An inverse design approach for broadband polarization splitting

2021 ◽  
Author(s):  
Gregory Roberts ◽  
Conner Ballew ◽  
Tianzhe Zheng ◽  
Andrei Faraon
Keyword(s):  
Design Approach ◽  
Inverse Design ◽  
Polarization Splitting

Design Optimization of Cryogenic Pump Inducer Considering Suction Performance and Cavitation Instability

2011 ◽  
Author(s):  
Hiroyoshi Watanabe ◽  
Hiroshi Tsukamoto
Keyword(s):  
Pressure Distribution ◽  
Design Optimization ◽  
Surface Pressure ◽  
Design Approach ◽  
Inverse Design ◽  
Blade Surface ◽  
Free Vortex ◽  
Surface Pressure Distribution ◽  
Cavitation Instability ◽  
Suction Performance

This paper presents the result of design optimization for three-bladed pump inducer using a three-dimensional (3-D) inverse design approach, Computational Fluid Dynamics (CFD) and DoE (Design of Experiments) taking suction performance and cavitation instability into consideration. The parameters to control streamwise blade loading distribution and spanwise work (free vortex or non-free vortex) for inducer were chosen as design optimization variables for the inverse design approach. Cavitating and non-cavitating performances for inducers designed using the design variables arranged in the DoE table were analyzed by steady CFD. Objective functions for non-cavitating operating conditions were the head and efficiency of inducers at a design flow (Qd), 80% Qd and 120% Qd. The volume of the inducer cavity region with a void ratio above 50% was selected as the objective function for inducer suction performance. In order to evaluate cavitation instability by steady CFD, the dispersion of the blade surface pressure distribution on each blade was selected as the evaluation parameter. This dispersion of the blade surface pressure distribution was caused by non-uniformity in the cavitation length that was developed on each inducer blade and increased when the cavitation number was reduced. The effective design parameters on suction performance and cavitation instability were confirmed by sensitivity analysis during the design optimization process. Inducers with specific characteristics (stable, unstable) designed using the effective parameters were evaluated through experiments.

Toward high-performance plasmonic metasurfaces: from forward to inverse design approach

2021 ◽  
Author(s):  
Chia-Hsiang Lin ◽  
Yu-Sheng Chen ◽  
Jhao-Ting Lin ◽  
Yi-Chen Cheng ◽  
Amir Hassanfiroozi ◽  
...  
Keyword(s):  
High Performance ◽  
Design Approach ◽  
Inverse Design

A Constrainted Design Approach for NLF Airfoils by Coupling Inverse Design and Optimal Techniques

2011 ◽  
Author(s):  
L. Deng ◽  
Y. W. Gao ◽  
Z. D. Qiao ◽  
Jiachun Li ◽  
Song Fu
Keyword(s):  
Design Approach ◽  
Inverse Design

Theoretical Prediction and Experimental Realization of New Stable Inorganic Materials Using the Inverse Design Approach

2013 ◽  
Vol 135 (27) ◽  
pp. 10048-10054 ◽  
Author(s):  
Andriy Zakutayev ◽  
Xiuwen Zhang ◽  
Arpun Nagaraja ◽  
Liping Yu ◽  
Stephan Lany ◽  
...  
Keyword(s):  
Theoretical Prediction ◽  
Inorganic Materials ◽  
Design Approach ◽  
Inverse Design ◽  
Experimental Realization

scholarly journals An AM-oriented vehicle chassis’ A-Pillar Design Approach

2020 ◽  
Vol 318 ◽  
pp. 01027
Author(s):  
Agisilaos Kyriazis ◽  
Dimitrios Koulocheris ◽  
Stamatios Polydoras ◽  
Clio Vossou
Keyword(s):  
3D Printing ◽  
Modal Analysis ◽  
Dynamic Characteristics ◽  
Economies Of Scale ◽  
Design Approach ◽  
Inverse Design ◽  
Structural Systems ◽  
Starting Point ◽  
Vehicle Chassis ◽  
Design Freedom

Design and production of highly demanding structural systems, such as the chassis, still rely on conventional forming and welding approaches, both because of their proven performance and the economies of scale achieved. Nevertheless, manufacturing of several chassis’ segments is also expected to soon gradually switch towards AM, for increased design freedom and optimized performance. This paper proposes an alternative design approach for the A-pillar, a typical passenger car chassis segment; a design suitable in form for AM and equally capable in terms of its dynamic behavior, without undermining the chassis’ safety. Prior A-pillar designs along with already published innovative AM-suited design approaches are reviewed. Moreover, these serve as a starting point for an inverse design towards the intended new AM-suited A-pillar alternative. Emphasis is given in the dynamic characteristics of the new structure, through proper modal analysis performed. Finally, the presented research concludes with a scaled-down assessment and verification prototype of the new design, planned to be built via FDM 3D Printing. The prototype is expected to demonstrate primary, as well as secondary/latent benefits from the use of AM in A-pillars, such as the increased diagonal visibility for drivers and passengers, arising from the redesigned, mesh-like form of the segment.

An inverse design approach for magnetic lenses operated under infinite magnification condition

Optik ◽  
2013 ◽  
Vol 124 (18) ◽  
pp. 3523-3526 ◽  
Author(s):  
Wasan J. Kadhem ◽  
Hassan N. Al-Obaidi
Keyword(s):  
Design Approach ◽  
Inverse Design
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