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Constructive Theory of Ordinals

open access: yes, 2023
In Chapter 3 of his Notes on constructive mathematics, Martin-L{ö}f describes recursively constructed ordinals. He gives a constructively acceptable version of Kleene's computable ordinals. In fact, the Turing definition of computable functions is not needed from a constructive point of view. We give in this paper a constructive theory of ordinals that
Coquand, Thierry   +2 more
openaire   +3 more sources

Constructal Theory and Aeroelastic Design of Flexible Flying Wing Aircraft

open access: yesAerospace, 2017
The aeroelastic behavior of high-aspect-ratio very flexible flying wing is highly affected by the geometric nonlinearities of the aircraft structure. This paper reviews the findings on how these nonlinearities influence the structural and flight dynamics,
Pezhman Mardanpour, Siavash Rastkar
doaj   +1 more source

Accessing the Influence of Hess-Murray Law on Suspension Flow through Ramified Structures [PDF]

open access: yes, 2013
The present study focuses on fluid flow and particle transport in symmetric T-shaped structures formed by tubes with circular and square cross-section.
Miguel, A. F., Serrenho, Ana
core   +1 more source

Constructal design: A survey

open access: yesComputer Assisted Methods in Engineering and Science, 2022
This paper gives a review of the new Bejan's constructal theory and its various applications to design and optimization. According to Bejan, the objective and constraints principle used in engineering is the same mechanism from which the geometry in ...
Jean Luc Marcelin
doaj  

Multi-Objective Constructal Optimization for Marine Condensers

open access: yesEnergies, 2021
A marine condenser with exhausted steam as the working fluid is researched in this paper. Constructal designs of the condenser are numerically conducted based on single and multi-objective optimizations, respectively. In the single objective optimization,
Huijun Feng   +4 more
doaj   +1 more source

Constructal theory of global circulation and climate [PDF]

open access: yes, 2006
The constructal law states that every flow system evolves in time so that it develops the flow architecture that maximizes flow access under the constraints posed to the flow.
Bejan, A, Reis, A. Heitor
core   +1 more source

A Constructal-Theory-Based Methodology to Determine the Configuration of Empty Channels Used in the Resin Impregnation of a Square Porous Plate

open access: yesFluids, 2023
Liquid composite molding techniques are largely used to produce pieces such as truck cabins or wind turbine blades. The liquid resin infusion processes use a network of injection channels to improve the resin flow through a porous-reinforced medium.
Glauciléia Maria Cardoso Magalhães   +2 more
doaj   +1 more source

Dendritic design as an archetype for growth patterns in Nature: fractal and constructal views [PDF]

open access: yes, 2014
The occurrence of configuration (design, shape, structure, rhythm) is a universal phenomenon that occurs in every flow system. Dendritic configuration (or tree-shaped configurations) is ubiquitous in nature and likely to arise in both animate and ...
Miguel, A. F.
core   +2 more sources

Constructive Tensor Field Theory [PDF]

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2016
We provide an up-to-date review of the recent constructive program for field theories of the vector, matrix and tensor type, focusing not on the models themselves but on the mathematical tools used.
openaire   +3 more sources

Constructal theory of pattern formation [PDF]

open access: yesHydrology and Earth System Sciences, 2007
This review article shows that the occurrence of macroscopic flow configuration is a universal natural phenomenon that can be explained and predicted on the basis of a principle of physics (the constructal law): "For a flow system to persist in time
A. Bejan
doaj  

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