atmosphere_csdl
Module Contents
Classes
Attributes
- class atmosphere_csdl.SimpleAtmosphereCSDL(**kwargs)
Bases:
csdl.Model- define()
User defined method to define runtime behavior. Note: the user never _calls_ this method. Only the Simulator class constructor calls this method.
Example
- def define(self):
self.create_input(‘x’) m = 5 b = 3 y = m*x + b self.register_output(‘y’, y)
# compile using Simulator imported from back end… sim = Simulator(Example()) sim[‘x’] = -3/5 sim.run() print(sim[‘y’]) # expect 0 ```
- initialize()
User defined method to declare parameter values. Parameters are compile time constants (neither inputs nor outputs to the model) and cannot be updated at runtime. Parameters are intended to make a Model subclass definition generic, and therefore reusable. The example below shows how a Model subclass definition uses parameters and how the user can set parameters when constructing the example Model subclass.
Example
- def initialize(self):
self.parameters.declare(‘num_times’, types=int) self.parameters.declare(‘step_size’, types=float) self.parameters.declare(‘surface’, types=dict)
- def define(self):
num_times = self.parameters[‘num_times’] step_size = self.parameters[‘step_size’] surface = self.parameters[‘surface’] name = surface[‘name’] # str symmetry = surface[‘symmetry’] # bool mesh = surface[‘mesh’] # numpy array
# define runtime behavior…
- surface = {
‘name’: ‘wing’, ‘symmetry’: False, ‘mesh’: mesh,
}
# compile using Simulator imported from back end… sim = Simulator(
- Example(
num_times=100, step_size=0.1, surface=surface,
),
)
- atmosphere_csdl.P11 = 22629.0
- atmosphere_csdl.P25 = 2487.9
- atmosphere_csdl.Ps = 101325.0
- atmosphere_csdl.R = 287
- atmosphere_csdl.S1 = 110.4
- atmosphere_csdl.Ts = 288.16
- atmosphere_csdl.g = 9.806
- atmosphere_csdl.gamma = 1.4
- atmosphere_csdl.mu0 = 1.735e-05
- atmosphere_csdl.num = 500
- atmosphere_csdl.rho11 = 0.3639
- atmosphere_csdl.rho25 = 0.04
- atmosphere_csdl.rhoS = 1.225