FLOW AROUND A CYLINDER - istiarto

– vii –
Acknowledgements
I wish to express my deepest gratitude and appreciation to my supervisor, Prof.
W.H. Graf, Director of the Laboratoire de Recherches Hydrauliques (LRH) of the École
Polytechnique Fédérale de Lausanne (EPFL), for admitting me to undertake the research
work leading to this dissertation. I consider it as a privilege to work under his
supervision. It is through his inexhaustible guidance, advice, and encouragement that this
work could be accomplished.
I am deeply indebted to Prof. Y. Zech from the Université Catholique de Louvain,
Louvain-la-Neuve, Belgium, with whom I had fruitful discussions during his many stays
at EPFL as a visiting professor and a member of the examination committee. His
constructive ideas and suggestions have certainly contributed a lot to the work,
particularly for the numerical part. I appreciate his careful reading of the manuscript and
the verification he did to all mathematical expressions.
Sincere thanks go to all the members of LRH for their friendships and unconditional
readiness to help. Special appreciation is due to Dr. M.S. Altinakar for the many
rewarding discussions and his willingness to serve as a member of the examination
committee, to Dr. U. Lemmin for providing the experimental facilities, and to
C. Perrinjaquet for his invaluable help in the computer logistic support. Thanks go also to
my fellow (past and present) doctoral students at the LRH: P. Hamm, B. Yulistiyanto,
R. Jiang, C. Shen, M. Cellino, K. Blanckaert, D. Hurther, I. Fer, A. Kurniawan, Z. Qu,
Y. Guan, and I. Schoppe. I thank Dr. M. Cellino for serving as the member of the
examination committee.
I express my thanks to Dr. R. Monti from the Terr@A Hydraulic Research Centre for the
Environment, Departement of IIAR, Politecnico di Milano, Italy, for her constructive
comments while serving as a member of the examination committee. Prof. P. Egger is
acknowledged for his willingness to serve as the chairman of the examination committee.
My special thanks go to Dr. Budi Wignyosukarto and Dr. Djoko Legono from the Civil
Engineering Department, Gadjah Mada University, Indonesia, for their support and
encouragement in my decision to go abroad to undertake this study. Their continuous
help offered to me and to my family is sincerely acknowledged.
Finally, I wish to convey my gratitude to the Swiss Federal Commission on Scholarships
for Foreign Students for providing the financial support during the early phase of the
work.
To all of you, I say a most heartfelt thank you.