Inverse design of compressor cascades on parallel computers

2002-01-01
Özhamam, M.
Eyi, Sinan
In this paper, the performance improvements of an inverse compressor cascade design are investigated. A Navier-Stokes code is used for flow analysis. A least-square optimization method is used to minimize pressure discrepancies between initial and target cascades. In optimization process, most of the CPU time is associated with the sensitivity analyses. Sensitivities are evaluated on parallel computers by using a finite difference approach. Results show that, analyzing sensitivities on parallel computers reduces the execution time of design significantly. © 2002 The American Institute of Aeronautics and Astronautics Inc. All rights reserved.

Suggestions

Automated Sizing of Truss Structures Using a Computationally Improved SOPT Algorithm
Hasançebi, Oğuzhan (2013-06-01)
The present study attempts to apply an efficient yet simple optimization (SOPT) algorithm to optimum design of truss structures under stress and displacement constraints. The computational efficiency of the technique is improved through avoiding unnecessary analyses during the course of optimization using the so-called upper bound strategy (UBS). The efficiency of the UBS integrated SOPT algorithm is evaluated through benchmark sizing optimization problems of truss structures and the numerical results are r...
Parallel linear solution of large structures on heterogeneous PC clusters
Kurç, Özgür (2006-12-01)
In this paper, a parallel solution framework for the linear static analysis of large structures on heterogeneous PC clusters is presented. The framework consists of two main steps; data preparation and parallel solution. The parallel solution is performed by a substructure based method with direct solvers. The aim of the data preparation step is to create the best possible substructures so that the condensation times of substructures are balanced. Examples which illustrate the applicability and the efficien...
Analytical formulation of maximum length limits of integral bridges on cohesive soils
Dicleli, Murat (Canadian Science Publishing, 2005-08-01)
This paper presents an analytical approach for predicting the length limits of integral bridges built on cohesive soils based on the flexural strength of the abutments and the low cycle fatigue performance of the steel H-piles at the abutments under cyclic thermal loading. First, H-piles that can accommodate large inelastic deformations are determined considering their local buckling instability. Then, a damage model is used to determine the maximum cyclic deformations that such piles can sustain. Next, non...
Waveguide multiplexer: miniaturized contiguous-band six-channel multiplexer structure
Sevinc, Y.; Demir, Şimşek (2017-08-24)
Efficient design procedure is introduced for the design of miniaturized contiguous band manifold-coupled multiplexer using the combination of the circuit-full-wave-based optimization in this study. Systematic methodology is based on the design of miniaturized channel filters using circuit model extraction and H-plane manifold network with hybrid optimization. The multiplexer is firstly analyzed in circuit level, and relevant lengths between channel filters and the lengths between each channel filters to man...
Exact solution approaches for the workload smoothing in assembly lines
DİNLER, DERYA; Tural, Mustafa Kemal (2021-01-01)
In this paper, the problem of minimizing the smoothness index for an assembly line given a fixed cycle time and the number of workstations is studied. This problem which is known as the workload smoothing line balancing problem (WSLBP) is a mixed-integer quadratic programming problem. Until recently, this problem has only been tackled using heuristic approaches. Recently, there have been some attempts to solve this problem exactly using mixed-integer linear programming (MILP). The MILP formulations, however...
Citation Formats
M. Özhamam and S. Eyi, “Inverse design of compressor cascades on parallel computers,” 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/69594.