Version 109 (modified by 11 years ago) ( diff ) | ,
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Planetary Nebula Library: Hydro Runs
Update 10/14: |
10,000K Jet traveling at 800km/s
On the left is a model with cooling and on the right is a model without cooling. Both are at time = 577.5 years.
Different plots for the 800 km/s hot jet with no cooling
Comparison between the new run (left) and the high resolution run (right)
Update 10/11: |
10,000K Jet Traveling at 300km/s
The following table shows a variety of 10,000K jets traveling at 300km/s.
Left | Right | |
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Densities | Constant | Stratified + Toroidal |
Resolution | Low = 20 zones/radius | High = 64 zones/radius |
Grid | 32x64 | 32x128 |
problem.f90 | Old | New (kills all x velocity in jet) |
Momentum Refinement | y | x&y |
Ambient | Resolution | Grid | problem.f90 | Momentum Refinement |
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Go here to find a list of changes that were made today.
Reason for Library
Here we explore a variety of possible parameters and environments that can shape planetary nebulae, presented in various forms. This library will record a number of combinations of different density backgrounds and types of flows and also any parameter changes within those different combinations. The environments and flow structures are listed below. (Go to the Clump + Jet page for models that include both a clump and jet.)
Environments:
- Constant Ambient: The surrounding density is initially constant.
- Stratified Ambient: The surrounding density falls off as 1/r^{2}.
- Toroidal Ambient: The surrounding density decays from the equator to the pole as defined in Frank & Mellema, 1994 Apj by the following variables:
- describes the contrast in density of the torus from the pole to the equator.
- describes how elliptical or spherical the torus is. Small values coincide with a more elliptical torus while values closer to 1 indicate a more spherical torus.
Flow Structures:
- Clump: A spherical cloud of gas.
- Jet: A constant stream of gas.
- Diverging Wind: A constant stream of gas that sweeps an arc in the surrounding medium.
Below are the standard parameters used in each run. Any changes to these parameters will be noted in the table preceding the image table.
Standard Parameters | |
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Jet Radius | 500 AU |
Jet Density | 40,000 cm^{-3} |
Jet Temperature | 10 K |
Ambient Density | 400 cm^{-3} |
Ambient Temperature | 1 K |
Torus Alpha ( | ).7 |
Torus Beta ( | ).8 |
(See Ruka's PN Page for MHD models.)
Toroidal + Stratified Ambient
Jet
Jet Velocity = 100 km/s | Jet Velocity = 200 km/s | Jet Velocity = 300 km/s | Velocity Comparison |
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movie | movie | movie | |
movie | movie | movie |
Changes to Standard Parameters | |
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Jet Temperature | 10,000 K |
Jet Velocity = 100 km/s | Jet Velocity = 200 km/s | Jet Velocity = 300 km/s | Jet Velocity = 300 km/s High Resolution | Jet Velocity = 800 km/s |
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movie | movie | movie | movie Density movie with mesh | movie *Note time difference!* |
movie | movie | movie | movie | movie |
movie with mesh |
Changes to Standard Parameters | |
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Jet Temperature | 1,000,000 K |
Jet Velocity = 300 km/s |
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movie |
movie |
Changes to Standard Parameters | |
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Jet Temperature | 10,000 K |
Ambient Density | 1,000 cm^{-3} |
Jet Velocity = 300 km/s |
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movie |
movie |
Clump
Clump Velocity = 100 km/s | Clump Velocity = 200 km/s | Clump Velocity = 300 km/s | Velocity Comparison |
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movie | movie | movie | |
movie | movie | movie |
Diverging Wind
Jet Velocity = 300km/s |
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movie |
Constant Ambient
All constant ambient density models have the following change to the standard parameters listed at the top of this page.
Changes to Standard Parameters | |
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Ambient Density | 1 cm^{-3} |
Jet
Jet Velocity = 100 km/s | Jet Velocity = 200 km/s | Jet Velocity = 300 km/s | Velocity Comparison |
---|---|---|---|
movie | movie | movie | |
movie | movie | movie |
Changes to Standard Parameters | |
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Jet Temperature | 10,000 K |
Jet Velocity = 100 km/s | Jet Velocity = 200 km/s | Jet Velocity = 300 km/s | Velocity Comparison |
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movie | |||
movie |