84 lines
2.3 KiB
Python
84 lines
2.3 KiB
Python
import tsnet
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# open an example network and create a transient model
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inp_file = '/Users/luxing/Code/TSNet/examples/networks/Tnet2.inp'
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tm = tsnet.network.TransientModel(inp_file)
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# Set wavespeed
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tm.set_wavespeed(1200.)
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# Set time step
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tf = 20 # simulation period [s]
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tm.set_time(tf)
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# Set pump shut off
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tc = 1 # pump closure period
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ts = 0 # pump closure start time
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se = 0 # end open percentage
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m = 1 # closure constant
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pump_op = [tc,ts,se,m]
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tm.pump_shut_off('PUMP2', pump_op)
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# Initialize steady state simulation
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t0 = 0. # initialize the simulation at 0s
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engine = 'DD' # or PPD
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tm = tsnet.simulation.Initializer(tm, t0, engine)
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# Transient simulation
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results_obj = 'Tnet2' # name of the object for saving simulation results.head
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tm1 = tsnet.simulation.MOCSimulator(tm,results_obj)
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#%%
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tm = tsnet.network.TransientModel(inp_file)
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# Set wavespeed
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tm.set_wavespeed(1200.)
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# Set time step
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tf = 20 # simulation period [s]
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tm.set_time(tf)
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# Set pump shut off
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tc = 1 # pump closure period
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ts = 0 # pump closure start time
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se = 0 # end open percentage
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m = 1 # closure constant
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pump_op = [tc,ts,se,m]
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tm.pump_shut_off('PUMP2', pump_op)
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# Initialize steady state simulation
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t0 = 0. # initialize the simulation at 0s
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engine = 'DD' # or PPD
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tm = tsnet.simulation.Initializer(tm, t0, engine)
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tank_node = 'JUNCTION-105'
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tank_height = 10 # tank height [m]
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water_height = 5 # initial water level [m]
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tank_area = 10 # tank cross sectional area [m^2]
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tm.add_surge_tank(tank_node, [tank_area,tank_height,water_height], 'closed')
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# Transient simulation
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results_obj = 'Tnet2' # name of the object for saving simulation results.head
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tm2 = tsnet.simulation.MOCSimulator(tm,results_obj)
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#%%
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# report results
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import matplotlib.pyplot as plt
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node = '169'
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head1 = tm1.get_node(node).head
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t1 = tm1.simulation_timestamps
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head2 = tm2.get_node(node).head
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t2 = tm2.simulation_timestamps
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fig = plt.figure(figsize=(8,5), dpi=80, facecolor='w', edgecolor='k')
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plt.plot(t1, head1, 'k',label='wo surge tank', linewidth=2.5)
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plt.plot(t2, head2, 'r', label='w surge tank', linewidth=2.5)
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plt.xlim([t1[0],t1[-1]])
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plt.xlabel("Time [s]")
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plt.ylabel("Pressure Head [m]")
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plt.legend(loc='best')
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plt.show()
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fig.savefig('tnet2_surge_tank.pdf', format='pdf',dpi=500)
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# fig.savefig('./docs/figures/tnet2_node.png', format='png',dpi=100)
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