Probabilistic Inverse Aerodynamic Design and Stability Analysis Response Surface Methodology for Natural Laminar Flow Wings from an Aircraft System Design Point of View

2003 ◽  
Author(s):  
Jae Lee ◽  
Dimitri Mavris ◽  
Daniel Schrage
Keyword(s):  
Response Surface Methodology ◽  
Stability Analysis ◽  
Laminar Flow ◽  
System Design ◽  
Response Surface ◽  
Point Of View ◽  
Aerodynamic Design ◽  
Design Point ◽  
Natural Laminar Flow ◽  
Aircraft System

scholarly journals Flux intensification during microfiltration of distillery stillage using a kenics static mixer

2017 ◽  
pp. 285-293
Author(s):  
Vesna Vasic ◽  
Aleksandar Jokic ◽  
Marina Sciban ◽  
Jelena Prodanovic ◽  
Jelena Dodic ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Flow Rate ◽  
Specific Energy Consumption ◽  
Point Of View ◽  
Transmembrane Pressure ◽  
Feed Flow Rate ◽  
Static Mixer ◽  
Economic Point ◽  
Mathematical Presentation

The present work studies the effect of operating parameters (pH, feed flow rate, and transmembrane pressure) on microfiltration of distillery stillage. Experiments were conducted in the presence of a Kenics static mixer as a turbulence promoter, and its influence on the flux improvement and specific energy consumption was examined. Response surface methodology was used to investigate the effect of selected factors on microfiltration performances. The results showed that response surface methodology is an appropriate model for mathematical presentation of the process. It was found that the use of a static mixer is justified at the feed flow rates higher than 100 L/h. In contrast, the use of a static mixer at low values of feed flow rate and transmembrane pressure has no justification from an economic point of view.

scholarly journals The Objective Space and the Formulation of Design Requirement in Natural Laminar Flow Optimization

2020 ◽  
Vol 10 (17) ◽  
pp. 5943 ◽  
Author(s):  
Shuyue Wang ◽  
Cong Wang ◽  
Gang Sun
Keyword(s):  
Laminar Flow ◽  
Design Space ◽  
Principal Component ◽  
Aerodynamic Design ◽  
Design Requirement ◽  
Pressure Drag ◽  
Design Variables ◽  
Objective Space ◽  
Natural Laminar Flow ◽  
The Impact

Design requirement is as important in aerodynamic design as in other industries because it sets up the objective for the samples in design space to approach. Natural Laminar Flow (NLF) optimization belongs to the type of aerodynamic design problems featured by the combination of distinct aerodynamic performance, where the design requirement is often formulated in form of summation of laminar-related performance and pressure drag performance with different weight assignment according to different perspectives. However, the formulations are rather experience-oriented and are decided non-quantitatively. Inspired by data manipulation approaches in design space (spanned by design variables of geometrical representation parameters) in many aerodynamic designs, this paper proposes new formulations of design requirement in NLF optimization via consideration of objective space (projection of design space through aerodynamics) and shows the impact of the corresponding formulation of design requirement to the result of NLF optimization in cases of transonic airfoil and aero engine compressor blade design from two perspectives: Pareto front convergence and improving effect of accessory performance. The paper uses Principal Component Analysis (PCA) to obtain the eigenvectors of objective space to extract the intrinsic information about specific problem. The method is realized in two cases with satisfactory result.

Aerodynamic Design of a Flying Wing Using Response Surface Methodology

2000 ◽  
Vol 37 (4) ◽  
pp. 562-569 ◽  
Author(s):  
Natasha E. Sevant ◽  
Malcolm I. G. Bloor ◽  
Michael J. Wilson
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Aerodynamic Design
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