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| 1 | Simulation of bluff body stabilized flows with hybrid RANS and PDF method显示文摘这研究的动机是由使用概率调查骚乱化学相互作用密度功能(PDF ) 方法。历久不渝的混合雷纳兹平均 Navier 司烧(RANS )/PDF 方法被用来模仿狂暴的非反应、反应的流动。联合波动速度频率作文 PDF 方程结合了雷纳兹平均密度,动量和精力方程被与有限体积(FV ) 相结合的拉格兰加恩·蒙蒂·卡洛(MC ) 方法在未组织的网孔上解决方法。稳定的非反应的流动回答的 axisymmetric 绝壁身体的模拟在这篇论文被介绍。再通行地区的计算长度在对试验性的数据的好同意。而且,有 jet-to-coflow 动量流动比率的增加的流动模式的重要变化很好被预言。另外,比较在联合 PDF 模型和二个不同雷纳兹压力模型之间被做。 | Minming Zhu Xingsi Han Haiwen Ge Yiliang Chen | 2007 | Acta Mechanica Sinica2007，23，3： | 4 |
| 2 | Numerical investigation on hydrogen production by CH_4-Rich combustion in an alumina foam显示文摘The two-phase volume-averaged model with the detailed chemistry reaction mechanism GRI 3.0 was adopted in the quasi-steady-state simulation of hydrogen production by CH4-rich filtration combustion in an alumina foam under fully developed conditions. The relations among the combustion wave velocity, the inlet gas velocity and the equivalence ratio were discussed, and their influences on the distributions of temperature and species in the alumina foam and on H2 yield, CH4 conversion, H2 selectivity and CO selectivity were analyzed in detail. The results show that the combustion wave velocity increases with the increase of equivalence ratio or inlet gas velocity. The H2 yield exceeded 50% with equivalence ratio between 2.0 and 3.0 and combustion wave velocity larger than 0.4 mm/s. The H2 selectivity exceeded 50% with equivalence ratio larger than 2.0 and CO selectivity exceeded 80% with equivalence ratio between 1.8 and 2.0 and combustion wave velocity larger than 0.4 mm/s. | ZHAO PingHui, YE TaoHong, ZHU MinMing, JIANG Hai & CHEN YiLiang Thermal Science & Energy Engineering Department, University of Science & Technology of China, Hefei 230027, China | 2009 | Science China(Technological Sciences)2009，52，10： | 3 |
| 3 | A new compressibility modification k-ε turbulence model with shock unsteadiness effect显示文摘A new compressibility modification k-ε model,including shock unsteadiness effect and the previous compressibility modification of pressure dilatation and dilatational dissipation rate,was developed with a simple formulation for numerical simulation in supersonic complex turbulent flows.The shock unsteadiness effect was modeled by inhibiting turbulent kinetic energy production in the governing equations of turbulent kinetic energy and the turbulent kinetic energy dissipation rate.Sarkar's correction models were employed accounting for the dilatational compressibility effects in the new model.Two types of flows,the free supersonic mixing layers and complex supersonic flow with transverse injection were simulated with different flow conditions.Comparisons with experimental data of the free supersonic mixing layers showed that the new compressibility modification k-ε model significantly inhibited the excessive growth of turbulent kinetic energy and improved predictions.On the supersonic mixing layer flows,prediction results with the new model were in close agreement with experimental data,accurately predicting the decreasing trend of the mixing layer spreading rate with the increase of the convective Mach number.Due to the complicated flow field with flow separation,shock unsteadiness modification inhibited excessive growth of the turbulent kinetic energy in shock regions and wider shock regions are predicted,thereby significantly improving results of the flow with a strong separation forecast.The flow separation was stronger,which was the primary modification effect of the new model.Predictions accord with experimental results even in strong separation flows. | HAN XingSi YE TaoHong ZHU MinMing CHEN YiLiang | 2008 | Chinese Science Bulletin2008，53，24： | 2 |
| 4 | Large eddy simulation of turbulent premixed piloted flame using artificial thickened flame model coupled with tabulated chemistry显示文摘A sub-grid scale(SGS) combustion model, which combines the artificial thickened flame(ATF) model with the flamelet generated manifold(FGM) tabulation method, is proposed. Based on the analysis of laminar flame structures, two self-contained flame sensors are used to track the diffusion and reaction processes with different spatial scales in the flame front, respectively. The dynamic formulation for the proposed SGS combustion model is also performed. Large eddy simulations(LESs) of Bunsen flame F3 are used to evaluate the different SGS combustion models. The results show that the proposed SGS model has the ability in predicting the distributions of temperature and velocity reasonably, while the predictions for the distributions of some species need further improvement. The snapshots of instantaneous normalized progress variables reveal that the flame is more remarkably and severely wrinkled at the flame tip for flame F3.More satisfactory results obtained by the dynamic model indicate that it can preserve the premixed flame propagation characteristics better. | Zhou YU Hongda ZHANG Taohong YE Minming ZHU | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，9： | 1 |
| 5 | Large eddy simulation of turbulent premixed and stratified combustion using flame surface density model coupled with tabulation method显示文摘Large eddy simulations(LESs) are performed to investigate the Cambridge premixed and stratified flames, SwB1 and SwB5, respectively. The flame surface density(FSD) model incorporated with two different wrinkling factor models, i.e., the Muppala and Charlette2 wrinkling factor models, is used to describe combustion/turbulence interaction, and the flamelet generated manifolds(FGM) method is employed to determine major scalars. This coupled sub-grid scale(SGS) combustion model is named as the FSD-FGM model. The FGM method can provide the detailed species in the flame which cannot be obtained from the origin FSD model. The LES results show that the FSD-FGM model has the ability of describing flame propagation, especially for stratified flames. The Charlette2 wrinkling factor model performs better than the Muppala wrinkling factor model in predicting the flame surface area change by the turbulence.The combustion characteristics are analyzed in detail by the flame index and probability distributions of the equivalence ratio and the orientation angle, which confirms that for the investigated stratified flame, the dominant combustion modes in the upstream and downstream regions are the premixed mode and the back-supported mode, respectively. | Zhou YU Hongda ZHANG Taohong YE Minming ZHU | 2018 | Applied Mathematics and Mechanics(English Edition)2018，39，12： | 1 |
| 6 | Integrated production planning and scheduling on automobile assembly lines 显示文摘 | Yah Hongsen Xia Qifeng Zhu Minm | 2003 | IIE Transactions2003，35，： | 1 |
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