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Refactor of concentration code #1929

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3 changes: 2 additions & 1 deletion core/src/Ribasim.jl
Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,7 @@ using MetaGraphsNext:
using EnumX: EnumX, @enumx

# Easily change an immutable field of an object.
using Accessors: @set
using Accessors: @set, @reset

# Iteration utilities, used to partition and group tables.
import IterTools
Expand Down Expand Up @@ -167,6 +167,7 @@ include("read.jl")
include("write.jl")
include("bmi.jl")
include("callback.jl")
include("concentration.jl")
include("main.jl")
include("libribasim.jl")

Expand Down
201 changes: 66 additions & 135 deletions core/src/callback.jl
Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,10 @@
FunctionCallingCallback(update_cumulative_flows!; func_start = false)
push!(callbacks, cumulative_flows_cb)

# Update concentrations
concentrations_cb = FunctionCallingCallback(update_concentrations!; func_start = false)
push!(callbacks, concentrations_cb)

# Update Basin forcings
tstops = get_tstops(basin.time.time, starttime)
basin_cb = PresetTimeCallback(tstops, update_basin!; save_positions = (false, false))
Expand Down Expand Up @@ -113,30 +117,16 @@
the Basin concentration(s) and then remove the mass that is being lost to the outflows.
"""
function update_cumulative_flows!(u, t, integrator)::Nothing
(; p, uprev, tprev, dt) = integrator
(;
basin,
state_inflow_edge,
state_outflow_edge,
user_demand,
level_boundary,
flow_boundary,
allocation,
) = p
(; p, tprev, dt) = integrator
(; basin, flow_boundary, allocation) = p
(; vertical_flux) = basin

# Update tprev
p.tprev[] = t

# Reset cumulative flows, used to calculate the concentration
# of the basins after processing inflows only
basin.cumulative_in .= 0.0

# Update cumulative forcings which are integrated exactly
@. basin.cumulative_drainage += vertical_flux.drainage * dt
@. basin.cumulative_drainage_saveat += vertical_flux.drainage * dt
basin.mass .+= basin.concentration[1, :, :] .* vertical_flux.drainage * dt
basin.cumulative_in .= vertical_flux.drainage * dt

# Precipitation depends on fixed area
for node_id in basin.node_id
Expand All @@ -145,9 +135,6 @@

basin.cumulative_precipitation[node_id.idx] += added_precipitation
basin.cumulative_precipitation_saveat[node_id.idx] += added_precipitation
basin.mass[node_id.idx, :] .+=
basin.concentration[2, node_id.idx, :] .* added_precipitation
basin.cumulative_in[node_id.idx] += added_precipitation
end

# Exact boundary flow over time step
Expand All @@ -162,9 +149,6 @@
volume = integral(flow_rate, tprev, t)
flow_boundary.cumulative_flow[id.idx] += volume
flow_boundary.cumulative_flow_saveat[id.idx] += volume
basin.mass[outflow_id.idx, :] .+=
flow_boundary.concentration[id.idx, :] .* volume
basin.cumulative_in[outflow_id.idx] += volume
end
end

Expand All @@ -189,138 +173,83 @@
end
end
end
return nothing
end

# Process mass updates for UserDemand separately
# as the inflow and outflow are decoupled in the states
for (inflow_edge, outflow_edge) in
zip(user_demand.inflow_edge, user_demand.outflow_edge)
from_node = inflow_edge.edge[1]
to_node = outflow_edge.edge[2]
userdemand_idx = outflow_edge.edge[1].idx
if from_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, inflow_edge.edge)
if flow < 0
basin.mass[from_node.idx, :] .-=
basin.concentration_state[to_node.idx, :] .* flow
basin.mass[from_node.idx, :] .-=
user_demand.concentration[userdemand_idx, :] .* flow
end
end
if to_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, outflow_edge.edge)
if flow > 0
basin.mass[to_node.idx, :] .+=
basin.concentration_state[from_node.idx, :] .* flow
basin.mass[to_node.idx, :] .+=
user_demand.concentration[userdemand_idx, :] .* flow
end
end
end
function update_concentrations!(u, t, integrator)::Nothing
(; uprev, p, tprev, dt) = integrator
(; basin, flow_boundary) = p
(; vertical_flux, concentration_data) = basin
(; evaporate_mass, cumulative_in, concentration_state, concentration, mass) =
concentration_data

# Process all mass inflows to basins
for (inflow_edge, outflow_edge) in zip(state_inflow_edge, state_outflow_edge)
from_node = inflow_edge.edge[1]
to_node = outflow_edge.edge[2]
if from_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, inflow_edge.edge)
if flow < 0
basin.cumulative_in[from_node.idx] -= flow
if to_node.type == NodeType.Basin
basin.mass[from_node.idx, :] .-=
basin.concentration_state[to_node.idx, :] .* flow
elseif to_node.type == NodeType.LevelBoundary
basin.mass[from_node.idx, :] .-=
level_boundary.concentration[to_node.idx, :] .* flow
elseif to_node.type == NodeType.UserDemand
basin.mass[from_node.idx, :] .-=
user_demand.concentration[to_node.idx, :] .* flow
elseif to_node.type == NodeType.Terminal && to_node.value == 0
# UserDemand inflow is discoupled from its outflow,
# and the unset flow edge defaults to Terminal #0
nothing
else
@warn "Unsupported outflow from $(to_node.type) #$(to_node.value) to $(from_node.type) #$(from_node.value) with flow $flow"
end
end
end
# Reset cumulative flows, used to calculate the concentration
# of the basins after processing inflows only
cumulative_in .= 0.0

if to_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, outflow_edge.edge)
if flow > 0
basin.cumulative_in[to_node.idx] += flow
if from_node.type == NodeType.Basin
basin.mass[to_node.idx, :] .+=
basin.concentration_state[from_node.idx, :] .* flow
elseif from_node.type == NodeType.LevelBoundary
basin.mass[to_node.idx, :] .+=
level_boundary.concentration[from_node.idx, :] .* flow
elseif from_node.type == NodeType.UserDemand
basin.mass[to_node.idx, :] .+=
user_demand.concentration[from_node.idx, :] .* flow
elseif from_node.type == NodeType.Terminal && from_node.value == 0
# UserDemand outflow is discoupled from its inflow,
# and the unset flow edge defaults to Terminal #0
nothing
else
@warn "Unsupported outflow from $(from_node.type) #$(from_node.value) to $(to_node.type) #$(to_node.value) with flow $flow"
end
end
end
mass .+= concentration[1, :, :] .* vertical_flux.drainage * dt
basin.concentration_data.cumulative_in .= vertical_flux.drainage * dt

# Precipitation depends on fixed area
for node_id in basin.node_id
fixed_area = basin_areas(basin, node_id.idx)[end]
added_precipitation = fixed_area * vertical_flux.precipitation[node_id.idx] * dt

mass[node_id.idx, :] .+= concentration[2, node_id.idx, :] .* added_precipitation
cumulative_in[node_id.idx] += added_precipitation
end

# Update the Basin concentrations based on the added mass and flows
basin.concentration_state .= basin.mass ./ (basin.storage_prev .+ basin.cumulative_in)

# Process all mass outflows from Basins
for (inflow_edge, outflow_edge) in zip(state_inflow_edge, state_outflow_edge)
from_node = inflow_edge.edge[1]
to_node = outflow_edge.edge[2]
if from_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, inflow_edge.edge)
if flow > 0
basin.mass[from_node.idx, :] .-=
basin.concentration_state[from_node.idx, :] .* flow
end
end
if to_node.type == NodeType.Basin
flow = flow_update_on_edge(integrator, outflow_edge.edge)
if flow < 0
basin.mass[to_node.idx, :] .+=
basin.concentration_state[to_node.idx, :] .* flow
end
# Exact boundary flow over time step
for (id, flow_rate, active, edge) in zip(
flow_boundary.node_id,
flow_boundary.flow_rate,
flow_boundary.active,
flow_boundary.outflow_edges,
)
if active
outflow_id = edge[1].edge[2]
volume = integral(flow_rate, tprev, t)
mass[outflow_id.idx, :] .+= flow_boundary.concentration[id.idx, :] .* volume
cumulative_in[outflow_id.idx] += volume
end
end

mass_updates_user_demand!(integrator)
mass_inflows_basin!(integrator)

# Update the Basin concentrations based on the added mass and flows
concentration_state .= mass ./ (basin.storage_prev .+ cumulative_in)

mass_outflows_basin!(integrator)

# Evaporate mass to keep the mass balance, if enabled in model config
if basin.evaporate_mass
basin.mass .-= basin.concentration_state .* (u.evaporation - uprev.evaporation)
if evaporate_mass
mass .-= concentration_state .* (u.evaporation - uprev.evaporation)
end
basin.mass .-= basin.concentration_state .* (u.infiltration - uprev.infiltration)
mass .-= concentration_state .* (u.infiltration - uprev.infiltration)

# Take care of infinitely small masses, possibly becoming negative due to truncation.
for I in eachindex(basin.mass)
if (-eps(Float64)) < basin.mass[I] < (eps(Float64))
basin.mass[I] = 0.0
for I in eachindex(basin.concentration_data.mass)
if (-eps(Float64)) < mass[I] < (eps(Float64))
mass[I] = 0.0
end
end

# Check for negative masses
if any(<(0), basin.mass)
R = CartesianIndices(basin.mass)
locations = findall(<(0), basin.mass)
if any(<(0), mass)
R = CartesianIndices(mass)
locations = findall(<(0), mass)

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for I in locations
basin_idx, substance_idx = Tuple(R[I])
@error "$(basin.node_id[basin_idx]) has negative mass $(basin.mass[I]) for substance $(basin.substances[substance_idx])"
@error "$(basin.node_id[basin_idx]) has negative mass $(basin.concentration_data.mass[I]) for substance $(basin.concentration_data.substances[substance_idx])"

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end
error("Negative mass(es) detected")
end

# Update the Basin concentrations again based on the removed mass
basin.concentration_state .=
basin.mass ./ basin.current_properties.current_storage[parent(u)]
concentration_state .= mass ./ basin.current_properties.current_storage[parent(u)]
basin.storage_prev .= basin.current_properties.current_storage[parent(u)]
basin.level_prev .= basin.current_properties.current_level[parent(u)]

return nothing
end

Expand Down Expand Up @@ -427,7 +356,7 @@
@. basin.cumulative_precipitation_saveat = 0.0
@. basin.cumulative_drainage_saveat = 0.0

concentration = copy(basin.concentration_state)
concentration = copy(basin.concentration_data.concentration_state)
saved_flow = SavedFlow(;
flow = flow_mean,
inflow = inflow_mean,
Expand Down Expand Up @@ -682,11 +611,12 @@
end

elseif startswith(variable, "concentration_external.")
value = basin.concentration_external[listen_node_id.idx][variable](t)
value =
basin.concentration_data.concentration_external[listen_node_id.idx][variable](t)
elseif startswith(variable, "concentration.")
substance = Symbol(last(split(variable, ".")))
var_idx = findfirst(==(substance), basin.substances)
value = basin.concentration_state[listen_node_id.idx, var_idx]
var_idx = findfirst(==(substance), basin.concentration_data.substances)
value = basin.concentration_data.concentration_state[listen_node_id.idx, var_idx]

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else
error("Unsupported condition variable $variable.")
end
Expand Down Expand Up @@ -781,7 +711,8 @@
function update_basin_conc!(integrator)::Nothing
(; p) = integrator
(; basin) = p
(; node_id, concentration, concentration_time, substances) = basin
(; node_id, concentration_data, concentration_time) = basin
(; concentration, substances) = concentration_data
t = datetime_since(integrator.t, integrator.p.starttime)

rows = searchsorted(concentration_time.time, t)
Expand All @@ -802,7 +733,7 @@
node = getproperty(p, parameter)
(; basin) = p
(; node_id, concentration, concentration_time) = node
(; substances) = basin
(; substances) = basin.concentration_data
t = datetime_since(integrator.t, integrator.p.starttime)

rows = searchsorted(concentration_time.time, t)
Expand Down
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