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| 1 | Detached-eddy Simulation for Time-dependent Turbulent Cavitating Flows显示文摘The Reynolds-averaged Navier-Stokes(RANS),such as the original k-ω two-equation closures,have been very popular in providing good prediction for a wide variety of flows with presently available computational resource.But for cavitating flows,the above equations noticeably over-predict turbulent production and hence effective viscosity.In this paper,the detached eddy simulation(DES) method for time-dependent turbulent cavitating flows is investigated.To assess the state-of-the-art of computational capabilities,different turbulence models including the widely used RANS model and DES model are conducted.Firstly,in order to investigate the grid dependency in computations,different grid sizes are adopted in the computation.Furthermore,the credibility of DES model is supported by the unsteady cavitating flows over a 2D hydrofoil.The results show that the DES model can effectively reduce the eddy viscosities.From the experimental validations regarding the force analysis,frequency and the unsteady cavity visualizations,more favorable agreement with experimental visualizations and measurements are obtained by DES model.DES model is better able to capture unsteady phenomena including cavity length and the resulting hydrodynamic characteristics,reproduces the time-averaged velocity quantitatively around the hydrofoil,and yields more acceptable and unsteady dynamics features.The DES model has shown to be effective in improving the overall predictive capability of unsteady cavitating flows. | HUANG Biao WANG Guoyu YU Zhiyi SHI Shuguo | 2012 | Chinese Journal of Mechanical Engineering2012，25，3： | 10 |
| 2 | Beneficial impact of crocetin, a carotenoid from saffron, on insulin sensitivity in fructose-fed rats显示文摘 | Liang Xi Zhiyu Qian Guanglin Xu Shuguo Zheng Sai Sun Na Wen Liang Sheng Yun Shi Yabing Zhang | 2007 | The Journal of Nutritional Biochemistry2007，，1： | 1 |
| 3 | Evolution of Surface Cold Patches in the North Yellow Sea Based on Satellite SST Data显示文摘Ten years(from 2005 to 2014) of satellite sea surface temperature(SST) data from the Advanced Very High Resolution Radiometer(AVHRR) are analyzed to reveal the monthly changes in surface cold patches(SCPs) in the main areas of the Northern Yellow Sea(NYS). The Canny edge detection algorithm is used to identify the edges of the patches. The monthly changes are described in terms of location, temperature and area. The inter-annual variations, including changes in the location and area of the SCPs from 2010 to 2014, are briefly discussed. The formation mechanisms of the SCPs in different periods are systematically analyzed using both in situ data and numerical simulation. The results show that from May to October, the location and area of the SCPs remain stable, with a north-south orientation. The SCPs altogether cover about 1? of longitude(124?E–125?E) in width and 2? of latitude(37.5?N–39.5?N) in length. In November, the SCP separates from the Jangsan Cape and forms a closed, isolated, and approximately circular cold patch in the central NYS. From May to October, the upwelling that leads to the formation of the SCP is mainly triggered by the headland residual current, wind field, climbing movement of the current and secondary circulation at the tide front. In November, cyclonic circulation in the NYS is primarily responsible for generating the upwelling that leads to the formation of the closed and isolated SCP. | HU Jingwen SHI Maochong ZHANG Tinglu CHEN Shuguo WU Lunyu | 2016 | Journal of Ocean University of China2016，15，6： | 0 |
| 4 | A Hierarchical Cluster Analysis of Low-Latitude Pc3-4 MHD Waves显示文摘0IntroductionItisgeneralyconsideredthattheexcitingsourceoflow-latitudePc3-4MHDwavesismainlytheup-streamcompressionalwaveprodu... | Zhao Zhengyu Shi Xinqing Xie Shuguo | 1999 | Wuhan University Journal of Natural Sciences1999，4，1： | 0 |
| 5 | Polarization Measurement of Auroral Kilometric Radiation by INTERBALL-2 Satellite显示文摘0IntroductionAplasmaintheearth'smagneticfieldBosup-portsavarietyofplasmawaves.Thesewavescanbeclassifiedconvenientlyintermsoft... | Zhao, Zhengyu Xie, Shuguo Shi, Xinqing Lefeuvre, F. | 1999 | Wuhan University Journal of Natural Sciences1999，4，1： | 0 |
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