Untitled - Teknik Kelautan / ITB

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Application of Two Iterative Methods for Solving System of Linear Equations In a Tidally Generated Flow Model Purwanto Bekti Santoso 1 & Nastain 1 1 Department of Civil Engineering, Universitas Jenderal Soedirman Jl. Mayjen Sungkono Km 5 Blater, Purbalingga, 53371, Indonesia Email: purwanto@unsoed.ac.id Abstract. Solution of a system of linear equations involved in the calculations of three-dimensional flows in estuary, lake, and coastal environments takes a considerable portion from the overall computation time. Therefore, an efficient algorithm for solving the linear equations system needs to be applied so that the overall computation time is reduced. In this study, the linear equations system solvers to be applied were the conjugate gradient method and the successive overrelaxation method. The effectiveness of the schemes was tested in a semi-implicit numerical solution of three-dimensional shallow water hydrodynamics model. The test results show that the conjugate gradient method is very efficient in terms of the number of iterations required to achieve convergence of the calculation. However, this method requires additional loops of calculation so that its efficiency in the overall computation time is greatly reduced. With appropriate selection of the relaxation coefficient, the method of successive over-relaxation is preferable to the conjugate gradient. Keywords: shallow water flow model; numerical method; linear equation; convergence. 18
Oil Spill Modeling Study of Montara WHP Blowout using Software MoTuM Muslim Muin Ocean Engineering Research Group Institut Teknologi Bandung Email: m_muin@ocean.itb.ac.id Abstract. The Blowout at the Montara Well Head Platform (WHP) had released significant amount oil to Timor Gap and adjacent area. The release of oil started on the 21 st August 2009 and stopped at November 2 nd 2009. The spatial extent of oil spill, fates, and exposure occurrence were simulated using software MoTuM. The paper present the methodology and application of integrated three dimensional nonorthogonal boundary fitted ocean hydrodynamics and oil spill models in Geographic Information System (GIS). The ocean hydrodynamics model was calibrated and validated using available observation data. The spatial extents of the oil were compared with satellites image and flight observation. The agreement between results of simulation and observation are excellent. Keywords: Oil Spill, Oil Spill Model, MoTuM, Montara, Timor Gap 19
Page 2 and 3: The Second International Conference
Page 4 and 5: Preliminary Study of the Flow Noise
Page 6 and 7: Recent Development of The Empirical
Page 8 and 9: Near- and Far-Field Characteristics
Page 10 and 11: Application Study of Finite Volume
Page 12 and 13: Tsunami Hazard Assessment and Mappi
Page 14 and 15: Design & Installation Requirements
Page 16 and 17: Santos Maleo Producer MOPU, In Situ
Page 18 and 19: Subsea Pipeline Stress Analysis In
Page 20 and 21: Cooling Water Recirculation Modelin
Page 24 and 25: Application of Large Scale 3D Non-O
Page 26 and 27: Development of The BPPT-lock Breakw
Page 28 and 29: Assessment of Navigation Channel Re
Page 30 and 31: Reliability Assessment of Offshore
Page 32 and 33: Chloride Induced Corrosion of Concr
Page 34 and 35: Preliminary Study of the Flow Noise
Page 36 and 37: Application of Pile Driving Analyze
Page 38 and 39: Field and Model Studies of the Dyna
Page 40 and 41: Application of the Finite Volume Me
Page 42 and 43: Sedimentation Process Study at Entr
Page 44 and 45: Coastal Management Modeling Based o
Page 46 and 47: The Contribution of Oceanographic N
Page 48 and 49: Simulation of the Single Hydrophone
Page 50 and 51: Diver Detection Experiment Using Si
Page 52 and 53: Bukit Terbuka Hijau (Green Open Hil
Page 54 and 55: Tsunami Disaster Mitigation Educati
Page 56: Potential of Ocean Thermal Energy C

Untitled - Teknik Kelautan / ITB

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