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Guo, Leicheng (author), Su, Ni (author), Townend, Ian (author), Wang, Z.B. (author), Zhu, C. (author), Wang, Xianye (author), Zhang, Yuning (author), He, Qing (author)
Many large rivers in the world delivers decreasing sediment loads to coastal oceans owing to reductions in sediment yield and disrupted sediment deliver. Understanding the sediment load regime is a prerequisite of sediment management and fluvial and deltaic ecosystem restoration. This work examines sediment load changes across the Changjiang...
review 2019
document
Guo, Y. (author), Markine, V.L. (author), Zhang, X. (author), Qiang, Weile (author), Jing, Guoquig (author)
The performance and deformation of ballast bed are significantly influenced by the particle morphology (size and shape), the rheology (translation and rotation), and the degradation (breakage and abrasion). Regarding the ballast particle morphology, the ballast particle size is generally measured by sieving and described with the Particle Size...
review 2019
document
Guo, Y. (author), Markine, V.L. (author), Qiang, Weile (author), Zhang, Hui (author), Jing, Guoqing (author)
Higher speed, more freight and frequent maintenance increase ballast degradation and reduce the ballast lifespan. To reduce ballast degradation, crumb rubber used as buffering aggregates in ballast bed is relatively unexplored and needs more studies, because using it has the advantage of reusing the waster rubber and absorbing the noises. The...
journal article 2019
document
Ge, W. (author), Jiao, Yutie (author), Sun, Heqiang (author), Li, Zongkun (author), Zhang, Hexiang (author), Zheng, Yan (author), Guo, Xinyan (author), Zhang, Zhaosheng (author), van Gelder, P.H.A.J.M. (author)
Dam breach has catastrophic consequences for human lives and economy. In previous studies, empirical models are often, to a limited extent, due to the inadequacy of historical dam breach events. Physical models, which focus on simulating human behavior during floods, are not suitable for fast analysis of a large number of dams due to the...
journal article 2019
document
Cai, Huayang (author), Savenije, H.H.G. (author), Garel, Erwan (author), Zhang, Xianyi (author), Guo, Leicheng (author), Zhang, Min (author), Liu, Feng (author), Yang, Qingshu (author)
As a tide propagates into the estuary, river discharge affects tidal damping, primarily via a friction term, attenuating tidal motion by increasing the quadratic velocity in the numerator, while reducing the effective friction by increasing the water depth in the denominator. For the first time, we demonstrate a third effect of river discharge...
journal article 2019
document
Shi, Can (author), Zhao, Chunfa (author), Zhang, Xu (author), Guo, Y. (author)
This paper presents a multi-layer railway ballast track and substructure model, where a coupled discrete and continuous method is used for macro-meso dynamic behaviour analysis under moving wheel loads. In this coupled model, the discrete element method (DEM) is utilised to build the superstructure of the ballast track (i.e. rail, fastener,...
journal article 2020
document
Wang, Yiming (author), Xu, Zhi (author), Lovrak, M. (author), le Sage, V.A.A. (author), Zhang, K. (author), Guo, Xuhong (author), Eelkema, R. (author), Mendes, E. (author), van Esch, J.H. (author)
Supramolecular structures with strain-stiffening properties are ubiquitous in nature but remain rare in the lab. Herein, we report on strain-stiffening supramolecular hydrogels that are entirely produced through the self-assembly of synthetic molecular gelators. The involved gelators self-assemble into semi-flexible fibers, which thereby...
journal article 2020
document
Tao, Y. (author), Ersahin, M.E. (author), Ghasimi, S.M.D. (author), Ozgun, H. (author), Wang, H. (author), Zhang, X. (author), Guo, Miao (author), Yang, Yunfeng (author), Stuckey, David C. (author), van Lier, J.B. (author)
Anaerobic digestion (AD) has been commercially operated worldwide in full scale as a resource recovery technology underpinning a circular economy. However, problems such as a long start-up time, or system instability, have been reported in response to operational shocks. These issues are usually linked to the dynamics of the functional...
journal article 2020
document
Zhang, J. (author), Guo, Y. (author)
The purpose of this paper is to investigate the highly complex interaction between turbulent flow and deep-sea marina structure using a commercial CFD code (FLUENT 6.2) with Large Eddy Simulation (LES) approach. A series of three-dimensional LES of wake flows past overlapping cylinder of finite height are carried out with a range of Reynolds...
conference paper 2006
document
Guo, Y. (author), Zhang, L. (author), Zhang, J. (author)
This paper reports the results from a turbulent numerical modelling study on the free overfall in a rectangular channel. A wide range of model parameters (i.e. discrete square bar bed roughness, channel slope, and incoming upstream Froude number) is investigated. The water surface profiles, velocity fields and end-depth are simulated and...
conference paper 2006
document
Zhu, Feida (author), Zhang, Yongfeng (author), Yorke-Smith, N. (author), Guo, Guibing (author), Chen, Xu (author)
Recommendation system has became an important component in many real applications, ranging from e-commerce, music app to video-sharing site and on-line book store. The key of a successful recommendation system lies in the accurate user/item profiling. With the advent of web 2.0, quite a lot of multimodal information has been accumulated,...
abstract 2018
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