95,674 research outputs found
Dataset in support of the article "Towards a genuinely stable boundary closure for pentadiagonal compact finite difference schemes"
No full textDataset supporting the plots in the article:
Wu, L. and Kim, J.W. (2024) Towards a genuinely stable boundary closure for pentadiagonal compact finite difference schemes. Journal of Computational Physics, 10.1016/j.jcp.2024.112887
This dataset contains the ASCII data files and the Tecplot data and layout files that were ORIGINALLY produced in the work and used for generating the figures in the publication. The titles of the files are self-explanatory.
Additional related data collected that was not included in the current data package:
Note that data taken from external sources and used for plotting in Fig. 14c, Fig. 15, and Fig. 17 in the publication is not included. If needed, they should be found from their original source – see reference [17] cited in the paper.
Related projects: EPSRC UK Turbulence Consortium (EP/R029326/1)
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Han long jing.
No full text楊筠松撰 ; [伍崇曜輯]Date from preface.框13.1 x 9.1 cm., 9行21字, 黑口, 左右雙邊, 無魚尾, 版心中鐫分冊書名, 下鐫叢書名.Yang Yunsong zhuan ; [Wu Chongyao ji]Kuang 13.1 x 9.1 cm., 9 xing 21 zi, hei kou, zuo you shuang bian, wu yu wei, ban xin zhong juan fen ce shu ming, xia juan cong shu ming
Yi long jing: [3 juan].
No full text楊筠松撰 ; [伍崇曜輯]Date from preface.框13.1 x 9.1 cm., 9行21字, 黑口, 左右雙邊, 無魚尾, 版心中鐫分冊書名, 下鐫叢書名.Yang Yunsong zhuan ; [Wu Chongyao ji]Kuang 13.1 x 9.1 cm., 9 xing 21 zi, hei kou, zuo you shuang bian, wu yu wei, ban xin zhong juan fen ce shu ming, xia juan cong shu ming
Control and Filtering for Discrete Linear Repetitive Processes with H infty and ell 2--ell infty Performance
No full textRepetitive processes are characterized by a series of sweeps, termed passes, through a set of dynamics defined over a finite duration known as the pass length. On each pass an output, termed the pass profile, is produced which acts as a forcing function on, and hence contributes to, the dynamics of the next pass profile. This can lead to oscillations which increase in amplitude in the pass to pass direction and cannot be controlled by standard control laws. Here we give new results on the design of physically based control laws for the sub-class of so-called discrete linear repetitive processes which arise in applications areas such as iterative learning control. The main contribution is to show how control law design can be undertaken within the framework of a general robust filtering problem with guaranteed levels of performance. In particular, we develop algorithms for the design of an H? and dynamic output feedback controller and filter which guarantees that the resulting controlled (filtering error) process, respectively, is stable along the pass and has prescribed disturbance attenuation performance as measured by and – norms
Eugene Wu oral history interview and transcript
No full textThis recording and transcript form part of a collection of oral history interviews conducted by the Chao Center for Asian Studies at Rice University. This collection includes audio recordings and transcripts of interviews with Asian Americans native to or living in Houston.Eugene Wu was born in Guangzhou, Guangdong Province in China in 1 978. Five years later, he moved to Odessa, Texas along with his mother and father. Not long afterward, the Wu family moved to Houston, where Mr. Wu attended various schools in the area. After earning his bachelor’s degree from A&M University, Mr. Wu attended the LBJ School for Public Affairs at the University of Texas at Austin, obtaining his Master’s Degree in Public Policy. Afterward, Mr. Wu earned his Law degree from the South Texas School of Law. In addition to being involved in a variety of community organizations, Mr. Wu currently serves as an attorney in Harris County and is a state representative for District 137
Fa xiang wei yi : Peng Kaidong xian sheng juan zeng wen wu te zhan tu lu /
No full textCatalog of long-term exhibition held at Guo li gu gong bo wu yuan, Taibei, Taiwan
Fan buzz-saw noise under intake flow distortion: a computational study
No full textSteady intake flow distortion due to non-axisymmetric intake geometry and angle of attack of the flight stream can affect various fan tone noise, especially fan buzz-saw noise. In this paper, unsteady CFD simulations have been performed on fully coupled fan and intake models to study the effect of intake flow distortion on fan buzz-saw noise. Three cases have been investigated, namely a baseline case, an axisymmetric distorted case, and a drooped distorted case, and comparisons have been made on the intake noise data extracted from the CFD calculations. The distortion fields generated in the last two cases have been compared and characterised by Fourier-Bessel harmonics. The results show that the distortion generated in the drooped case is more significant and has resulted in stronger circumferential mode scattering appearing initially in the fan domain. The main effect of the distortions in both cases is to cause scattering of the rotor-locked modes into adjacent circumferential harmonics, as the shock waves propagate through the intake ducts.</p
Towards a genuinely stable boundary closure for pentadiagonal compact finite difference schemes
No full textA new optimisation strategy to develop high-order and genuinely stable boundary closure schemes for a pentadiagonal, seven-point stencil, compact finite difference system is proposed. Previous approaches to developing boundary compact schemes often yielded either potential instabilities or non-optimal accuracy in the numerical solutions. In the present optimisation, the numerical accuracy and stability of the compact differencing system are addressed simultaneously by maximising the global accuracy of the system under stability constraints that are enhanced by a non-Dirichlet boundary condition. A unified extrapolation method is proposed to assist in the derivation of boundary schemes. A set of optimised boundary compact schemes is obtained for use along with an existing interior compact scheme. The resultant fourth-order compact finite difference system is applied to flow and acoustic benchmark problems as well as a large-eddy simulation, demonstrating superior performance in numerical stability, accuracy, and spatial resolution
Annual average rainfall and runoff at Wu Long Station.
No full textAnnual average rainfall and runoff at Wu Long Station.</p
Annual sediment discharge at Wu Long Station (1960–2016).
No full textAnnual sediment discharge at Wu Long Station (1960–2016).</p
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