monotone. | ZHANG YuDong FU DeXun MA YanWen LI XinLiang | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，11： | 8 |
| 2 | Numerical investigation of Richtmyer-Meshkov instability driven by cylindrical shocks显示文摘在这篇论文,有高顺序精确性和高分辨率的一个数字方法被开发模仿 Richtmyer-Meshkov (RM ) 圆柱的冲击波驾驶的不稳定性。在圆柱的坐标的可压缩的 Euler 方程为圆柱的几何学和精确的组控制计划被采用到 discretize 的第三份订单被采用方程。而且,一种适应格子技术被开发在动人的接口附近精制格子改进数字解决方案的分辨率。模拟的结果展出了 RM 不稳定性的进化过程,并且 Atwood 数字的效果被学习。越大 Atwood 数字的绝对值,越 larger 不安振幅。非线性的效果在圆柱的几何学显然表明更多。从杆中心反映的吃惊加速接口为第二次,更加复杂化物件典当和第二等的吃惊的接口进化过程,和如此的现象被学习。 | Baolin Tian Dexun Fu Yanwen Ma | 2006 | Acta Mechanica Sinica2006，22，1： | 7 |
| 3 | A 5th order monotonicity-preserving upwind compact difference scheme显示文摘Based on an upwind compact difference scheme and the idea of monotonicity-preserving, a 5th order monotonicity-preserving upwind compact difference scheme (m-UCD5) is proposed. The new difference scheme not only retains the advantage of good resolution of high wave number but also avoids the Gibbs phenomenon of the original upwind compact difference scheme. Compared with the classical 5th order WENO difference scheme, the new difference scheme is simpler and small in diffusion and computation load. By employing the component-wise and characteristic-wise methods, two forms of the new difference scheme are proposed to solve the N-S/Euler equation. Through the Sod problem, the Shu-Osher problem and the two-dimensional Double Mach Reflection problem, numerical solutions have demonstrated this new scheme does have a good resolution of high wave number and a robust ability of capturing shock waves, leading to a conclusion that the new difference scheme may be used to simulate complex flows containing shock waves. | HE ZhiWei LI XinLiang FU DeXun MA YanWen | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，3： | 6 |
| 4 | DNS of compressible turbulent boundary layer around a sharp cone显示文摘Direct numerical simulation of the turbulent boundary layer over a sharp cone with 20° cone angle (or 10° half-cone angle) is performed by using the mixed seventh- order up-wind biased finite difference scheme and sixth-order central difference scheme. The free stream Mach number is 0.7 and free stream unit Reynolds number is 250000/inch. The characteristics of transition and turbulence of the sharp cone boundary layer are compared with those of the flat plate boundary layer. Statistics of fully developed turbulent flow agree well with the experimental and theoretical data for the turbulent flat-plate boundary layer flow. The near wall streak-like structure is shown and the average space between streaks (normalized by the local wall unit) keeps approximately invariable at different streamwise locations. The turbulent energy equation in the cylindrical coordinate is given and turbulent en-ergy budget is studied. The computed results show that the effect of circumferen-tial curvature on turbulence characteristics is not obvious. | LI XinLiang FU DeXun MA YanWen | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，6： | 5 |
| 5 | DNS of compressible turbulent boundary layer over a blunt wedge显示文摘Direct numerical simulation of spatially evolving compressible boundary layer over a blunt wedge is performed in this paper. The free-stream Mach number is 6 and the disturbance source produced by wall blowing and suction is located downstream of the sound-speed point. Statistics are studied and compared with the results in incompressible flat-plate boundary layer. The mean pressure gradient effects on the vortex structure are studied. | LI Xinliang FU Dexun MA Yanwan | 2005 | Science China(Physics,Mechanics & Astronomy)2005，48，2： | 3 |
| 6 | Optimization of the MUSCL scheme by dispersion and dissipation显示文摘A second-order optimized monotonicity-preserving MUSCL scheme(OMUSCL2) is developed based on the dispersion and dissipation optimization and monotonicity-preserving technique.The new scheme(OMUSCL2) is simple in expression and is easy for use in CFD codes.Compared with the original second-order or third-order MUSCL scheme,the new scheme shows nearly the same CPU cost and higher resolution to shockwaves and small-scale waves.This new scheme has been tested through a set of one-dimensional and two-dimensional tests,including the Shu-Osher problem,the Sod problem,the Lax problem,the two-dimensional double Mach reflection and the RAE2822 transonic airfoil test.All numerical tests show that,compared with the original MUSCL schemes,the new scheme causes fewer dispersion and dissipation errors and produces higher resolution. | LENG Yan LI XinLiang FU DeXun MA YanWen | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，5： | 2 |
| 7 | Complex Transition of Double-Diffusive Convection in a Rectangular Enclosure with Height-to-Length Ratio Equal to 4: Part I显示文摘This is the first part of direct numerical simulation(DNS)of double-diffusive convection in a slim rectangular enclosure with horizontal temperature and concentration gradients.We consider the case with the thermal Rayleigh number of 105,the Pradtle number of 1,the Lewis number of 2,the buoyancy ratio of composition to temperature being in the range of[0,1],and height-to-width aspect ration of 4.A new 7thorder upwind compact scheme was developed for approximation of convective terms,and a three-stage third-order Runge-Kutta method was employed for time advancement.Our DNS suggests that with the buoyancy ratio increasing form 0 to 1,the flow of transition is a complex series changing from the steady to periodic,chaotic,periodic,quasi-periodic,and finally back to periodic.There are two types of periodic flow,one is simple periodic flow with single fundamental frequency(FF),and another is complex periodic flow with multiple FFs.This process is illustrated by using time-velocity histories,Fourier frequency spectrum analysis and the phase-space trajectories. | Xian Liang Xinliang Li Dexun Fu Yanwen Ma | 2009 | Communications in Computational Physics2009，6，7： | 2 |
| 8 | Evolution of three-dimensional coherent structures in compressible axisymmetric jet显示文摘 | Mingyu Liu Yanwen Ma Dexun Fu | 2003 | Science in China Series G: Physics Mechanics and Astronomy2003，，4： | 1 |
| 9 | Direct numerical simulation of hypersonic boundary layer transition over a blunt cone with a small angle of attack显示文摘 | Li Xinliang Fu Dexun Ma Yanwen | 2010 | Physics of Fluids2010，22，： | 1 |
| 10 | Numerical simulation of Richtmyer-Meshkov instability显示文摘The compressible Navier-Stokes equations discretized with a fourth order accurate compact finite difference scheme with group velocity control are used to simulate the Richtmyer-Meshkov (R-M) instability problem produced by cylindrical shock-cylindrical material interface with shock Mach number Ms=1.2 and density ratio 1:20 (interior density/outer density). Effect of shock refraction, reflection, interaction of the reflected shock with the material interface, and effect of initial perturbation modes on R-M instability are investigated numerically. It is noted that the shock refraction is a main physical mechanism of the initial phase changing of the material surface. The multiple interactions of the reflected shock from the origin with the interface and the R-M instability near the material interface are the reason for formation of the spike-bubble structures. Different viscosities lead to different spike-bubble structure characteristics. The vortex pairing phenomenon is found in the initial double mode simulation. The mode interaction is the main factor of small structures production near the interface. | FU Dexun, MA Yanwen, ZHANG Linbo & TIAN BaolinState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China State Key Laboratory of Scientific and Engineering Computing, Institute of Computational Mathematics, Chinese Academy of Sciences, Beijing 100080, China | 2004 | Science China Mathematics2004，47，z1： | 1 |
| 11 | Direct numerical simulation of compressible isotropic turbulence显示文摘 | Li Xinliang Fu Dexun Ma Yanwen | 2002 | Science in China Series A: Mathematics2002，，11： | 1 |
| 12 | DNS and scaling law analysis of compressible turbulent channel flow显示文摘 | Xinliang Li Yanwen Ma Dexun Fu | 2001 | Science in China Series A: Mathematics2001，，5： | 1 |
| 13 | Fourth order accurate com-pact scheme with group velocity control(GVC)显示文摘 | Ma Yanwen Fu Dexun | 2001 | Science in China Series A2001，，6： | 1 |
| 14 | DNS and scaling law analysis of compressible turbulent channel flow显示文摘 | Xinliang Li Yanwen Ma Dexun Fu | 2001 | Science in China Series A: Mathematics2001，，5： | 1 |
| 15 | Scheme construction with numerical flux residual correction (NFRC) and group velocity control (GVC)显示文摘For simulating multi-scale complex flow fields like turbulent flows, the high order accurate schemes are preferred. In this paper, a scheme construction with numerical flux residual correction (NFRC) is presented. Any order accurate difference approximation can be obtained with the NFRC. To improve the resolution of the shock, the constructed schemes are modified with group velocity control (GVC) and weighted group velocity control (WGVC). The method of scheme construction is simple, and it is used to solve practical problems. | MA Yanwen FU Dexun | 2006 | Progress in Natural Science:Materials International2006，16，12： | 1 |
| 16 | Direct numerical simulation of compressible isotropic turbulence显示文摘 | Li Xinliang Fu Dexun Ma Yanwen | 2002 | Science in China Series A: Mathematics2002，，11： | 1 |
| 17 | A high order accurate difference scheme for complex flow fields显示文摘 | Fu Dexun Ma Yanwei | 1997 | J Comput Phys1997，134，： | 1 |
| 18 | Direct numerical simulation of passive scalar in decaying compressible turbulence显示文摘The passive scalars in the decaying compressible turbulence with the initial Reynolds number (defined by Taylor scale and RMS velocity) Re=72, the initial turbulent Mach numbers (defined by RMS velocity and mean sound speed) Mt=0.2—0.9, and the Schmidt numbers of passive scalar Sc=2—10 are numerically simulated by using a 7th order upwind difference scheme and 8th order group velocity control scheme. The computed results are validated with different numerical methods and different mesh sizes. The Batchelor scaling with k -1 range is found in scalar spectra. The passive scalar spectra decay faster with the increasing turbulent Mach number. The extended self-similarity (ESS) is found in the passive scalar of compressible turbulence. | LI Xinliang FU Dexun MA Yanwen | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，1： | 1 |
| 19 | Effects of wall temperature on boundary layer stability over a blunt cone at Mach 7.99显示文摘 | Xian Liang Xinliang Li Dexun Fu Yanwen Ma | 2009 | Computers and Fluids2009，，2： | 1 |
| 20 | Fourth order accurate compact scheme with group velocity control (GVC )显示文摘 | Yanwen Ma Dexun Fu | 2001 | Science in China Series A: Mathematics2001，，9： | 1 |
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