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ambiance-1.3.1
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مشاهده بیشترتوضیحات
A full implementation of the ICAO standard atmosphere 1993
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | ambiance-1.3.1 |
| نام | ambiance |
| نسخه کتابخانه | 1.3.1 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Aaron Dettmann |
| ایمیل نویسنده | dettmann@kth.se |
| آدرس صفحه اصلی | https://github.com/airinnova/ambiance/ |
| آدرس اینترنتی | https://pypi.org/project/ambiance/ |
| مجوز | Apache License 2.0 |
.. image:: https://img.shields.io/pypi/v/ambiance.svg?style=flat
:target: https://pypi.org/project/ambiance/
:alt: Latest PyPI version
.. image:: https://readthedocs.org/projects/ambiance/badge/?version=latest
:target: https://ambiance.readthedocs.io/en/latest/?badge=latest
:alt: Documentation Status
.. image:: https://img.shields.io/badge/license-Apache%202-blue.svg
:target: https://github.com/airinnova/ambiance/blob/master/LICENSE.txt
:alt: License
.. image:: https://app.travis-ci.com/airinnova/ambiance.svg?branch=master
:target: https://app.travis-ci.com/airinnova/ambiance
:alt: Build status
.. image:: https://codecov.io/gh/airinnova/ambiance/branch/master/graph/badge.svg
:target: https://codecov.io/gh/airinnova/ambiance
:alt: Coverage
|
.. image:: https://raw.githubusercontent.com/airinnova/ambiance/master/docs/source/_static/images/logo/logo.png
:target: https://github.com/airinnova/ambiance/
:alt: Ambiance
*Ambiance* is a full implementation of the ICAO standard atmosphere 1993 written in Python.
* `International Standard Atmosphere (Wikipedia) <https://en.wikipedia.org/wiki/International_Standard_Atmosphere>`_
* International Civil Aviation Organization ; Manual Of The ICAO Standard Atmosphere -- 3rd Edition 1993 (Doc 7488) -- extended to 80 kilometres (262 500 feet)
Basic usage
===========
Atmospheric properties are computed from an ``Atmosphere`` object which takes the altitude (geometric height) as input. For instance, to simply retrieve sea level properties, you can write:
.. code:: python
>>> from ambiance import Atmosphere
>>> sealevel = Atmosphere(0)
>>> sealevel.temperature
array([288.15])
>>> sealevel.pressure
array([101325.])
>>> sealevel.kinematic_viscosity
array([1.46071857e-05])
List of available atmospheric properties
----------------------------------------
* Collision frequency (``collision_frequency``)
* Density (``density``)
* Dynamic viscosity (``dynamic_viscosity``)
* Geometric height above `MSL <https://en.wikipedia.org/wiki/Sea_level>`_ (``h``)
* Geopotential height (``H``)
* Gravitational acceleration (``grav_accel``)
* Kinematic viscosity (``kinematic_viscosity``)
* Layer names (``layer_name``) [string array]
* Mean free path (``mean_free_path``)
* Mean particle speed (``mean_particle_speed``)
* Number density (``number_density``)
* Pressure (``pressure``)
* Pressure scale height (``pressure_scale_height``)
* Specific weight (``specific_weight``)
* Speed of sound (``speed_of_sound``)
* Temperature (``temperature``, ``temperature_in_celsius``)
* Thermal conductivity (``thermal_conductivity``)
Vector and matrix inputs
------------------------
*Ambiance* also handles list-like input (list, tuples, *Numpy* arrays). The following code demonstrates how to produce a temperature plot with *Matplotlib*. In the example, *Numpy*'s `linspace()` function is used to produce an array with altitudes.
.. code:: python
import numpy as np
import matplotlib.pyplot as plt
from ambiance import Atmosphere
# Create an atmosphere object
heights = np.linspace(-5e3, 80e3, num=1000)
atmosphere = Atmosphere(heights)
# Make plot
plt.plot(atmosphere.temperature_in_celsius, heights/1000)
plt.ylabel('Height [km]')
plt.xlabel('Temperature [°C]')
plt.grid()
plt.show()
The output is
.. image:: https://raw.githubusercontent.com/airinnova/ambiance/master/tests/plots/temperature.png
:alt: Temperature plot
Similarly, you can also pass in entire *matrices*. Example:
.. code:: python
>>> import numpy as np
>>> from ambiance import Atmosphere
>>> h = np.array([[0, 11, 12], [20, 21, 35], [0, 80, 50]])*1000
>>> h # Geometric heights in metres
array([[ 0, 11000, 12000],
[20000, 21000, 35000],
[ 0, 80000, 50000]])
>>> Atmosphere(h).temperature
array([[288.15 , 216.7735127 , 216.65 ],
[216.65 , 217.58085353, 236.51337209],
[288.15 , 198.63857625, 270.65 ]])
>>> Atmosphere(h).speed_of_sound
array([[340.29398803, 295.15359145, 295.06949351],
[295.06949351, 295.70270856, 308.29949587],
[340.29398803, 282.53793156, 329.798731 ]])
>>> Atmosphere([30000, 0]).layer_name
array(['stratosphere', 'troposphere'], dtype='<U42')
Instantiating from given pressure or density
--------------------------------------------
In some contexts it may be convenient to instantiate an ``Atmosphere`` object from a given ambient pressure or density. This can be easily achieved by using the ``Atmosphere.from_pressure()`` or ``Atmosphere.from_density()`` methods, respectively. Both methods return ``Atmosphere`` objects from which all other properties, like temperature, can be requested.
.. code:: python
>>> Atmosphere.from_pressure([80e3, 20e3]) # 80 kPa and 20 kPa
Atmosphere(array([ 1949.58557497, 11805.91571135]))
>>> Atmosphere.from_pressure([80e3, 20e3]).pressure
array([80000., 20000.])
>>> Atmosphere.from_density(1.0) # 1.0 kg/m^3
Atmosphere(array([2064.96635895]))
Complete user guide
-------------------
For a comprehensive and detailed user guide, please see the `complete documentation <https://ambiance.readthedocs.io/en/latest/>`_.
Installation
============
Pip (recommended)
-----------------
*Ambiance* is available on `PyPI <https://pypi.org/project/ambiance/>`_ and may simply be installed with
.. code::
pip install ambiance
Conda
-----
The package can be installed via the `Conda <https://anaconda.org/conda-forge/ambiance>`_ environment with
.. code::
conda install -c conda-forge ambiance
.. image:: https://img.shields.io/badge/recipe-ambiance-green.svg
:target: https://anaconda.org/conda-forge/ambiance
:alt: Conda Recipe
.. image:: https://img.shields.io/conda/dn/conda-forge/ambiance.svg
:target: https://anaconda.org/conda-forge/ambiance
:alt: Conda Downloads
.. image:: https://img.shields.io/conda/vn/conda-forge/ambiance.svg
:target: https://anaconda.org/conda-forge/ambiance
:alt: Conda Version
Requirements
============
Using *Ambiance* requires
* *Python 3.6* or higher
* *NumPy*
* *SciPy*
*For developers*: Recommended packages may be installed with the `requirements.txt`.
.. code::
pip install -r requirements.txt
License
=======
**License:** Apache-2.0
نیازمندی
| مقدار | نام |
|---|---|
| - | numpy |
| - | scipy |
زبان مورد نیاز
| مقدار | نام |
|---|---|
| >=3.6.0 | Python |
نحوه نصب
نصب پکیج whl ambiance-1.3.1:
pip install ambiance-1.3.1.whl
نصب پکیج tar.gz ambiance-1.3.1:
pip install ambiance-1.3.1.tar.gz