大地工程與科學計算研究室

研究室主持老師

顧承宇 教授   Professor Cheng-Yu Ku

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主要經歷 (ACADEMIC POSITIONS)

國立台灣海洋大學 特聘教授 (2019/8~)

Distinguished Professor, Department of Harbor and River Engineering, National Taiwan Ocean University

國立台灣海洋大學 河海工程學系(所) 教授 (2014/8~)

Professor, Department of Harbor and River Engineering, National Taiwan Ocean University

國立台灣海洋大學  應用地球科學研究所 合聘教授

Professor,  Institute of Applied Geosciences, National Taiwan Ocean University

國立臺灣海洋大學職業安全衛生中心 主任 (2018/8~)

Director, Center for Occupational Safety and Health, National Taiwan Ocean University (2018/8~)

國立臺灣海洋大學校工學院教師評審委員會委員(2018/8~2019/7)

The Faculty Promotion and Evaluation Committee, Engineering School, National Taiwan Ocean University (2015/8~2016/7)

國立臺灣海洋大學校教師評審委員會委員(2015/8~2016/7)

The Faculty Promotion and Evaluation Committee, National Taiwan Ocean University (2015/8~2016/7)

國立臺灣海洋大學河海工程系 副系主任(2013/3~2015/7)

Associate chairperson, Department of Harbor and River Engineering, National Taiwan Ocean University (2013/3~2015/7)

國立臺灣海洋大學 工學院 計算與模擬中心 主任(2011/1~2016/12)

Director, Computation and Simulation Center, National Taiwan Ocean University

國立臺灣海洋大學河海工程系 副教授(2011/7~2014/8)

Associate professor, Department of Harbor and River Engineering, National Taiwan Ocean University (2011/7~2014/8)

國立臺灣海洋大學河海工程系 助理教授(2008/8~2011/7)

Assistant professor, Department of Harbor and River Engineering, National Taiwan Ocean University (2008/8~2011/7)

專業經歷 (PROFESSIONAL AFFILIATIONS)

甲種職業安全衛生業務主管 (證書, 2018 10~)

Occupational safety and health affair managers (2018 10~)

國際岩石力學學會(ISRM)不連續變形分析法技術委員(2011~2015)

International Society for Rock Mechanics(ISRM) Commission on Discontinuous Deformation Analysis (2011~2015)

中華民國國家教育研究院 土木工程名詞審譯委員會大地領域審譯委員

National committee of geotechnical terms in civil engineering, National Academy for Educational Research, R.O.C. (2015~)

中華民國經濟部標準檢驗局 環境保護國家標準技術委員會委員(2013~2015)

Technical committee of environmental protection, Bureau of Standards, Metrology & Inspection, Ministry of Economic Affairs, R.O.C. (2013~2015)

中華民國經濟部標準檢驗局 土木工程及建築國家標準技術委員會委員(2012~2013)

Technical committee of civil engineering, Bureau of Standards, Metrology & Inspection, Ministry of Economic Affairs, R.O.C.  (2012~2013)

中華民國大地工程學會第十屆技術委員會副主任委員(2015/5~2017/3)

中華民國大地工程學會第十屆會務規劃及會員委員會委員(2015/5~2017/3)

中華民國大地工程學會 第九屆理事

中華民國大地工程學會第八屆會務規劃及會員委員會主任委員

2011 年國際計算與實驗工程科學研討會(ICCES MM)科技委員

中華民國大地工程學會第七屆教育委員會委員

第十四屆大地工程學術研討會執行委員會委員

財團法人中興工程顧問社 工程師, 研究員, 高級研究員兼組長(1993/6~2008/7)

獲獎紀錄 (HONORS AND AWARDS)

2018年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2018, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2017年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2017, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2017年榮獲國立臺灣海洋大學 「傑出教學教師」(2017/7, 全校僅一位獲獎)

2017, DISTINGUISHED TEACHING AWARD, NTOU (only one position in NTOU)

2016年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2016, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2016年交通部運輸研究所合作研究計畫佳作研究獎 (2016/6)

2016, Project Award for Excellent Research Investigators, Institute of Transportation, MOTC, R.O.C.

2015年交通部運輸研究所合作研究計畫佳作研究獎 (2015/6)

2015, Project Award for Excellent Research Investigators, Institute of Transportation, MOTC, R.O.C.

2015年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2015, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2014年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2014, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2013年國立臺灣海洋大學「增進社會服務」獎勵

2013, NTOU PROMOTION OF SOCIAL SERVICES AWARD

2013年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2013, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2012年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2012, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2011年國立臺灣海洋大學獎勵特殊優秀人才獎勵 (科技部補助)

2011, NTOU for Ministry of Science and Technology Talent Subsidy Incentives by Faculty Members

2011年國立臺灣海洋大學校級教學優良教師

2011, Excellence in Teaching Award, NTOU

2011年行政院國科會優秀青年學者研究計畫獎勵 (個別型)

2011, Project Award for Excellent Junior Research Investigators, Ministry of Science and Technology, R.O.C.

2011年度國立臺灣海洋大學獎勵學術獎

2010 度國立臺灣海洋大學ESI資料庫高被引用論文獎勵

2010, ESI Highly Cited Paper Award, NTOU

2010 年國立臺灣海洋大學獎勵學術獎

2010 年岩盤工程研討會工程論文獎第一名

2010, Taiwan Rock Engineering Symposium, Research Paper Award First Place

2009 年國立臺灣海洋大學獎勵學術獎

2006 年岩盤工程研討會優良論文獎

2006, Taiwan Rock Engineering Symposium, Excellent Research Paper Award

國際學術服務 (ACADEMIC SERVICE)

Editor of APPLIED SCIENCES (a SCI international journal) 2018~

Editor of JOURNAL OF MARINE SCIENCE AND TECHNOLOGY (a SCI international journal) 2014/8~

The international examiner of Doctor of Philosophy thesis, Griffith University, Australia (2015)

International reviewer of research proposal, National Center of Science and Technology Evaluation, Ministry of Education and Science, Astana, Republic of Kazakhstan, 2014.

International reviewer of research proposal, National Center of Science and Technology Evaluation, Ministry of Education and Science, Astana, Republic of Kazakhstan, 2011.

SCIENTIFIC COMMITTEE, ICCES Special Symposium on Meshless & Other Novel Computational Methods, 2011.

Invited speaker, International Conference Computational and Experimental Engineering and Science, 2011.

Session co-chairman, the 45th U.S. Rock Mechanics / Geomechanics Symposium, American Rock Mechanics Association. 2011.

Keynote speaker, International Conference Computational and Experimental Engineering and Science, 2010.

Session chairman, 2010 Young Southeast Asian Geotechnical Conference, Tawan.

學歷 (Education/Degrees)

美國賓州匹茲堡大學土木工程暨環境工程研究所 博士 (2002)

Ph.D., Civil and Environmental Engineering, University of Pittsburgh, U. S. A.

國立臺灣大學土木工程研究所 碩士 (1991)

Master in Civil Engineering, National Taiwan University,Taiwan

教師研究室

國立台灣海洋大學 河海工程二館   HRE2 508

研究生研究室

國立台灣海洋大學 河海工程二館   HRE2 514

20224 基隆市中正區北寧路2號

E-mail: chkst26@mail.ntou.edu.tw

Tel: (02)2462-2192 ext. 6109 (研究室)

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本研究室獲國科會100年度優秀年輕學者計畫獎勵

本研究室顧承宇老師獲國科會100年度優秀年輕學者計畫獎勵, 為期三年.

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世界大學排名 海大擠進前400名

世界大學排名,國立台灣海洋大學首度擠進四○○大!英國《泰晤士報》高等教育特刊(Times Higher Education)日前公布二○一一至二○一二年世界大學排行榜調查報告,海洋大學排名在三五一到四○○名之間。

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配點型無網格法求解非均質非線性自由液面問題

On Solving Nonlinear Moving Boundary Problems with Heterogeneity Using the Collocation Meshless Method

Abstract: In this article, a solution to nonlinear moving boundary problems in heterogeneous geological media using the meshless method is proposed. The free surface flow is a moving boundary problem governed by Laplace equation but has nonlinear boundary conditions. We adopt the collocation Treff tz method (CTM) to approximate the solution using Treff tz base functions, satisfying the Laplace equation. An iterative scheme in conjunction with the CTM for finding the phreatic line with over–specified nonlinear moving boundary conditions is developed. To deal with flow in the layered heterogeneous soil, the domain decomposition method is used so that the hydraulic conductivity in each subdomain can be diff erent. The method proposed in this study is verified by several numerical examples. The results indicate the advantages of the collocation meshless method such as high accuracy and that only the surface of the problem domain needs to be discretized. Moreover, it is advantageous for solving nonlinear moving boundary problems with heterogeneity with extreme contrasts in the permeability coefficient.
Keywords: free surface; nonlinear; heterogeneity; the collocation Treff tz method; nonlinear boundary condition

doi:10.3390/w11040835

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基本解法結合疊代法求解三維自由液面非線性問題

The Method of Fundamental Solutions for Three-Dimensional Nonlinear Free Surface Flows Using the Iterative Scheme

Abstract: In this article, we present a meshless method based on the method of fundamental solutions (MFS) capable of solving free surface flow in three dimensions. Since the basis function of the MFS satisfies the governing equation, the advantage of the MFS is that only the problem boundary
needs to be placed in the collocation points. For solving the three-dimensional free surface with nonlinear boundary conditions, the relaxation method in conjunction with the MFS is used, in which
the three-dimensional free surface is iterated as a movable boundary until the nonlinear boundary conditions are satisfied. The proposed method is verified and application examples are conducted. Comparing results with those from other methods shows that the method is robust and provides high accuracy and reliability. The effectiveness and ease of use for solving nonlinear free surface flows in three dimensions are also revealed.

Keywords: three–dimensional; tree surface; nonlinear; the method of fundamental solutions (MFS); meshless method

檔案歡迎下載

doi:10.3390/app9081715


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混合邊界型無網格法求解層狀材料之熱傳導問題 (A Novel Hybrid Boundary-Type Meshless Method for Solving Heat Conduction Problems in Layered Materials)

Abstract

In this article, we propose a novel meshless method for solving two-dimensional stationary heat conduction problems in layered materials. The proposed method is a recently developed boundary-type meshless method which combines the collocation scheme from the method of fundamental solutions (MFS) with the collocation Trefftz method (CTM) to improve the applicability of the method for solving boundary value problems. Particular non-singular basis functions from cylindrical harmonics are adopted in which the numerical approximation is based on the superposition principle using the non-singular basis functions expressed in terms of many source
points. For the modeling of multi-layer composite materials, we adopted the domain decomposition method (DDM), which splits the domain into smaller subdomains. The continuity of the flux and the temperature has to be satisfied at the interface of subdomains for the problem. The validity of
the proposed method is investigated for several test problems. Numerical applications were also carried out. Comparison of the proposed method with other meshless methods showed that it is highly accurate and computationally efficient for modeling heat conduction problems, especially in heterogeneous multi-layer composite materials.
Keywords: heat conduction problems; the collocation scheme; the meshless method; the domain decomposition method; layered materials.

檔案歡迎下載

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邊界型無網格法應用於多層飽和土層地下水流問題之研究

A Novel Boundary-Type Meshless Method for Modeling Geofluid
Flow in Heterogeneous Geological Media

Jing-En Xiao, Cheng-Yu Ku , Chih-Yu Liu, and Wei-Chung Yeih

 

Abstract

A novel boundary-type meshless method for modeling geofluid flow in heterogeneous geological media was developed. The numerical solutions of geofluid flow are approximated by a set of particular solutions of the subsurface flow equation which are expressed in terms of sources located outside the domain of the problem. This pioneering study is based on the collocation Trefftz method and provides a promising solution which integrates the T-Trefftz method and F-Trefftz method. To deal with the subsurface flow problems of heterogeneous geological media, the domain decomposition method was adopted so that flux conservation and the continuity of pressure potential at the interface between two consecutive layers can be considered in the numerical model. The validity of the model is established for a number of test problems. Application examples of subsurface flow problems with free surface in homogenous and layered heterogeneous geological media were also carried out. Numerical results demonstrate that the proposed method is highly accurate and computationally efficient. The results also reveal that it has great numerical stability for solving subsurface flow with nonlinear free surface in layered heterogeneous geological media even with large contrasts in the hydraulic conductivity.

Full paper link:

https://doi.org/10.1155/2018/9804291

檔案歡迎下載

 

 

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配點 TREFFTZ 方法應用於未飽和土層崩塌之研究

Modeling of Transient Flow in Unsaturated Geomaterials for Rainfall-Induced Landslides Using a Novel Spacetime Collocation Method

 

Abstract

The modeling of transient flow in unsaturated soils for rainfall-induced landslides using a novel spacetime collocation method is presented. A numerical solution obtained in the spacetime coordinate system is approximated by superpositioning Trefftz basis functions satisfying the linearized Richards equation for collocation points on the spacetime domain boundary. The Gardner exponential model is adopted to derive the linearized Richards equation to describe the soil-water characteristic curve in unsaturated soils. To deal with the rainfall-induced landslides, the infinite slope stability analysis coupled with the proposed meshless method with the consideration of the fluctuation of time-dependent matric suction is developed. The proposed method is validated for several test problems. Application examples of transient modeling of flow for rainfall-induced landslides in homogenous unsaturated soils are also conducted. Numerical results demonstrate that the proposed method is highly accurate to deal with transient flow in unsaturated soils for rainfall-induced landslides. In addition, it is found that the numerical method using the Richards equation with the Gardner model may provide a promising solution for different soil textures.

https://doi.org/10.1155/2018/7892789

 

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海大今提前慶祝教師節 表揚傑出優良教師 河海工程學系顧承宇教授獲選年度傑出教師

海大今提前慶祝教師節 表揚傑出優良教師 河海工程學系顧承宇教授獲選 2016/17 年傑出教師. (本校105 學年度僅一名「傑出教學教師」名額獎項)

00220644.201709210921M

 

 

 

 

 

資料來源: http://www.cna.com.tw/postwrite/Detail/220644.aspx

海大今提前慶祝教師節 表揚傑出優良教師 河海工程學系顧承宇教授獲選年度傑出教師 -

 

 

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基本解 Method of Fundamental Solutions (MFS) 方法 研究新知

On solving free surface problems in layered soil using the method of fundamental solutions

Jing-En Xiao, Cheng-Yu Ku ∗ , Chih-Yu Liu, Chia-Ming Fan, Weichung Yeih
Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung, Keelung, Taiwan

Abstract

This paper presents the numerical solutions of free surface seepage flow in layered soil using the method of fundamental solutions (MFS). The numerical solutions are approximated by a set of fundamental solutions of the two-dimensional Laplace equation which are expressed in terms of sources located outside the domain of the problem. The unknown coefficients in the linear combination of the fundamental solutions which are accomplished by collocation imposing the boundary condition at a finite number of points can then be solved. To deal with the seepage problems of layered soil profiles, the domain decomposition method was adopted so that flux conservation and the continuity of pressure potential at the interface between two consecutive layers can be considered in the numerical model. The validity of the model is established for a number of test problems, including seepage problems in a rectangular dam, a trapezoidal dam, and an earth dam, by comparing numerical results with those from other methods. Application examples were also carried out. The results reveal that the proposed method based on the MFS has great numerical stability for solving seepage flow with nonlinear free surface in layered heterogeneous soil even with large contrasts in the hydraulic conductivity.

Keywords:Seepage, Free surface, Layered soil, The method of fundamental solutions, The domain decomposition method.

引用文獻

Jing-En Xiao, Cheng-Yu Ku*, Chih-Yu Liu, Chia-Ming Fan, Weichung Yeih (2017), “On Solving Free Surface Problems in Layered Soil Using the Method of Fundamental Solutions “, Engineering Analysis with Boundary Elements, Vol. 83, pp. 96-106. (IF 1.721, Q2 in ENGINEERING, MULTIDISCIPLINARY, JCR 2016)

Full paper link:

https://drive.google.com/file/d/0B31JQsw-BKEKMElfSV9jOVlRbnM/view?usp=sharing

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恭喜本研究室通過科技部106年度多年期一般型研究計畫

恭喜本研究室通過科技部106年度多年期一般型研究計畫(整合型)

計畫名稱: 【 海岸開發利用與國土保護及環境風險評估-海岸地區地層下陷影響區域及風險評估 】

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恭喜本研究室通過科技部106年度第2件研究計畫

恭喜本研究室通過科技部106年度第2件研究計畫 (計畫主持人:顧承宇 教授)

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本研究室劉芷妤與蕭靖恩同學通過博士班資格考試

恭喜本研究室劉芷妤與蕭靖恩同學通過博士班資格考試, 成為博士候選人

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