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| 1 | Slope stability analysis under seismic load by vector sum analysis method显示文摘The vibration characteristics and dynamic responses of rock and soil under seismic load can be estimated with dynamic finite element method(DFEM).Combining with the DFEM,the vector sum analysis method(VSAM) is employed in seismic stability analysis of a slope in this paper.Different from other conventional methods,the VSAM is proposed based on the vector characteristic of force and current stress state of the slope.The dynamic stress state of the slope at any moment under seismic load can be obtained by the DFEM,thus the factor of safety of the slope at any moment during earthquake can be easily obtained with the VSAM in consideration of the DFEM.Then,the global stability of the slope can be estimated on the basis of time-history curve of factor of safety and reliability theory.The VSAM is applied to a homogeneous slope under seismic load.The factor of safety of the slope is 1.30 under gravity only and the dynamic factor of safety under seismic load is 1.21.The calculating results show that the dynamic characteristics and stability state of the slope with input ground motion can be actually analyzed.It is believed that the VSAM is a feasible and practical approach to estimate the dynamic stability of slopes under seismic load. | Mingwei Guo Xiurun Ge Shuilin Wang | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，3： | 14 |
| 2 | Transient response of Reynolds stress transport to opposition control in turbulent channel flow显示文摘The mechanism for turbulence suppression by opposition control developed by Choi is studied via the analysis of Reynolds stress transport in the initial period of control.It is found that the pressure-strain and pressure-diffusion terms first break up the balance in vertical normal Reynolds stress transport,and result in the final global suppression of turbulence intensities.The transient growth in spanwise normal Reynolds stress is also caused by the pressure-strain term. | GE MingWei XU ChunXiao CUI GuiXiang | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，2： | 6 |
| 3 | Active control of turbulence for drag reduction based on the detection of near-wall streamwise vortices by wall information显示文摘The spatial relations between the measurable wall quantities(streamwise shear stress τwx, spanwise shear stress τwz, and pressure fluctuation p w) and the near-wall streamwise vortices(NWSV) are investigated via direct numerical simulation(DNS) databases of fully developed turbulent channel flow at a low Reynolds number. In the standard turbulent channel flow, the results show that all the wall measurable variables are closely associated with the NWSV.Butafterapplyingastochasticinterference,therelationbased on τwx breaks down while the correlations based on p wandτwz are still robust. Hence, two wall flow quantities based on p wand τwz are proposed to detect the NWSV. As an application, two new control schemes are developed to suppress the near-wall vortical structures using the actuation of wall blowing/suction and obtain 16 % and 11 % drag reduction,respectively. | Mingwei Ge Chunxiao Xu Gui-Xiang Cui | 2015 | Acta Mechanica Sinica2015，31，4： | 4 |
| 4 | Applying resolved-scale linearly forced isotropic turbulence in rational subgrid-scale modeling显示文摘In previous attempts of rational subgrid-scale (SGS) modeling by employing the Kolmogorov equation of filtered (KEF) quantities, it was necessary to assume that the resolved-scale second-order structure function is stationary. Forced isotropic turbulence is often used as a framework for establishing and validating such SGS models based on stationary restrictions, for it generates statistical stationary samples. However, traditional forcing method at low wavenumbers cannot provide an analytic form of forcing term for a complete KEF in physical space, which has been illustrated to be essential in the modeling of such SGS models. Thus, an alternative forcing method giving an analytic forcing term in physical space is needed for rational SGS modeling. Giving an analytic linear driving term in physical space, linearly forced isotropic turbulence should be considered an ideal theoretical framework for rational SGS modeling. In this paper, we demonstrate the feasibility of establishing a rational SGS model with stationary restriction based on linearly forced isotropic turbulence. The performance of this rational SGS model is validated. We, therefore, propose the use of linearly forced isotropic turbulence as a complement to free-decaying isotropic turbulence and low-wavenumber forced isotropic turbulence for SGS model validations. | Chuhan Wang Mingwei Ge | 2019 | Acta Mechanica Sinica2019，35，3： | 3 |
| 5 | Effects of a rooftop wind turbine on the dispersion of air pollutant behind a cube-shaped building显示文摘The concentration distribution of urban air pollutants is closely related to people’s health.As an important utilization form of urban wind power,rooftop wind turbines have been widely used in cities.The wake effect of the rooftop wind turbines will change the flow behind buildings and then affect the pollutant dispersion.To this end,the pollutant dispersion behind the building is studied via the computational fluid dynamics method.The actuator disk model and idealized cube are adopted to model the wind turbine and the building,respectively.The study shows that the rooftop wind turbine can reduce the pollutant mass fraction near the ground and the pedestrian level.Due to the wake effect of the rooftop wind turbine,the turbulent fluctuation behind the building is weakened,and the spanwise pollutant dispersion is suppressed.Besides,the rooftop wind turbine weakens the downwash movement of the building,which enhances the vertical pollutant dispersion. | Shuaibin Zhang Haoze Yang Bowen Du Mingwei Ge | 2021 | Theoretical & Applied Mechanics Letters2021，11，5： | 1 |
| 6 | Ultra-thin layer structured anodes for highly durable Iow-Pt direct formic acid fuel cells显示文摘 | RongyueWang Jianguo Liu Pan Liu Xuanxuan Bi Xiuling Yan Wenxin Wang Yifei Meng Xingbo Ge Mingwei Chen Yi Ding | 2014 | Nano Research2014，7，11： | 1 |
| 7 | Preparation of a novel BN/SiC composite porous structure显示文摘 | SHEN Zhixun GE Min CHEN Mingwei | 2012 | Ceramics International2012，38，7： | 1 |
| 8 | Response of turbulent enstrophy to sudden implementation of spanwise wall oscillation in channel flow显示文摘The response of turbulent enstrophy to a sudden implementation of spanwise wall oscillation(SWO) is studied in a turbulent channel flow via direct numerical simulation. In the beginning of the application of SWO, a significant correlation is formed between ω′yand ω′z. A transient growth of turbulent enstrophy occurs, which directly enhances turbulent dissipation and drifts the turbulent flow towards a new lower-drag condition. Afterwards, the terms related to the stretching of vorticity(ωx, ω′y, and ωz),the inclination of ω′yby ?w/?y, the turn of z by ?v′/?z, and the horizontal shear of z by ?w′/?x are suppressed due to the presence of SWO, leading to attenuation of the turbulent enstrophy. | Mingwei GE Guodong JIN | 2017 | Applied Mathematics and Mechanics(English Edition)2017，38，8： | 0 |
| 9 | Discovery of a potent and selective cell division cycle 7 inhibitor from 6-(3-fluoropyridin4-yl)thieno[3,2-d]pyrimidin-4(3H)-one derivatives as an orally active antitumor agent显示文摘To the Editor:Kinase cell division cycle 7(CDC7),a cell division cycle protein,takes a vital role in mediating DNA replication1.CDC7 complexes in the nucleus can phosphorylate the minichromosome maintenance complex(MCM)family members that bind to chromosomes.In addition,CDC7 kinase,as a molecular switch regulating DNA replication,can mediate DNA damage signaling pathways to stimulate cell cycle termination as well as DNA replication2.Studies have shown that CDC7 is overexpressed in many types of cancer cells,and its overexpression was related to poor patient survival,tumor grade,genetic instability,aneuploidy and so on3.Therefore,CDC7 is a promising target for antitumor therapy. | Mingwei Fu Min Ge Wanxiang Yang Chunchen Hu Xiaowei Li Yuanjiang Wang Shaohua Gou | 2024 | Acta Pharmaceutica Sinica B2024，14，2： | 0 |
| 10 | Spatial relation between fluctuating wall pressure and near-wall streamwise vortices in wall bounded turbulent flow显示文摘A new view of the spatial relation between fluctuating wall pressure and near-wall streamwise vortices(NWSV) is proposed for wall bounded turbulent flow by use of the direct numerical simulation(DNS) database. The results show that the wall region with low pressure forms just below the strong NWSV, which is mostly associated with the overhead NWSV. The wall region with high pressure forms downstream of the NWSV, which has a good correspondence with the downwash of the fluids induced by the upstream NWSV. The results provide a significant basis for the detection of NWSV. | Mingwei GE Yingtao ZUO Ying DENG Yuhua LI | 2015 | Applied Mathematics and Mechanics(English Edition)2015，36，6： | 0 |
| 11 | Multiple Hydrogen Bond-Induced Structural Distortion for Broadband White-Light Emission in Two-Dimensional Perovskites显示文摘Low-dimensional hybrid lead-halide perovskites with broadband white-light emission upon near-UV excitation have attracted immense scientific interest due to their potential application for the next generation of solid-state lighting as well as scintillators for radiation detection.Recently,broadband emission material is mostly reported in structural distorted perovskites.However,it is still unclear how to generate structural distortion in low-dimensional perovskites. | Xiaoting Liu Ziqi Yang Chengda Ge Hanming Li Mingwei Hao Chenlian Wan Yilong Song Bao Li Qingfeng Dong | 2021 | CCS Chemistry2021，3，10： | 0 |
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