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"Energy methods in dynamics is a textbook based on the lectures given by the first author at Ruhr University Bochum, Germany. Its aim is to help students acquire both a good grasp of the first principles from which the governing equations can be derived, and the adequate mathematical methods for their solving. Its distinctive features, as seen from the title, lie in the systematic and intensive use of Hamilton's variational principle and its generalizations for deriving the governing equations of conservative and dissipative mechanical systems, and also in providing the direct variational-asymptotic analysis, whenever available, of the energy and dissipation for the solution of these equations. It demonstrates that many well-known methods in dynamics like those of Lindstedt-Poincare, Bogoliubov-Mitropolsky, Kolmogorov-Arnold-Moser (KAM), Wentzel–Kramers–Brillouin (WKB), and Whitham are derivable from this variational-asymptotic analysis. This second edition includes the solutions to all exercises as well as some new materials concerning amplitude and slope modulations of nonlinear dispersive waves."

"Bulk Urea Storage (BUS) dengan kapasitas 120.000 Ton dengan desain temperatur dan kelembaban relatif konstan sebesar 38 oC dan RH 50%. Tekanan di dalam BUS dikondisikan 75 Pa lebih besar daripada tekanan lingkungan agar tidak terjadi infilterasi (Air Leakage). Akan tetapi infiltrasi yang terjadi tidak bisa dihindari karena adanya perbedaan tekanan. Setelah dilakukan simulasi menggunakan Contam dengan menggunakan metode infiltrasi yaitu Effective Leakage Area (ELA) sebesar 10,619 m2 didapatkan laju aliran udara (Q) yang paling besar didapatkan 4641,63 L/s dengan perbedaan tekanan (∆P) pada BUS sebesar 34,41 Pa. Dengan simulasi Computational Fluid Dynamics (CFD) didapatkan rata-rata 101337 Pa, ini menunjukkan bahwa tekanan dalam BUS bernilai positip dan lebih besar 12 Pa dibandingkan tekanan lingkungan sebesar 101325 Pa (1 Atm). Pada Simulasi EnergyPlus didapatkan didapatkan penghematan energi sebesar 10,6%.

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Bulk Urea Storage (BUS) dengan kapasitas 120.000 Ton dengan desain temperatur dan kelembaban relatif konstan sebesar 38 oC dan RH 50%. Tekanan di dalam BUS dikondisikan 75 Pa lebih besar daripada tekanan lingkungan agar tidak terjadi infilterasi (Air Leakage). Akan tetapi infiltrasi yang terjadi tidak bisa dihindari karena adanya perbedaan tekanan. Setelah dilakukan simulasi menggunakan Contam dengan menggunakan metode infiltrasi yaitu Effective Leakage Area (ELA) sebesar 10,619 m2 didapatkan laju aliran udara (Q) yang paling besar didapatkan 4641,63 L/s dengan perbedaan tekanan (∆P) pada BUS sebesar 34,41 Pa. Dengan simulasi Computational Fluid Dynamics (CFD) didapatkan rata-rata 101337 Pa, ini menunjukkan bahwa tekanan dalam BUS bernilai positip dan lebih besar 12 Pa dibandingkan tekanan lingkungan sebesar 101325 Pa (1 Atm). Pada Simulasi EnergyPlus didapatkan didapatkan penghematan energi sebesar 10,6%."

"Detailed hints for the implementation of the various algorithms enable readers to write their own flow simulation program from scratch. The variety of applications is shown in several simulation results, including 93 black-and-white and 17 color illustrations. Moreover, after reading this book, readers should be able to understand more enhanced algorithms of computational fluid dynamics and to apply their new knowledge of modeling, discretization, parallelization, and visualization to other scientific fields, where numerical simulation has established itself, in addition to theoretical investigations and practical experiments, as a new path for uncovering the laws of nature. Among these fields are the examination of elastic solids, combustion, melting and coating processes, and crystal growth, as well as weather prediction."