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Capa reticular en 3D para reducir la resistencia de cuerpos romos


Oferta Tecnológica
Una spin-out de una universidad británica ha desarrollado una nueva capa reticular en 3D que reduce la resistencia, ruido y vibraciones de cuerpos romos, como trenes de aterrizaje, camionetas y tubos ascendentes de petróleo y gas. Esta capa cambia las condiciones límite, desde la ausencia de deslizamiento hasta el deslizamiento parcial, ya que el flujo puede moverse en el límite entre el flujo externo y la capa permeable. El material ha sido impreso en 3D para facilitar el prototipado rápido y reducir el coste de las pruebas en túnel aerodinámico. La universidad busca socios con el fin de establecer acuerdos de fabricación o comercialización con asistencia técnica.


3-D woven lattices for drag reduction of bluff bodies
A UK university spin-put has developed an innovative 3-D lattice skin that reduces drag, noise and vibrations of bluff bodies such as landing gears, cargo trucks, oil and gas riser pipes. The 3-D lattice skin changes boundary conditions from no-slip to a ´partial´ slip as the flow can move at the boundary between the external flow and the permeable skin. The university is looking for partners for manufacturing agreement or commercial agreement with technical assistance.
The reduction in fuel consumption, to reduce C02 emissions, has been acknowledged as an urgent priority. One way to reduce fuel consumption is to improve the efficiency of the engines. However,
advancements in internal combustion engine design and the implementation of ´smart´ controllers have been yielding
diminishing returns. Electric and hybrid-electric drive systems offer an alternative, but current battery technology limits power and range. Since over 50% of a road vehicle´s fuel
burn at cruise conditions is directed to overcoming aerodynamic drag, this is an attractive target for technological development.
A UK university spin-out jointly with US partners tackles this issue by developing a 3-D woven lattice permeable skin. The new material regularizes flow around bluff bodies, thereby, reducing drag, vortex intensity, aerodynamic noise and vortex induced vibrations.
The 3-D lattice skin creates a permeable boundary with a portion of the flow being transported in the skin. It changes boundary conditions from no-slip to a ´partial´ slip as the flow can move at the boundary between the external flow and the permeable skin. The permeable skin also transports the fluid from the high pressure region (incoming flow) to the low pressure region in the lee side of the body due to the suction produced by the negative pressure in the wake. Woven material was 3D printed to enable rapid prototyping and to reduce the cost of wind tunnel testing.
The group is offering commercial agreement with technical assistance to partners who want to uptake the permeable lattice skin technology to the market. A manufacturing agreement is also offered to partners able to provide the appropriate techniques of mass production of the lattices.
Advantages and Innovations:
The advantage of the 3-D woven lattice material as a surface layer that regularizes the flow around a bluff body is that this material has multi-beneficial effects on 1) drag reduction, 2) attenuation of flow-induced vibrations, and 3) aerodynamic noise minimization. 3-D woven lattice architectures allow for passive flow control (without the need for external energy supply) around bluff bodies with restricted shape due to their functionality such as cargo trucks, train cars, wind turbine towers, etc. The woven material can be easily shaped to fit on various geometries and incorporated into existing manufacturing processes (from composites to metallic plates).
Stage of Development:
Available for demonstration
Patent(s) applied for but not yet granted

Partner sought

Type and Role of Partner Sought:
Seeking partners to deploy the permeable lattice skin technology in aerospace, navy, energy and automotive applications, with possibility to optimize the skin design to fit different body shapes. Manufacturing partners are needed to develop mass production techniques.


Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
Languages Spoken:


Technology Keywords:
02011001 Aeronautical technology / Avionics
02007005 Composite materials
02007019 Lightweight materials