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Numerical Simulation of Storm Surge and Compound Flooding Events in the Minjiang Estuary,China

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Meteorological and Environmental Research 2022年第4期13卷 101-111,115页

作者： yongzhao sun Zhejiang Ocean University Zhoushan 316022China

In this study,a high-resolution storm surge floodplain numerical model was established based on the ADCIRC ocean numerical model,and was used to simulate the storm surge floodplain of typhoon 9608"HERB",and the simulation results of tide level and storm water increase are in good agreement with the observation *** this basis,the influences of runoff,typhoon path,and typhoon intensity on the floodplain submerged area and depth were *** on the measured runoff data,10 sets of sensitivity experiments with runoff sizes ranging from 0 to 2.5 times were set *** experimental results show that the increase of runoff mainly increases the submerged area of the coastal area in the upper reaches of the Minjiang River,but has a small effect on the submerged area of the coastal area in the lower reaches of the Minjiang River and the outer sea *** on the original typhoon path,8 different deflection paths after the typhoon landed were constructed to carry out sensitivity *** results show that the clockwise deflection of typhoon path of 10°-40°to the south will reduce the submerged area,and the counterclockwise deflection of 10°-30°to the north will increase the submerged area,but the counterclockwise deflection of more than 40°to the north will decrease the submerged *** weather systems before and after landing of typhoon center pressure of 955 HPA,935 HPA,and 915 HPA was *** results show that the decrease of typhoon center pressure will significantly increase the submerged area of the entire *** with the air pressure of 975 HPA,the submerged area is increased by about 2 times.

关键词： ADCIRC Storm surge Submerged area Minjiang estuary

World’s first implementation of close-fit pipe jacking of twin tunnels for construction of subway station--Innovation in equipment and construction technology

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Frontiers of Engineering Management 2024年第2期11卷 369-376页

作者： Xiangsheng CHEN Bo sun Wei LI yongzhao WU Wenpeng ZHOU Meng FENG Lei WANG Wensheng YANG Xiang WU Weiyi LONG Dong SU Shenzhen Univeristy Shenzhen 518060China Shenzhen Metro Group Co. Ltd.Shenzhen 518031China Shenzhen Municipal Design&Research Co. Ltd.Shenzhen 518000China Sinohydro Bureau 11 Co. Ltd.Zhengzhou 450001China China Railway Engineering Equipment Group Co. LTD.Zhengzhou 450000China Shenzhen University Shenzhen 518060China

1 Project overview The Shasan station of Phase II of Shenzhen’s urban rail transit Line 12 is situated in Bao’an District,*** comprises a two-level underground island platform station,measuring 212 m in length,and 22.6 m in width,with an overburden thickness of about 7.0 ***.1 illustrates the presence of a large underground reinforced concrete stormwater culvert,measuring 11.5 m by 3.6 m,traversing the station’s center.

关键词： Subway station close-fit pipe jacking of twin tunnels modular rectangular pipe jacking machine Structural Transformation equipment construction

光热电站作为黑启动电源时计及机组恢复效益的运行优化

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电工技术学报 2023年第13期38卷 3486-3498页

作者：孟荣涛李少岩顾雪平刘艳孙永昭华北电力大学电气与电子工程学院保定071003 国网河北省电力有限公司邢台供电分公司邢台054001

聚光太阳能热发电(CSP),又称光热发电,是集储热与产电为一体的可再生能源发电技术,具备良好的运行特性,有望成为服务于电力系统应急恢复的黑启动电源。基于此背景,该文对参与系统机组恢复充当黑启动电源的CSP电站运行优化展开研究。首先... 详细信息

聚光太阳能热发电(CSP),又称光热发电,是集储热与产电为一体的可再生能源发电技术,具备良好的运行特性,有望成为服务于电力系统应急恢复的黑启动电源。基于此背景,该文对参与系统机组恢复充当黑启动电源的CSP电站运行优化展开研究。首先,通过场景分析法对太阳直接辐射进行不确定性分析处理,并建立CSP电站支撑电力系统机组恢复的双层优化模型;然后,针对模型制定双层优化求解框架,外层为系统机组恢复模型,求取系统机组恢复信息和CSP电站的功率输出,内层为计及机组恢复效益的CSP电站运行优化模型,求解CSP电站运行状态;最后,在含CSP电站的改进新英格兰10机39节点系统中对该文所提方法进行研究验证,结果表明该方法可以充分发挥CSP电站的灵活性,能够有效支撑机组恢复过程。

关键词：光热发电黑启动电源机组恢复效益双层优化

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计及恢复效果的光热电站黑启动服务定价方法

华北电力大学学报（自然科学版） 2022年第4期49卷 33-42页

作者：李少岩孙永昭顾雪平方宇晨华北电力大学电气与电子工程学院河北保定071003 华北电力大学电气与电子工程学院北京102206

光热电站(concentrating solar power,CSP)因其具备储热系统和良好的运行特性,有望成为服务于电力系统应急恢复的黑启动电源。由于目前黑启动服务无法充分调动CSP电站参与系统恢复的积极性,有必要提出一种适合CSP电站的黑启动服务定价... 详细信息

光热电站(concentrating solar power,CSP)因其具备储热系统和良好的运行特性,有望成为服务于电力系统应急恢复的黑启动电源。由于目前黑启动服务无法充分调动CSP电站参与系统恢复的积极性,有必要提出一种适合CSP电站的黑启动服务定价方法。考虑兼顾黑启动服务的CSP电站运行特点,以引导CSP电站在潜在停电风险高时提升储热水平,加快系统恢复为目标,构建了计及恢复效果的黑启动服务定价模型。在模型中,引入等效机组容量来衡量CSP电站在系统恢复时的恢复效果,通过支付给CSP电站恢复效果费来激励其主动做好黑启动准备。为合理确定黑启动服务价格,详细构建了计及黑启动服务影响的CSP电站日前调度优化模型,并提出了综合评判指标。最后,以新英格兰10机39节点系统为例展示了定价过程,并验证了所提定价策略及方法的合理性、有效性。

关键词：黑启动服务定价方法恢复效果光热电站优化运行

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甬舟航道潮汐潮流的数值模拟及特征分析

海洋预报 2022年第3期39卷 94-106页

作者：彭腾腾纪棋严刘宇张洁孙永钊苏毓尹颐宸浙江海洋大学海洋科学与技术学院浙江舟山266061

基于非结构网格有限体积海岸海洋模型(FVCOM),建立了甬舟航道(121.78°~122.5°E,29.7°~30.1°N)及其附近海域的三维潮汐潮流数值模型。模拟结果同4个验潮站和2个连续测流站的观测资料吻合良好,表明该模型可以较好地反映甬舟航道海域... 详细信息

基于非结构网格有限体积海岸海洋模型(FVCOM),建立了甬舟航道(121.78°~122.5°E,29.7°~30.1°N)及其附近海域的三维潮汐潮流数值模型。模拟结果同4个验潮站和2个连续测流站的观测资料吻合良好,表明该模型可以较好地反映甬舟航道海域内潮汐潮流的分布特征和变化规律。该航道海域的潮汐类型为不规则半日潮,最大可能潮差介于4.5~4.7 m之间;潮流类型为规则半日潮流,主要为往复流,只有航道岸边少部分表现为旋转流。最大可能流速分布在狭窄的深水道,而航道水深较浅的岸边流速较小。潮致余流介于1~15 cm/s,大致方向由东南向西北传播,并且在航道的西北和东南两侧分别形成两个明显的闭合环流。

关键词： FVCOM 甬舟航道潮汐潮流

迭代粒子群优化的水下无线传感器网络节点自定位算法

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西北工业大学学报 2017年第4期35卷 648-654页

作者：常鲁杰刘明雍张立川孙永昭黄帅西北工业大学航海学院 96617部队西安航天精密机电研究所

传统MDS-MAP(multi-dimensional scaling MAP)算法使用节点间的最短路径作为真实距离计算节点位置,但当水下无线传感器网络(underwater wireless sensor networks,UWSN)构型非均匀时,最短路径将严重偏离节点间真实距离,位置计算将产生... 详细信息

传统MDS-MAP(multi-dimensional scaling MAP)算法使用节点间的最短路径作为真实距离计算节点位置,但当水下无线传感器网络(underwater wireless sensor networks,UWSN)构型非均匀时,最短路径将严重偏离节点间真实距离,位置计算将产生较大误差。针对此不足,文中设计了一种基于迭代粒子群优化的RQ-PSO定位算法。该方法利用MDS-MAP算法对传感器节点完成粗定位,引入几何约束来限制粒子群初始种群范围,并采用鲁棒四边形规则对未知节点位置进行优化求解。通过理论分析和仿真,结果表明,该算法收敛速度明显高于传统粒子群算法(PSO),定位精度高于传统MDSMAP与PSO算法,且RQ-PSO算法具有较强的鲁棒性。

关键词：水下传感器网络节点定位 MDS—MAP算法改进粒子群优化

A physically-based representative stress methodology for predicting stress rupture life of Ni-based DS superalloy

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Chinese Journal of Aeronautics 2023年第6期36卷 174-185页

作者： Jia HUANG Zhenzhuo HE Shuangqi LYU Xiaoguang YANG Duoqi SHI Yantao sun yongzhao LYU Zhizhong FU Guolei MIAO Jianan SONG School of Aeronautics and Astronautics Central South UniversityChangsha 410083China Aviation Engineering College Civil Aviation University of ChinaGuanghan 618307China School of Energy and Power Engineering Beihang UniversityBeijing 100083China Beijing Aeronautical Engineering Technical Research Center Beijing 100076China Chengdu Holy Industry&Commerce Corp.LTD Pengzhou 611936China School of Mechanical and Electrical Engineering Central South UniversityChangsha 410083China

Smooth and three types of U-shape single-edge notched plate specimens adopted to experimentally investigate stress rupture behavior of Ni-based Directionally Solidified(DS)superalloy at 850℃ exhibit notch weakening effect and multi-source cracking initiation near the notch ***,stress rupture behavior of smooth and V-shape notched round bars at 1040℃ revealed by Li et al indicates notch strengthening effect and creep micro-holes originating mostly from the central portion.A combined creep-viscoplastic constitutive model is employed to analyze the distribution of stress,strain and stress Triaxial Factor(TF)near the notch *** different stress distribution and creep restraint between asymmetric notched plate specimens and symmetric notched round bars are the main reasons for the corresponding failure ***,a good qualitative relationship exists between TF value and stress rupture life of notched ***,the area with maximum TF value(TF_(max))is highly consistent with creep damage initiation ***,based on the distribution characteristics of the initial tensile loading,a representative stress method independent of time-changing creep load at the location of TF_(max) is conducted for life *** predicted results of both smooth and notched plate specimens and round bars agrees well with the experimental results.

关键词： Creep Life model Ni-based superalloy Notched round bar Single edge notch

First Report of Osteoglossiform Fish Huashia from the Cretaceous of Eastern Liaoning,China

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Acta Geologica Sinica(English Edition) 2021年第4期95卷 1406-1408页

作者： WU Zijie GAO Fuliang QIU Longwei WANG Haipeng ZHONG Mishan GAO yongzhao Liaoning Provincial Institute of Geological Exploration Co. LtdDalianLiaoning 116100China School of Geosciences China University of Petroleum(East China)QingdaoShandong 266580China College of Earth Sciences Jilin UniversityChangchun 1300612China

Objective The Mesozoic strata in eastern Liaoning and southern Jilin are relatively well developed. Liu et al.(1963) studied Lycoptera in North China, and they mentioned the fossils of south Jilin, but they were not included in the study due to the lack of specimens and poor preservation. Ma and sun(1988) studied fish fossils from the Sankeyushu section in Tonghua, Jilin, and laid the foundation for the study of fish fossils in this area.

关键词： Cretaceous Eastern strata

高功率高重复频率飞秒掺镱光纤激光频率梳的研究(特邀)

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红外与激光工程 2019年第1期48卷 22-30页

作者：孙敬华孙克雄林志芳孙继芬晋路徐永钊东莞理工学院电子工程与智能化学院广东东莞523808 华中科技大学物理学院湖北武汉430074 Institute of Photonics and Quantum Sciences Heriot-Watt University

飞秒光学频率梳在精密计量学和光谱学中扮演着革命性的推动角色,成为近二十年超短脉冲激光技术及应用研究领域最活跃的前沿方向之一。文中基于250 MHz重复频率(frep)的掺镱(Yb)光纤激光器,研究了不同腔内色散以及锁模机制对飞秒脉冲序... 详细信息

飞秒光学频率梳在精密计量学和光谱学中扮演着革命性的推动角色,成为近二十年超短脉冲激光技术及应用研究领域最活跃的前沿方向之一。文中基于250 MHz重复频率(frep)的掺镱(Yb)光纤激光器,研究了不同腔内色散以及锁模机制对飞秒脉冲序列载波包络相位偏移频率(fCEO)噪声的影响。通过对飞秒光梳细节的优化,得到了49 d B信噪比的fCEO拍频信号并获得了秒稳3.2×10^(-10)的锁定结果,同时frep的锁定结果也达到了到了秒稳3.4×10^(-13)的精度。此外文中还研究了不同啁啾状态的种子光飞秒脉冲对基于大模场面积双包层Yb光子晶体光纤放大器输出光脉冲宽度的影响。以携带-3.8×10~4fs2预啁啾量的光脉冲作为种子光,在60 W 976 nm半导体激光泵浦下,获得了250 MHz重复频率、23 W平均功率和66 fs压缩后脉冲宽度的激光输出。

关键词：光学频率梳光子晶体光纤放大器超连续产生频率锁定