scholarly journals A comparison of the continuous and discrete adjoint approach to automatic aerodynamic optimization

2000 ◽  
Author(s):  
Siva Nadarajah ◽  
Antony Jameson
Keyword(s):  
Aerodynamic Optimization ◽  
Discrete Adjoint ◽  
Adjoint Approach

A STUDY OF DISCRETE ADJOINT-BASED GRADIENT METHOD IMPLEMENTATION FOR AERODYNAMIC OPTIMIZATION

2020 ◽  
Author(s):  
Gilberto Bueno Luque Filho ◽  
Marco Aurélio Leonel Matunaga ◽  
João Luiz F. Azevedo
Keyword(s):  
Gradient Method ◽  
Aerodynamic Optimization ◽  
Discrete Adjoint

Adjoint Based Aerodynamic Optimization of a Multi-Splitter Turbine Vane Frame

2019 ◽  
Author(s):  
Vincenzo Russo ◽  
Simone Orsenigo ◽  
Lasse Mueller ◽  
Tom Verstraete ◽  
Sergio Lavagnoli
Keyword(s):  
Total Pressure ◽  
Low Pressure ◽  
Design Parameters ◽  
Structural Constraints ◽  
Aerodynamic Optimization ◽  
Pressure Losses ◽  
Turbine Vane ◽  
Gradient Based ◽  
Adjoint Approach ◽  
Multi Body

Abstract This work presents a 2D optimization of a multi-body turbine vane frame (TVF), a particular configuration that can lead to considerable shortening of the aero-engine shaft as well as weight reduction. Traditionally, the turbine vane frame is used to guide the flow from the high pressure (HP) turbine to the low pressure (LP) turbine. Current designs have a mid turbine frame equipped with non lifting bodies that have structural and servicing functions, while multi-body configurations are characterized by the fact that, in order to shorten the duct length, the mid turbine struts are merged with the LP stator vanes, traditionally located downstream. This design architecture consists therefore of a multi-body vane row, where lifting long-chord struts replace some of the low pressure vane airfoils. However, the bulky struts cause significant aerodynamics losses and penalize the aerodynamics of the small vanes. The objective of the present work is to numerically optimize a TVF geometry with multi-body architecture using a gradient based algorithm coupled with the adjoint approach, enabling the use of a rich design space. Steady-state CFD simulations have been used to this end. The aim of this study is to reduce the total pressure losses of the TVF, while imposing several aerodynamic and structural constraints. The parametrization of the TVF geometry represents the airfoil shapes and their relative pitch-wise positions. The outcome of the optimization is to evaluate the potential improvements introduced by the optimized TVF geometry and to quantify the influence of the different design parameters on the total pressure losses.

Numerical Optimization of the Defrosting Performance of the Vehicle Based on Discrete Adjoint Approach

2021 ◽  
Vol 22 (1) ◽  
pp. 109-118
Author(s):  
Sishi Cao ◽  
Zhifei Zhang ◽  
Yunwei Huang ◽  
Quanzhou Zhang ◽  
Zhongming Xu
Keyword(s):  
Numerical Optimization ◽  
Discrete Adjoint ◽  
Adjoint Approach

Reduction of Airframe Noise Components Using a Discrete Adjoint Approach

2017 ◽  
Author(s):  
Beckett Zhou ◽  
Tim A. Albring ◽  
Nicolas R. Gauger ◽  
Carlos Ilario ◽  
Thomas D. Economon ◽  
...  
Keyword(s):  
Airframe Noise ◽  
Discrete Adjoint ◽  
Adjoint Approach

scholarly journals Continuous Adjoint Approach for the Spalart-Allmaras Model in Aerodynamic Optimization

AIAA Journal ◽  
2012 ◽  
Vol 50 (3) ◽  
pp. 631-646 ◽  
Author(s):  
Alfonso Bueno-Orovio ◽  
Carlos Castro ◽  
Francisco Palacios ◽  
Enrique Zuazua
Keyword(s):  
Aerodynamic Optimization ◽  
Adjoint Approach ◽  
Continuous Adjoint

Optimizing a Boundary-Layer-Ingestion Offset Inlet by Discrete Adjoint Approach

AIAA Journal ◽  
2010 ◽  
Vol 48 (9) ◽  
pp. 2008-2016 ◽  
Author(s):  
Byung Joon Lee ◽  
Meng-Sing Liou ◽  
Chongam Kim
Keyword(s):  
Boundary Layer ◽  
Discrete Adjoint ◽  
Adjoint Approach
Sign in / Sign up

Export Citation Format

Share Document