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Effects of pore water-rock reaction on heat extraction from the karst geothermal reservoirs: Based on the dual media model

Ji, Jiayan (author), Song, Xianzhi (author), Yi, Junlin (author), Song, G. (author), Wang, Gaosheng (author)

Fractures and caves are the main flow and storage channels for the karst geothermal reservoirs, and the water-rock reaction within them significantly affects the thermal performance. Most previous studies concentrated on the fractures, disregarding the impact of the pore water-rock reaction. The objective of this study is to explore the...

journal article 2024

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Generalized Model and Deep Reinforcement Learning-Based Evolutionary Method for Multitype Satellite Observation Scheduling

Song, Yanjie (author), Ou, Junwei (author), Pedrycz, Witold (author), Suganthan, Ponnuthurai Nagaratnam (author), Wang, X. (author), Xing, Lining (author), Zhang, Yue (author)

Multitype satellite observation, including optical observation satellites, synthetic aperture radar (SAR) satellites, and electromagnetic satellites, has become an important direction in integrated satellite applications due to its ability to cope with various complex situations. In the multitype satellite observation scheduling problem ...

journal article 2024

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CCTR: Calibrating Trajectory Prediction for Uncertainty-Aware Motion Planning in Autonomous Driving

Cao, Chengtai (author), Chen, Xinhong (author), Wang, J. (author), Song, Q. (author), Tan, Rui (author), Li, Yung Hui (author)

Autonomous driving systems rely on precise trajectory prediction for safe and efficient motion planning. Despite considerable efforts to enhance prediction accuracy, inherent uncertainties persist due to data noise and incomplete observations. Many strategies entail formalizing prediction outcomes into distributions and utilizing variance to...

journal article 2024

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Analysis of Injury Severity of Drivers Involved Different Types of Two-Vehicle Crashes Using Random-Parameters Logit Models with Heterogeneity in Means and Variances

Wu, Qiang (author), Song, Dongdong (author), Wang, Chenzhu (author), Chen, Fei (author), Cheng, Jianchuan (author), Easa, Said M. (author), Yang, Y. (author), Yang, Wenchen (author)

This study proposes random-parameters multinomial logit models, with heterogeneity in means and variances, to explore the differences in the factors influencing injury severities of drivers involved in different types of two-vehicle crashes. The models are verified using crash data from the United Kingdom (UK) over three years (2016–2018). Three...

journal article 2023

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Surrogate modelling of railway pantograph-catenary interaction using deep Long-Short-Term-Memory neural networks

Song, Yang (author), Wang, H. (author), Frøseth, Gunnstein (author), Nåvik, Petter (author), Liu, Zhigang (author), Rønnquist, Anders (author)

The interaction performance of the pantograph-catenary is of great importance as it directly determines the current collection quality and operational safety of trains. The finite element method (FEM) is dominantly used for simulating pantograph-catenary interaction, which is normally computationally heavy. In this work, addressing the...

journal article 2023

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The magnitudes of multi-physics effects on geothermal reservoir characteristics during the production of enhanced geothermal system

Song, G. (author), Shi, Yu (author), Xu, Fuqiang (author), Song, Xianzhi (author), Li, Gensheng (author), Wang, Gaosheng (author), Lv, Zehao (author)

The multi-physics coupling process during the heat extraction from enhanced geothermal system, encompassing thermo(T)-hydro(H)-mechanical(M)-chemical(C) interactions, plays a pivotal role in changing geothermal reservoir characteristics. However, a comprehensive quantitative assessment of these multi-physics behaviors has been lacking. In...

journal article 2023

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Surrogate models of heat transfer in fractured rock and their use in parameter estimation

Song, G. (author), Roubinet, Delphine (author), Wang, Xiaoguang (author), Li, Gensheng (author), Song, Xianzhi (author), Tartakovsky, Daniel M. (author)

Fracture distribution plays a significant role in the behavior of subsurface environments, affecting such activities as geothermal production, exploitation and management of groundwater resources, and long-term storage of nuclear waste and carbon dioxide. A key challenge in these and other applications is to estimate the fracture network...

journal article 2023

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Estimating intercity heavy truck mobility flows using the deep gravity framework

Yang, Y. (author), Jia, Bin (author), Yan, Xiao Yong (author), Chen, Yan (author), Song, Dongdong (author), Zhi, Danyue (author), Wang, Y. (author), Gao, Ziyou (author)

Accurate estimation of intercity heavy truck mobility flows is of vital importance to urban planning, transportation management and logistics operations. The inaccessibility of big data related to intercity transport systems and the heterogeneity of trucking activities pose challenges for the reliable estimation. Recently, the advance of...

journal article 2023

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Geographical spatial analysis and risk prediction based on machine learning for maritime traffic accidents: A case study of Fujian sea area

Yang, Yang (author), Shao, Zheping (author), Hu, Yu (author), Mei, Qiang (author), Pan, Jiacai (author), Song, R. (author), Wang, Peng (author)

Safety analysis according to the spatial distribution characteristics of maritime traffic accidents is critical to maritime traffic safety management. An accident analysis framework based on the geographic information system (GIS) is proposed to characterize the spatial distribution of maritime traffic accidents occurring in the Fujian sea area...

journal article 2022

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Planning and developing a high-speed railway new town under state entrepreneurialism in China

Wang, B. (author), de Jong, Martin (author), van Bueren, Ellen (author), Ersoy, A. (author), Song, Yun (author)

The development of high-speed railway (HSR) new towns in China represents a new phase of suburbanization and has had a significant impact on urban expansion, but not all of its mechanisms and drivers have been studied. This article aims to understand the booming development of HSR new towns in China through the theoretical lens of state...

journal article 2022

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Dreaming the wrong dream: An exploratory case study of a policy change toward sustainable urban development in a medium-sized Chinese city

Song, Y. (author), de Jong, W.M. (author), Stead, D. (author), Yang, Wei (author), Wang, B. (author)

Sustainable urban transformation has become a mantra for Chinese cities. While most studies focus on sustainable urbanization in megacities, the far larger number of medium-sized cities is understudied, although the latter face more severe urban problems. This article develops a framework for examining policy change in sustainable urban...

journal article 2022

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Safety-oriented planning of expressway truck service areas based on driver demand

Ding, Wenlong (author), Wang, Y. (author), Chu, Pengzi (author), Chen, Feng (author), Song, Yongchao (author), Zhang, Ning (author), Lin, Dong (author)

The rapid development of the economy has promoted the growth of freight transportation. The truck service areas on expressways, as the main places for truck drivers to rest, play an important role in ensuring the driving safety of trucks. If these service areas are constructed densely or provide a plentiful supply of parking areas, they are...

journal article 2022

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A Response Spectrum Analysis of Wind Deflection in Railway Overhead Contact Lines Using Pseudo-Excitation Method

Song, Yang (author), Zhang, Mingjie (author), Wang, H. (author)

The wind deflection of overhead contact lines (OCLs) challenges the stable and safe operation of electrified railways. The steady wind causes the static deflection of the contact line, while the fluctuating wind leads to the OCL buffeting. This paper performs a response spectrum analysis of the wind deflection caused by the combined effects...

journal article 2021

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Short-circuit characteristics of superconducting permanent magnet generators for 10 MW wind turbines

Liu, Dong (author), Song, Xiaowei (author), Wang, X. (author), Elhindi, Mohamed (author), Hasanov, Urfan (author), Gou, Xiaofan (author), Ye, Changqing (author)

Superconducting permanent magnet generators (SCPMGs) are a potential candidate for 10 MW direct-drive wind turbine applications. This paper presents two 10 MW SCPMG designs using MgB<sub>2</sub> cables for the armature winding and investigates the short-circuit characteristics of the designed SCPMGs. The first part...

journal article 2021

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An Investigation on the Current Collection Quality of Railway Pantograph-catenary Systems with Contact Wire Wear Degradations

Song, Yang (author), Wang, H. (author), Liu, Zhigang (author)

In railway pantograph-catenary systems, the contact surfaces undergo wear in long-term operations, directly affecting interaction performance and potentially deteriorating the current collection quality. The effect of contact wire wear (CWW) on the current collection quality should be evaluated to understand the system's health status in...

journal article 2021

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Fan-Out Panel-Level PCB-Embedded SiC Power MOSFETs Packaging

Hou, F. (author), Wang, Qidong (author), Chen, Min (author), Zhang, Kouchi (author), Ferreira, Jan Abraham (author), Wang, Wenbo (author), Ma, R. (author), Su, Meiying (author), Song, Yang (author)

In this article, a novel fan-out panel-level printed circuit board (PCB)-embedded package for phase-leg silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) power module is presented. Electro-thermo-mechanical co-design was conducted, and the maximum package parasitic inductance was found to be about 1.24 nH at 100...

journal article 2020

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Design of 3D Wireless Power Transfer System Based on 3D Printed Electronics

Hou, T. (author), Xu, J. (author), Elkhuizen, W.S. (author), Wang, C.C. (author), Jiang, Jiehui (author), Geraedts, Jo M.P. (author), Song, Y. (author)

2D coil design limits the use of wireless power transfer (WPT) in many products with freeform outer shapes. In this paper, enabled by 3D printed electronics, we propose a systematic approach to design and fabricate 3D coils for WPT. Based on the circular spiral and rectangular spiral patterns, 3D receiver and transmitter coils can be...

journal article 2019

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Synthesis of stable and low-Co2 selective Ɛ-iron carbide Fischer-Tropsch catalysts

Wang, Peng (author), Chen, Wei (author), Chiang, Fu-Kuo (author), Dugulan, A.I. (author), Song, Yuanjun (author), Pestman, Robert (author), Zhang, Kui (author), Yao, Jinsong (author), Feng, Bo (author), Miao, Ping (author), Xu, Wayne (author), Hensen, Emiel J.M. (author)

journal article 2018

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Analysis of the evolvement of contact wire wear irregularity in railway catenary based on historical data

Wang, H. (author), Nunez, Alfredo (author), Liu, Zhigang (author), Song, Yang (author), Duan, Fuchuan (author), Dollevoet, R.P.B.J. (author)

This paper studies the evolvement of the wear irregularity of contact wire using wire thickness data measured yearly from a section of railway catenary. The power spectral density and time–frequency representation based on the wavelet transform are employed for data analysis, with an emphasis on local wear irregularities that are crucial for...

journal article 2017

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The Improvement of Oxidation Resistance of a Re-Based Diffusion Barrier/Ni–Al Coating on the Single-Crystal Ni-Based TMS-82+ Superalloy

Wu, Y. (author), Wang, Y.M. (author), Song, G.M. (author), Li, X.W. (author)

Oxidation behavior of a Re-based diffusion barrier/Ni–Al coated single-crystal (SC) Ni-based TMS-82+ superalloy was studied to compare with those of the base and Ni–Al coated superalloys under cyclic air at 1150 °C for 200 h. The base superalloy showed a negative mass gain due to extensive oxide spallation, and the Ni–Al coated superalloy...

journal article 2011