Focusing on the Medically Ready for Discharge Patient Using a Reliable Design Strategy

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Nicholas Meo ◽  
Paul B. Cornia
Keyword(s):  
Design Strategy ◽  
Reliable Design

An Optimization Framework for PBCF Energy Saving Devices

2018 ◽  
Author(s):  
Stefano Gaggero ◽  
Diego Villa
Keyword(s):  
Energy Saving ◽  
Optimization Design ◽  
Design Strategy ◽  
Geometrical Parameters ◽  
High Fidelity ◽  
Propulsive Efficiency ◽  
Optimization Framework ◽  
Parametric Description ◽  
Reliable Design ◽  
Dynamics Analyses

The need of continuously improving propulsive efficiency encourages the development of energy saving devices, the understanding of their underlying principles and the validation of their effectiveness. In this work, a design by optimization of Propeller Boss Cap Fin (PBCF) devices is carried out using Computational Fluid Dynamics analyses. RANS calculations (by the OpenFOAM library) are applied in an automatic optimization design approach involving a parametric description of the main characteristics of PBCFs. The optimization is carried out with multiple purposes: identify a reliable design strategy necessary to customize the PBCF geometry based on the propeller functioning and evaluate the influence of alternative configurations and of main geometrical parameters in achieving higher efficiency. The use of high-fidelity RANS calculations confirm that the decrease of the hub vortex strength, the reduction of the net torque and the influence of the additional fins on blades performance are the major contributors to the increase of efficiency. Results of detailed analyses of optimal PBCF configurations show model scale increases of efficiency of about 1%.

Optimum Design of a 3-RRR Planar Parallel Manipulator with a Singularity-Free Workspace

2011 ◽  
Vol 86 ◽  
pp. 606-610 ◽  
Author(s):  
Ming Wang Gao ◽  
Xian Min Zhang ◽  
Zhi Wei Wu
Keyword(s):  
Parallel Manipulator ◽  
Design Space ◽  
Parallel Manipulators ◽  
Design Strategy ◽  
Geometrical Parameters ◽  
Kinematic Parameters ◽  
Planar Parallel Manipulator ◽  
Singular Loci ◽  
Reliable Design ◽  
Planar Parallel Manipulators

In this paper, a reliable design strategy, capable of optimally picking out the geometrical parameters of the 3-RRR planar parallel manipulators, is presented. The distribution charts for singular loci and usable workspace shape are obtained in the non-dimensional design space. Based on the singularity-free workspace and good force transition capacity, the optimum kinematic parameters are determined by means of the global conditioning index. An example shows that the strategy is useful for realizing the singularity-free workspace optimally.

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