Georg_Brantegger/Python-DT_Slot_3
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code cleanup:

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consistenly use getter and setter methods
commenting etc
This commit is contained in:
Brantegger Georg
2022-07-27 11:40:58 +02:00
parent ac8bfdb7c6
commit d1c15090dc
13 changed files with 956 additions and 584 deletions
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21
Druckrohrleitung/Druckrohrleitung_class_file.py
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@@ -33,6 +33,8 @@ class Druckrohrleitung_class:
self.density = rho # density of the liquid in the pipeline
self.g = g # gravitational acceleration
self.A = (diameter/2)**2*np.pi
self.dx = total_length/number_segments # length of each segment
self.l_vec = np.arange(0,(number_segments+1),1)*self.dx # vector giving the distance from each node to the start of the pipeline
@@ -98,23 +100,22 @@ class Druckrohrleitung_class:
p_old_res = self.p_old[1] # @ second node (the one after the reservoir)
v_old_res = self.v_old[1] # @ second node (the one after the reservoir)
# set the boundary conditions derived from reservoir and turbine
self.v_boundary_tur = v_turbine # at new timestep
self.p_boundary_res = p_reservoir # at new timestep
v_boundary_tur = v_turbine # at new timestep
p_boundary_res = p_reservoir # at new timestep
# calculate the missing boundary conditions
self.v_boundary_res = v_old_res+1/(rho*c)*(p_reservoir-p_old_res)+dt*g*np.sin(alpha)-f_D*dt/(2*D)*abs(v_old_res)*v_old_res
self.p_boundary_tur = p_old_tur-rho*c*(v_turbine-v_old_tur)+rho*c*dt*g*np.sin(alpha)-f_D*rho*c*dt/(2*D)*abs(v_old_tur)*v_old_tur
v_boundary_res = v_old_res+1/(rho*c)*(p_boundary_res-p_old_res)+dt*g*np.sin(alpha)-f_D*dt/(2*D)*abs(v_old_res)*v_old_res
p_boundary_tur = p_old_tur-rho*c*(v_boundary_tur-v_old_tur)+rho*c*dt*g*np.sin(alpha)-f_D*rho*c*dt/(2*D)*abs(v_old_tur)*v_old_tur
# write boundary conditions to the velocity/pressure vectors of the next timestep
self.v[0] = self.v_boundary_res.copy()
self.v[-1] = self.v_boundary_tur.copy()
self.p[0] = self.p_boundary_res.copy()
self.p[-1] = self.p_boundary_tur.copy()
self.v[0] = v_boundary_res
self.v[-1] = v_boundary_tur
self.p[0] = p_boundary_res
self.p[-1] = p_boundary_tur
def set_steady_state(self,ss_flux,ss_level_reservoir,pl_vec,h_vec):
# set the pressure and velocity distributions, that allow a constant flow of water from the (steady-state) reservoir to the (steady-state) turbine
# the flow velocity is given by the constant flow through the pipe
ss_v0 = np.full(self.n_seg+1,ss_flux/(self.dia**2/4*np.pi))
ss_v0 = np.full(self.n_seg+1,ss_flux/self.A)
# the static pressure is given by the hydrostatic pressure, corrected for friction losses and dynamic pressure
ss_pressure = (self.density*self.g*(ss_level_reservoir+h_vec)-ss_v0**2*self.density/2)-(self.f_D*pl_vec/self.dia*self.density/2*ss_v0**2)