scholarly journals Parametric Design Analysis And Shape Optimization Of Percutaneous Aortic Valve Stents

2009 ◽  
Vol 3 (1) ◽  
pp. 1-4
Author(s):  
Gideon Praveen Kumar ◽  
Lazar Mathew
Keyword(s):  
Aortic Valve ◽  
Shape Optimization ◽  
Parametric Design ◽  
Design Analysis

scholarly journals Parametric design analysis of elliptical shroud profile

AIMS Energy ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1147-1169
Author(s):  
Salih Nawaf Akour ◽  
◽  
Mahmoud Azmi Abo Mhaisen
Keyword(s):  
Wind Turbine ◽  
Wind Velocity ◽  
Parametric Design ◽  
Large Family ◽  
Design Analysis ◽  
Average Wind ◽  
Wind Velocities ◽  
Inlet Length ◽  
Commercial Software Package ◽  
Exact Shape

<abstract> <p>Parametric design analysis for Eccentric Rotated Ellipsoid (ERE) shroud profile is conducted whereas the design model is validated experimentally. A relation between shroud inlet, length and exit diameter is established, different ratios related to the wind turbine diameter are introduced, and solution for different ERE family curves that passes on the inlet, throat, and exit points is studied. The performance of the ERE shroud is studied under different wind velocities ranging from 5–10 m/s.</p> <p>The method used in creating the shroud profile is by solving the ERE curve equations to generate large family of solutions. The system is modeled as axisymmetric system utilizing commercial software package. The effect of the parameters; shroud length, exit diameter, inlet diameter, turbine position with respect to the shroud throat, and wind velocity are studied. An optimum case for each shroud length, exit diameter and location of the shroud with respect to the wind turbine throat axis are achieved.</p> <p>The simulation results show an increase in the average wind velocity by 1.63 times of the inlet velocity. This leads to a great improvement in the wind turbine output power by 4.3 times of bare turbine. One of the achieved optimum solutions for the shroud curves has been prototyped for experimental validation. The prototype has been manufactured using 3D printing technology which provides high accuracy in building the exact shape of shroud design curve. The results show very good agreement with the experimental results.</p></abstract>

Production Design Analysis for Airfoil Shape Optimization

2021 ◽  
Author(s):  
Pranoti Shinde ◽  
S. S. Ohol ◽  
V. K. Tripathi
Keyword(s):  
Shape Optimization ◽  
Design Analysis

scholarly journals Design and numerical simulation for the development of an expandable paediatric heart valve

2020 ◽  
pp. 039139882097750
Author(s):  
Monica M Kerr ◽  
Terence Gourlay
Keyword(s):  
Numerical Simulation ◽  
Aortic Valve ◽  
Immersed Boundary Method ◽  
Inverse Relationship ◽  
Parametric Design ◽  
Somatic Growth ◽  
Parameter Design ◽  
Immersed Boundary ◽  
Aspect Ratios ◽  
Base Radius

Current paediatric valve replacement options cannot compensate for somatic growth, leading to an obstruction of flow as the child outgrows the prosthesis. This often necessitates an increase in revision surgeries, leading to legacy issues into adulthood. An expandable valve concept was modelled with an inverse relationship between annulus size and height, to retain the leaflet geometry without requiring additional intervention. Parametric design modelling was used to define certain valve parameter aspect ratios in relation to the base radius, Rb, including commissural radius, Rc, valve height, H and coaptation height, x. Fluid-structure simulations were subsequently carried out using the Immersed Boundary method to radially compress down the fully expanded aortic valve whilst subjecting it to diastolic and systolic loading cycles. Leaflet radial displacements were analysed to determine if valve performance is likely to be compromised following compression. Work is ongoing to optimise valvular parameter design for the paediatric patient cohort.

Parametric Urban Design Thinking: Shared Patterns in Design by Algorithm and Design by Drawing

2021 ◽  
pp. 0739456X2110536
Author(s):  
Olgu Çalışkan ◽  
Yavuz Baver Barut ◽  
Gökhan Ongun
Keyword(s):  
Urban Design ◽  
Design Thinking ◽  
Parametric Design ◽  
Design Analysis ◽  
Design Methods ◽  
Specific Context

The paper suggests a focused examination of the processes of drafting-based design and parametric design in urbanism. It discusses how spatial design’s settled cognition would differ by using algorithmic systems through the altered relationships between the basic operations in design. To reveal the commonalities and distinctions between the two design methods, the authors present the detailed documentation of the workshop series, which experimented with both techniques within similar design contexts. By the design analysis, the idea of “parametric thinking” is revisited in the specific context of urban design.

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