Week 6 Concept

a set of five tiles that were used in the Girih tiles are creation of tiling patterns for decoration of buildings in

Islamic architecture. They are known to have been used

since about the year 1200 and their arrangements found significant improvements starting with the Darb‐i Imam

shrine in Isfahan in Iran built in 1453

The Girih tiling pattern closely resembles Penrose tilings which is an aperiodic tiling system discovered by

Patterns and Structure Geometric tiling in Islamic Architecture

Periodic and ap periodic patterns foound in Islamic Architecture

Patteerns an nd Struccture Geometric tilin ng in Islamic Architecture

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Periodic and aperiodic patterns based on Girih tiles

Patterns and Structure Geometric tiling in Islamic Architecture

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Periodic and aperiodic patterns based on Girih tiles

Patterns and Structure Geometric tiling in Islamic Architecture

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An example of the Coanda effect

The Coanda effect is the tendency of a fluid jet to stay attached to an adjacent curved surface that is very well shaped, the principle was named after Romanian Henri Coanda, who was the first to recognise the practical application of the phenomenon in aircraft development.

In the instance of a stream of water attracting a spoon as it flows over the bowl, the Coanda effect is a result of surface tension of Van der Waals forces plus Newton’s second and third laws. The effect, in this case, is actually caused by attractive forces. In the instance of a gas flow over a convex curved surface in ambient gas, however, the Coanda effect is a result of the momentum of the gas and entrainment of ambient gas and has nothing to do with attractive forces. As a gas flows over a convex airfoil, the gas is drawn down to adhere to the airfoil by a combination of the greater pressure above the gas flow and the lower pressure below the flow caused by an evacuating effect of the flow itself, which as a result of shear flow, rarefies the slow‐moving fluid trapped between the flow and the upper surface of the airfoil.

Fluid dynamics

Fluid Dynamics in Architecture 5

Liquid will stick to a smooth surface

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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Two dimensional spatial system

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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Three dimensional spatial system

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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The tiling system applied to the surface

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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The tiling system

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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Example of the skin applied

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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The pattern is draped over the surfaces like water on a smooth surface evoking the look of the coanda effect

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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The skin can open and close to allow for light and wind to travel through the building

Concept

Geometric tiling in Islamic Architecture & fluid dynamics

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