Geoengineering & Scientific Computation Lab

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 河海工程學系(所)  教授

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)

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專業經歷 (PROFESSIONAL AFFILIATIONS)

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)

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獲獎紀錄 (HONORS AND AWARDS)

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

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國際學術服務 (ACADEMIC SERVICE)

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

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

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.

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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

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

Tel: (02)2462-2192 ext. 6109 (研究室)

Featured post

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。

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

配點 TREFFTZ 方法 研究新知

On the Accuracy of the Collocation Trefftz Method for Solving Two and Three Dimensional Heat Equations

Cheng-Yu Kua Jing-En Xiaoa Chih-Yu Liua Weichung Yeiha

a Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung, Taiwan

 

ABSTRACT

In this article, the accuracy of the collocation Trefftz method (CTM) for solving two and three dimensional heat equations was investigated. The numerical solutions were approximated by superpositioning T-complete functions formulated using cylindrical harmonics. To avoid the ill-conditioned system of the CTM, the characteristic lengths and the multiple-scale Trefftz method were adopted. The results revealed that for two-dimensional problems, the CTM can provide highly accurate numerical solutions, with the accuracy increasing with the order of the terms. For three-dimensional problems, highly accurate numerical solutions can be obtained using a certain order of terms, where the order is determined by performing an accuracy assessment.

Keywords: Trefftz method; Ill-conditioned; Characteristic length; Cylindrical harmonics; Three dimensional

引用文獻

Cheng-Yu Ku*, Jing-En Xiao, Chih-Yu Liu, Weichung Yeih (2016), “On the Accuracy of the Collocation Trefftz Method for Solving Two and Three Dimensional Heat Equations”, Numerical Heat Transfer, Part B: Fundamentals: An International Journal of Computation and Methodology, Volume 69, Issue 4, pp. 334-350, 2016, http://dx.doi.org/10.1080/10407790.2015.1125215. (IF 1.330, SCIE, 30/58, Q2 in THERMODYNAMICS, JCR 2015)

Full paper link:

https://drive.google.com/open?id=0B6KIiA0ONNL1dnE0Ni0xNnh2NEE

離岸風機套筒式基樁 研究新知

臺灣地區離岸風機套筒式基樁承載特性分析之研究

摘要

本研究針對臺灣西部海岸離岸風機套筒式基樁承載特性進行分析。由於臺灣地理位置特殊位於環太平洋地震帶,地震活動十分頻繁,因此,離岸風機基礎在地震下之穩定性評估為重要之研究課題。此外,本研究針對海事工程有效應力孔隙水壓激發模式、海事工程土壤與流體耦合分析模式進行研究,以利風機基礎結構分析設計。臺灣西部海域離岸風場工址多屬海床沈積層,土層主要以砂土與黏土層為主,且一般較為鬆軟,因此,本研究提出一套新的離岸風機基礎設計流程,而離岸風機套筒式基樁之靜力與動力承載力分析是重之重點研究課題之一。由分析成果顯示,本研究之基礎設計分析可適切掌握土壤與基礎之互制行為,孔隙水壓激發模式能有效地模擬土壤液化現象,配合風機設計載重能檢核樁基礎承載力是否滿足設計需求,並利用動力分析得知基礎受震後之行為。
關鍵詞 : 動力分析、 孔隙水壓、海床土壤、離岸風場 、套筒式基礎

引用文獻

Cheng-Yu Ku*, Lien-Kwei Chien (2016), “Modeling of Load Bearing Characteristics of Jacket Foundation Pile for Offshore Wind Turbines in Taiwan”, Energies 2016, 9 (8), 625; doi:10.3390/en9080625. (IF 2.077, SCI, 43/88, Q2 in ENERGY & FUELS, JCR 2015)

全文下載

https://drive.google.com/open?id=0B6KIiA0ONNL1LTdaOXQwNEJWa3M

 

Article

Modeling of Load Bearing Characteristics of Jacket Foundation Piles for Offshore Wind Turbines in Taiwan

Cheng-Yu Ku * and Lien-Kwei Chien

Department of Harbor and River Engineering, National Taiwan Ocean University, Keelung 202, Taiwan;

Abstract: This paper presents a pioneering study on numerical modeling of load bearing characteristics of the jacket foundation pile for offshore wind turbines on the west coast of Taiwan. Because Taiwan is located in an earthquake prone area, there is significant interest in improving the prediction of the behavior of wind turbine jacket foundations subjected to seismic loading.  Investigation of the bearing capacity of the jacket foundation pile for the offshore wind farm using effective stress analysis, with consideration of pore pressure generation and soil/liquid coupled analysis, was conducted. A new procedure to evaluate the design of offshore wind turbine foundation piles in the sand and clay inter-layered soil was also proposed. Static and dynamic analyses of bearing capacity of the jacket foundation pile were conducted. Results obtained demonstrate that the design process for the jacket foundation pile proposed in this study can properly reflect the interaction behavior of the foundation and the soil. In addition, the pore pressure generation model can be used to simulate soil liquefaction. The proposed method is also very useful in the evaluation of the design capabilities of offshore wind turbine jacket foundations.

Keywords: dynamic analysis; pore pressure; seabed soils; offshore wind farm; jacket foundation

Cheng-Yu Ku*, Lien-Kwei Chien (2016), “Modeling of Load Bearing Characteristics of Jacket Foundation Pile for Offshore Wind Turbines in Taiwan”, Energies 2016, 9 (8), 625; doi:10.3390/en9080625. (IF 2.077, SCI, 43/88, Q2 in ENERGY & FUELS, JCR 2015)

Full paper download:

https://drive.google.com/open?id=0B6KIiA0ONNL1LTdaOXQwNEJWa3M

2016_J_energies-09-00625