Adrian Parrado | University of Brighton (original) (raw)

Papers by Adrian Parrado

International Symposium of Sustainable Aviation, 2019

Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has shown to pos... more Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has
shown to possess amazing properties that outpower any other material known to mankind;
it is 300 times stronger than A36 structural steel and it has a Young’s Modulus of 1 TPa
[1]. Its mechanical and electrical properties have been thoroughly tested, but its
aerodynamic properties have just been slightly experimented with. Recent studies have
shown that Graphene has the potential to reduce drag on larger bodies such as aircrafts
by letting fluid slip over its surface, therefore the no-slip condition doesn’t apply to
graphene, unlike to all other conventional materials. This project is concerned with
predicting such a reduction in drag for a surface coated with Graphene. The initial phase
of the project compared Computational Fluid Dynamics to Molecular Dynamics
simulations, which showed that CFD was unable to analyse surface interactions while
MD could, with very few assumptions. Results from MD simulation indeed showed slip
occurring and the changing velocity profiles indicated reduction in predicted parasitic
drag of up to 40%, which if applied to aircraft, a considerable fuel consumption reduction
would be achieved. The project also focused on how the shape of the non-dimensional
velocity profile changed with an increasing speed, and it was shown that a flow in slip
condition can maintain its parabolic shape for much faster speeds, which means the flow
would only become turbulent at a much faster flow velocity.

Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aero... more Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aeronautical Engineering.

Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aero... more Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aeronautical Engineering.

Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has shown to pos... more Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has
shown to possess amazing properties that outpower any other material known to mankind;
it is 300 times stronger than A36 structural steel and it has a Young’s Modulus of 1 TPa
[1]. Its mechanical and electrical properties have been thoroughly tested, but its
aerodynamic properties have just been slightly experimented with. Recent studies have
shown that Graphene has the potential to reduce drag on larger bodies such as aircrafts
by letting fluid slip over its surface, therefore the no-slip condition doesn’t apply to
graphene, unlike to all other conventional materials. This project is concerned with
predicting such a reduction in drag for a surface coated with Graphene. The initial phase
of the project compared Computational Fluid Dynamics to Molecular Dynamics
simulations, which showed that CFD was unable to analyse surface interactions while
MD could, with very few assumptions. Results from MD simulation indeed showed slip
occurring and the changing velocity profiles indicated reduction in predicted parasitic
drag of up to 40%, which if applied to aircraft, a considerable fuel consumption reduction
would be achieved. The project also focused on how the shape of the non-dimensional
velocity profile changed with an increasing speed, and it was shown that a flow in slip
condition can maintain its parabolic shape for much faster speeds, which means the flow
would only become turbulent at a much faster flow velocity.

International Symposium of Sustainable Aviation, 2019

Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has shown to pos... more Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has
shown to possess amazing properties that outpower any other material known to mankind;
it is 300 times stronger than A36 structural steel and it has a Young’s Modulus of 1 TPa
[1]. Its mechanical and electrical properties have been thoroughly tested, but its
aerodynamic properties have just been slightly experimented with. Recent studies have
shown that Graphene has the potential to reduce drag on larger bodies such as aircrafts
by letting fluid slip over its surface, therefore the no-slip condition doesn’t apply to
graphene, unlike to all other conventional materials. This project is concerned with
predicting such a reduction in drag for a surface coated with Graphene. The initial phase
of the project compared Computational Fluid Dynamics to Molecular Dynamics
simulations, which showed that CFD was unable to analyse surface interactions while
MD could, with very few assumptions. Results from MD simulation indeed showed slip
occurring and the changing velocity profiles indicated reduction in predicted parasitic
drag of up to 40%, which if applied to aircraft, a considerable fuel consumption reduction
would be achieved. The project also focused on how the shape of the non-dimensional
velocity profile changed with an increasing speed, and it was shown that a flow in slip
condition can maintain its parabolic shape for much faster speeds, which means the flow
would only become turbulent at a much faster flow velocity.

Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aero... more Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aeronautical Engineering.

Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aero... more Final year report submitted in partial fulfilment of the requirements for the degree of Meng Aeronautical Engineering.

Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has shown to pos... more Since its isolation in 2004, Graphene, a 1-molecule thick layer of carbon atoms, has
shown to possess amazing properties that outpower any other material known to mankind;
it is 300 times stronger than A36 structural steel and it has a Young’s Modulus of 1 TPa
[1]. Its mechanical and electrical properties have been thoroughly tested, but its
aerodynamic properties have just been slightly experimented with. Recent studies have
shown that Graphene has the potential to reduce drag on larger bodies such as aircrafts
by letting fluid slip over its surface, therefore the no-slip condition doesn’t apply to
graphene, unlike to all other conventional materials. This project is concerned with
predicting such a reduction in drag for a surface coated with Graphene. The initial phase
of the project compared Computational Fluid Dynamics to Molecular Dynamics
simulations, which showed that CFD was unable to analyse surface interactions while
MD could, with very few assumptions. Results from MD simulation indeed showed slip
occurring and the changing velocity profiles indicated reduction in predicted parasitic
drag of up to 40%, which if applied to aircraft, a considerable fuel consumption reduction
would be achieved. The project also focused on how the shape of the non-dimensional
velocity profile changed with an increasing speed, and it was shown that a flow in slip
condition can maintain its parabolic shape for much faster speeds, which means the flow
would only become turbulent at a much faster flow velocity.