Combined Global and Local Optimization Techniques Applied to History Matching

2003 ◽  
Author(s):  
R.W. Schulze-Riegert ◽  
O. Haase ◽  
A. Nekrassov
Keyword(s):  
History Matching ◽  
Local Optimization ◽  
Optimization Techniques ◽  
Global And Local Optimization ◽  
Global And Local

CT-MRI automatic surface-based registration schemes combining global and local optimization techniques

2003 ◽  
Vol 11 (4) ◽  
pp. 219-232 ◽  
Author(s):  
George K. Matsopoulos ◽  
Konstantinos K. Delibasis ◽  
Nicolaos A. Mouravliansky ◽  
Pantelis A. Asvestas ◽  
Konstantina S. Nikita ◽  
...  
Keyword(s):  
Local Optimization ◽  
Optimization Techniques ◽  
Global And Local Optimization ◽  
Global And Local

scholarly journals Design and Automated Optimization of an Internal Turret Mooring System in the Frequency and Time Domain

2021 ◽  
Vol 9 (6) ◽  
pp. 581
Author(s):  
Hongrae Park ◽  
Sungjun Jung
Keyword(s):  
System Design ◽  
Time Domain ◽  
Initial Conditions ◽  
Minimum Weight ◽  
Optimization Algorithms ◽  
Local Optimization ◽  
Mooring System ◽  
Floating Offshore Wind Turbines ◽  
Global And Local Optimization ◽  
Global And Local

A cost-effective mooring system design has been emphasized for traditional offshore industry applications and in the design of floating offshore wind turbines. The industry consensus regarding mooring system design is mainly inhibited by previous project experience. The design of the mooring system also requires a significant number of design cycles. To take aim at these challenges, this paper studies the application of an optimization algorithm to the Floating Production Storage and Offloading (FPSO) mooring system design with an internal turret system at deep-water locations. The goal is to minimize mooring system costs by satisfying constraints, and an objective function is defined as the minimum weight of the mooring system. Anchor loads, a floating body offset and mooring line tensions are defined as constraints. In the process of optimization, the mooring system is analyzed in terms of the frequency domain and time domain, and global and local optimization algorithms are also deployed towards reaching the optimum solution. Three cases are studied with the same initial conditions. The global and local optimization algorithms successfully find a feasible mooring system by reducing the mooring system cost by up to 52%.

Global and local optimization for optical systems

Optik ◽  
2006 ◽  
Vol 117 (3) ◽  
pp. 111-117 ◽  
Author(s):  
Xuemin Cheng ◽  
Yongtian Wang ◽  
Qun Hao ◽  
Masaki Isshiki
Keyword(s):  
Local Optimization ◽  
Optical Systems ◽  
Global And Local Optimization ◽  
Global And Local
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