中国科学院机构知识库网格系统: 检索

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	An Explicit Algebraic Stress-Based Delayed Detached Eddy Simulation Model for Turbulent Flows 期刊论文 OAI收割 AIAA JOURNAL, 2024, 页码: 12 作者: Liu HC(刘昊辰); Zhang XL(张鑫磊); Yin,Zifei; He GW(何国威) \| 收藏 \| 浏览/下载：38/0 \| 提交时间：2025/01/06 Computational Fluid Dynamics Detached Eddy Simulation Algebraic Reynolds Stress Model Turbulence Models Separated Flows Turbulent Boundary Layer
	Transport vibration analysis of mobile liquid Pb-Bi micro-reactors with non-uniform mass distribution 期刊论文 OAI收割 NUCLEAR ENGINEERING AND DESIGN, 2023, 卷号: 414 作者: Fan, Tiandi; Zhang, Yong; Yang, Guowei; Song, Yong; Jiang, Jieqiong \| 收藏 \| 浏览/下载：69/0 \| 提交时间：2023/11/17 Mobile micro-reactor Separated model Road transportation Vibration response Dynamics analysis
	IDDES method based on differential Reynolds-stress model and its application in bluff body turbulent flows 期刊论文 OAI收割 AEROSPACE SCIENCE AND TECHNOLOGY, 2021, 卷号: 119, 页码: 13 作者: Wang, Gang; Li, Quanzheng; Liu, Yi \| 收藏 \| 浏览/下载：70/0 \| 提交时间：2022/06/11 Detached-eddy simulation Reynolds-stress model Massively separated flows Tandem cylinders Launch vehicle Transonic buffet
	Synchronous X-ray/Optical QPOs from the Black Hole LMXB MAXI J1820+070 期刊论文 OAI收割 Monthly Notices of the Royal Astronomical Society, 2021 作者: HXMT \| 收藏 \| 浏览/下载：95/0 \| 提交时间：2022/02/08 black hole physics Low Mass X-ray Binaries accretion accretion discs stars: individual (MAXI J1820+070) Astrophysics - High Energy Astrophysical Phenomena Abstract: We present high-speed optical photometry from SAAO and SALT on the black hole LMXB MAXI J1820+070 (ASSASN-18ey), some of it simultaneous with NICER, Swift and Insight-HXMT X-ray coverage. We detect optical Quasi-Periodic Oscillations (QPOs) that move to higher frequencies as the outburst progresses, tracking both the frequency and evolution of similar X-ray QPOs previously reported. Correlated X-ray/optical data reveal a complex pattern of lags, including an anti-correlation and a sub-second lag that evolve over the first few weeks of outburst. They also show correlated components separated by a lag equal to the QPO period roughly centered on zero lag, implying that the inter-band variability is strongly and consistently affected by these QPOs at a constant phase lag of roughly ±Ю The synchronisation of X-ray and optical QPOs indicates that they must be produced in regions physically very close to each other we thus propose that they can be explained by a precessing jet model, based on analogies with V404 Cyg and MAXI J1348-630.
	Asynchronous fracture of hierarchical microstructures in hard domain of thermoplastic polyurethane elastomer: Effect of chain extender 期刊论文 OAI收割 POLYMER, 2018, 卷号: 138, 页码: 242-254 作者: Li, Xing \| 收藏 \| 浏览/下载：51/0 \| 提交时间：2018/12/04 Diisocyanate-based Polyurethanes Microphase-separated Structure Hydrogen-bonding Properties X-ray-diffraction Block-copolymers Mechanical-properties Property Relationships Toluene Diisocyanate Model Compounds Behavior
	Random vibration analysis on the support of strapdown inertial navigation system (EI CONFERENCE) 会议论文 OAI收割 2nd Annual Conference on Electrical and Control Engineering, ICECE 2011, September 16, 2011 - September 18, 2011, Yichang, China 作者: Li M. 收藏 \| 浏览/下载：53/0 \| 提交时间：2013/03/25 Vibration of the support is an important factor to the accuracy of strapdown inertial navigation. To get vibration characteristics of the support FEM model of the support was created with Ansys and then response characteristics were analyzed on the support under the separated random loads during carrier flight including the phases of subsonic and subsonic. To validate the analysis method wide band random vibration test was done on the points of the support which are used for mounting inertial instruments. The comparison of the analysis and the test data shows that the relative error of analysis result is not more than 13%. According to the two results the support structure was improved. Finally random vibration analysis was carried out on the improved one. The result shows that the acceleration response was largely reduced than before. This research can be a reference of performance improvement of the strapdown inertial support and navigation system precision. 2011 IEEE.
	Applications of urans on predicting unsteady turbulent separated flows 期刊论文 iSwitch采集 Acta mechanica sinica, 2009, 卷号: 25, 期号: 3, 页码: 319-324 作者: Xu, Jinglei; Ma, Huiyang 收藏 \| 浏览/下载：67/0 \| 提交时间：2019/05/10 Urans Nonlinear eddy viscosity turbulence model Separated flows Circular cylinder
	Real-time restoration for motion-blurred color images by multichannel combination processing (EI CONFERENCE) 会议论文 OAI收割 1st International Workshop on Education Technology and Computer Science, ETCS 2009, March 7, 2009 - March 8, 2009, Wuhan, Hubei, China 作者: Sun H.; Sun H.; Li S. 收藏 \| 浏览/下载：64/0 \| 提交时间：2013/03/25 A fast algorithm is proposed to restore the color images degraded in a deterministic way by motion- blurred by multichannel combination processing. Based on the color space conversion model the point spread functions of the image motion on each plane of YUV422 image can be achieved. The U V plane of YUV422 images are combined to form a new UV plane which has the same size as Y plane. Then the Y UV plane are packed into a two dimensional complex array which can be transformed directly by FFT and result a composite frequency spectrum. Wiener filter is applied to filter Y UV spectrums separated from the composite spectra. On Graphics Processing Unit (GPU) platform the proposed algorithm can restore a 1024x1024 24-bit motion-blurred color image in 7.95ms and the PSNR of the restored image is 27.12 which reveals a good restoration performance. 2009 IEEE.
	Three-dimensional angle measurement based on auto-collimation and moire fringe (EI CONFERENCE) 会议论文 OAI收割 2008 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Applications, November 16, 2008 - November 19, 2008, Beijing, China Cai S.; Liang S.; Qiao Y.-F. 收藏 \| 浏览/下载：55/0 \| 提交时间：2013/03/25 A method for small three-dimensional (3D) angle measurement based on auto-collimation and moire fringe is proposed and analyzed. A right-angle prism is used as the indicator of angle change. The inclined plane indicates the pitch and yaw angles and roll angle in indicated by the rib which is the intersection of two right-angle sides. Pitch and yaw angles measurement are implemented by auto-collimation based on reticule and roll angle measurement is measured based on moire fringe. Roll angle measurement is separated from pitch and yaw by using two light sources with different frequencies. Any small change of pitch and roll angles will induce the shift of the reticule image after reflecting by inclined plane. And any small roll angle will induce a change in moire fringe width that is generated by scale grating image which is reflected by the prism and index grating. The math model of this method is built up and error analysis is presented. The theoretical calculation results show that the proposed method is feasible and can achieve high accuracy. 2009 SPIE.