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Cellular Detonations in Two Dimensions

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Contact: F.X.Timmes
my one page vitae,
full vitae,
research statement, and
teaching statement.

Basic Picture

A real detonation has a rich cellular structure quite unlike the simple 1D picture.

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1D picture
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2D & 3D picture
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Maximum pressure triple-point tracks



On the Cellular Structure of Carbon Detonations (2000)
In this article we present the results of a numerical study on two-dimensional carbon detonations. For an upstream density of 10$^7$ g cm$^{-3}$ the length-to-width ratio of the detonation cells is about 1.6 and is not strongly dependent on the spatial resolution of the simulation. However, the curvature of the weak incident shocks, strength of the triple points and transverse waves, and sizes of the underreacted and overreacted regions all depend strongly on the spatial resolution of the calculation. These resolution studies help define the minimum resolution required by multidimensional Type Ia supernovae models where the cellular structure of a detonation front is a key feature of the model.

These 2D and 3D cellular detonation models won the Gordon Bell Prize in High Performance Computing, Special Category at Supercomputing 2000.

Additional 2D and 3D visualizations from this effort are avaliable.


Pressure:
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Initial conditions
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Gone cellular
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Unresolved Pressure
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More resolved Pressure
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Unresolved Max Presure
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More resolved Max Presure
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Max pressure movie
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Pressure movie
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Pressure + grid movie



Temperature, Fuel (carbon), and Ashes (silicon)

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Unresolved Temperature
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More resolved Temperature
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Unresolved Carbon
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More resolved Carbon
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Unresolved Silicon
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More resolved Silicon
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Silicon movie
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Silicon + grid movie