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differential-evolution-optimization-algorithms
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A broad reconsideration of anti-vortex film cooling method using numerical optimization and an improved heat-flux model
, Article International Journal of Heat and Fluid Flow ; Volume 89 , 2021 ; 0142727X (ISSN) ; Mazaheri, K ; Sharif University of Technology
Elsevier B.V
2021
Abstract
This paper represents the detailed results of an evolutionary optimization framework towards the exploration of vortex mechanisms leading to effective anti-vortex film cooling. In this regards, several arrangements of triple cooling holes were studied on flat and curved geometries using differential-evolution optimization algorithm and a modified Reynolds-stress based flow solver. Depending on the flow and geometric parameters, four distinct types of vortex interaction with different cooling mechanisms were identified. The vortex-trapping mechanism, observed in the optimized upstream arrangement acts through imposing a mild downwash over the main counter-rotating vortex pair and provides the...
A modified differential evolution optimization algorithm with random localization for generation of best-guess properties in history matching
, Article Energy Sources, Part A: Recovery, Utilization and Environmental Effects ; Volume 33, Issue 9 , Feb , 2011 , Pages 845-858 ; 15567036 (ISSN) ; Nouri, A ; Pishvaie, M. R ; Bozorgmehri, R ; Sharif University of Technology
2011
Abstract
Computer aided history matching techniques are increasingly playing a role in reservoir characterization. This article describes the implementation of a differential evolution optimization algorithm to carry out reservoir characterization by conditioning the reservoir simulation model to production data (history matching). We enhanced the differential evolution algorithm and developed the modified differential evolution optimization method with random localization. The proposed technique is simple-structured, robust, and computationally efficient. We also investigated the convergence characteristics of the algorithm in some synthetic oil reservoirs. In addition, the proposed method is...