Georg_Brantegger/Python-DT_Slot_3
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(forgot to stage changes in the Druckrohrleitung

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class
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Brantegger Georg
2022-07-06 11:07:53 +02:00
parent be8b5e29b2
commit cdc7e3546d
2 changed files with 23 additions and 33 deletions
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27
Druckrohrleitung/Druckrohrleitung_class_file.py
View File

@@ -19,7 +19,6 @@ class Druckrohrleitung_class:
density_unit = r'$\mathrm{kg}/\mathrm{m}^3$'
flux_unit = r'$\mathrm{m}^3/\mathrm{s}$'
length_unit = 'm'
pressure_unit = 'Pa'
time_unit = 's'
velocity_unit = r'$\mathrm{m}/\mathrm{s}$' # for flux and pressure propagation
volume_unit = r'$\mathrm{m}^3$'
@@ -30,7 +29,6 @@ class Druckrohrleitung_class:
density_unit_print = 'kg/m³'
flux_unit_print = 'm³/s'
length_unit_print = 'm'
pressure_unit_print = 'Pa'
time_unit_print = 's'
velocity_unit_print = 'm/s' # for flux and pressure propagation
volume_unit_print = 'm³'
@@ -65,14 +63,15 @@ class Druckrohrleitung_class:
else:
self.t_vec = np.arange(0,self.nt*self.dt,self.dt)
def set_initial_pressure(self,pressure,input_unit = 'Pa'):
p,_ = pressure_conversion(pressure,input_unit,target_unit=self.pressure_unit)
if np.size(p) == 1:
self.p0 = np.full_like(self.l_vec,p)
elif np.size(p) == np.size(self.l_vec):
self.p0 = p
def set_initial_pressure(self,pressure,pressure_unit,display_pressure_unit):
if np.size(pressure) == 1:
self.p0 = np.full_like(self.l_vec,pressure)
elif np.size(pressure) == np.size(self.l_vec):
self.p0 = pressure
else:
raise Exception('Unable to assign initial pressure. Input has to be of size 1 or' + np.size(self.l_vec))
self.pressure_unit = pressure_unit
self.pressure_unit_print = display_pressure_unit
#initialize the vectors in which the old and new pressures are stored for the method of characteristics
self.p_old = self.p0.copy()
@@ -102,7 +101,7 @@ class Druckrohrleitung_class:
v_old = self.v_old[-2] # @ second to last node (the one before the turbine)
self.v_boundary_res = v_reservoir # at new timestep
self.v_boundary_tur = v_turbine # at new timestep
self.p_boundary_res,_ = pressure_conversion(p_reservoir,input_unit_pressure,target_unit=self.pressure_unit)
self.p_boundary_res = p_reservoir
self.p_boundary_tur = p_old-rho*c*(v_turbine-v_old)+rho*c*dt*g*np.sin(alpha)-f_D*rho*c*dt/(2*D)*abs(v_old)*v_old
self.v[0] = self.v_boundary_res.copy()
self.v[-1] = self.v_boundary_tur.copy()
@@ -137,15 +136,15 @@ class Druckrohrleitung_class:
print(print_str)
def get_boundary_conditions_next_timestep(self,target_unit_pressure ='bar'):
def get_boundary_conditions_next_timestep(self):
print('The pressure at the reservoir for the next timestep is', '\n', \
pressure_conversion(self.p_boundary_res,self.pressure_unit_print,target_unit_pressure), '\n', \
pressure_conversion(self.p_boundary_res,self.pressure_unit,self.pressure_unit_print), '\n', \
'The velocity at the reservoir for the next timestep is', '\n', \
self.v_boundary_res, self.velocity_unit, '\n', \
self.v_boundary_res, self.velocity_unit_print, '\n', \
'The pressure at the turbine for the next timestep is', '\n', \
pressure_conversion(self.p_boundary_tur,self.pressure_unit_print,target_unit_pressure), '\n', \
pressure_conversion(self.p_boundary_tur,self.pressure_unit,self.pressure_unit_print), '\n', \
'The velocity at the turbine for the next timestep is', '\n', \
self.v_boundary_tur, self.velocity_unit)
self.v_boundary_tur, self.velocity_unit_print)
def timestep_characteristic_method(self):

29
Main_Programm.ipynb
View File

@@ -2,7 +2,7 @@
"cells": [
{
"cell_type": "code",
"execution_count": 26,
"execution_count": 1,
"metadata": {},
"outputs": [],
"source": [
@@ -16,7 +16,7 @@
},
{
"cell_type": "code",
"execution_count": 27,
"execution_count": 2,
"metadata": {},
"outputs": [],
"source": [
@@ -61,7 +61,7 @@
"initial_outflux = Q0 # initial outflux of volume from the reservoir to the pipeline [m³/s]\n",
"initial_pipeline_pressure = p0 # Initial condition for the static pipeline pressure at the reservoir (= hydrostatic pressure - dynamic pressure) \n",
"initial_pressure_unit = 'Pa' # DO NOT CHANGE! for pressure conversion in print statements and plot labels \n",
"conversion_pressure_unit = 'Torr' # for pressure conversion in print statements and plot labels\n",
"conversion_pressure_unit = 'mWS' # for pressure conversion in print statements and plot labels\n",
"area_base = 20. # total base are of the cuboid reservoir [m²] \n",
"area_outflux = A_pipe # outlfux area of the reservoir, given by pipeline area [m²]\n",
"critical_level_low = 0. # for yet-to-be-implemented warnings[m]\n",
@@ -92,7 +92,7 @@
},
{
"cell_type": "code",
"execution_count": 28,
"execution_count": 3,
"metadata": {},
"outputs": [
{
@@ -113,15 +113,6 @@
"Simulation timestep = 0.00025 s \n",
"----------------------------- \n",
"\n",
"The current attributes are: \n",
"----------------------------- \n",
"Current level = 20.0 m\n",
"Volume in reservoir = 400.0 m³ \n",
"Current influx = 0.0 m³/s \n",
"Current outflux = 2.0 m³/s \n",
"Current pipe pressure = 1447.306 Torr \n",
"----------------------------- \n",
"\n",
"The pipeline has the following attributes: \n",
"----------------------------- \n",
"Length = 1000.0 m \n",
@@ -154,17 +145,17 @@
"pipe = Druckrohrleitung_class(L,D,n,alpha,f_D)\n",
"pipe.set_pressure_propagation_velocity(c)\n",
"pipe.set_number_of_timesteps(nt)\n",
"pipe.set_initial_pressure(p_init)\n",
"pipe.set_initial_pressure(p_init,initial_pressure_unit,conversion_pressure_unit)\n",
"pipe.set_initial_flow_velocity(v_init)\n",
"\n",
"# display the attributes of the created reservoir and pipeline object\n",
"V.get_info(full=True)\n",
"pipe.get_info()"
"# V.get_info(full=True)\n",
"# pipe.get_info()"
]
},
{
"cell_type": "code",
"execution_count": 29,
"execution_count": 4,
"metadata": {},
"outputs": [],
"source": [
@@ -201,7 +192,7 @@
},
{
"cell_type": "code",
"execution_count": 30,
"execution_count": 5,
"metadata": {},
"outputs": [],
"source": [
@@ -284,7 +275,7 @@
},
{
"cell_type": "code",
"execution_count": 31,
"execution_count": 6,
"metadata": {},
"outputs": [],
"source": [