# Schedule for Feb 2013

## Advanced Astrophysical Fluid Dynamics

### → This is a 7.5hp-course

Wed 13 Feb, 10-12

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Hydrodynamic equations, specific entropy, hydrostatic equilibrium*

Thu 14 Feb, 10-12

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Atmospheric waves (p and g modes)
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Mon 18 Feb, 10-12

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Helioseismology, Abel's integral equation, Duvall law,
internal variation of sound speed
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Mon 18 Feb, 13-15

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Local helioseismology,
solving eigenvalue problems numerically,
numerical Fourier transformation,
setting up wave problems on the computer
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Tue 19 Feb, 10-12

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Convection and mixing length theory;
dimensional analysis, blast waves;
computer exercises: waves and energy conservation
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Wed 20 Feb, 10-12

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Introduction to Pencil Code, nonlinear sound waves
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Thu 21 Feb, 10-12

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Thermal instability, stable and unstable fixed points,
linear stability analysis, Field criterion
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Thu 21 Feb, 13-15

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Presentation of results of exercises, discussion of project work
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Thu 14 Mar, 10-12

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Supersonic flows via a critical point;
Parker wind, iterative solution, graphical solution,
time-dependent solution with the Pencil Code
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Thu 14 Mar, 13-15

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Viscous effects on the shocks, viscous heating,
effect on conservation equations
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Thu 21 Feb, 10-12

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Consulation meeting:
p-modes in a Cartesian slab model;
non-local mixing length theory;
magnetic effects in mixing length theory
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Mon 25 Mar, 10-12

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Magnetic fields, magnetic support and coronal mass ejections;
Alfven waves, slow, fast, and magnetorotational instability;
Computer exercise: magnetic buoyancy
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Mon 25 Mar, 13-15

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Magnetic helicity,
laminar and turbulent dynamos,
computer exercise: dynamo excitation.
first-order smoothing, τ approximation, catastrophic quenching
Computer exercises: migratory Parker dynamo, phase relation,
*

Tue 26 Mar, 10-12

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Solar differential rotation, Λ effect, near-surface shear layer
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Thu 28 Mar, 10-12

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Computer exercises: magnetic relaxation, mean-field dynamo models
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Thu 28 Mar, 13-15

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Aspects of relativistic fluid dynamics and MHD
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Thu 4 Apr, 10-12

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Thin accretion disc theory
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Wed 8 May, 15:30-17:00 + BBQ

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Student presentations
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$Date: 2013/10/20 08:08:16 $, $Author: brandenb $, $Revision: 1.7 $