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* Redo README text and make new files for other documentation sections * Update readme to make it nicer * Create title simulation * Change title video to gif * Add title gif * Remove spacing in readme
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,97 @@ | ||
| using Subzero, JLD2, CairoMakie, GeoInterfaceMakie, Random, Statistics | ||
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| const FT = Float64 | ||
| const Lx = 8e4 | ||
| const Ly = 8e4 | ||
| const Δgrid = 2e3 | ||
| const hmean = 0.25 | ||
| const Δh = 0.0 | ||
| const Δt = 20 | ||
| const nΔt = 5000 | ||
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| # Model instantiation | ||
| grid = RegRectilinearGrid((0.0, Lx), (0.0, Ly), Δgrid, Δgrid) | ||
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| uvels = repeat( | ||
| [range(0, 0.2, length = 21); range(0.2, 0, length = 20)], | ||
| outer = (1, 41), | ||
| ) | ||
| ocean = Ocean( | ||
| uvels', | ||
| zeros(grid.Nx + 1, grid.Ny + 1), | ||
| zeros(grid.Nx + 1, grid.Ny + 1), | ||
| ) | ||
| atmos = Atmos(grid, 0.0, 0.0, -1.0) | ||
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| # Domain creation | ||
| nboundary = PeriodicBoundary(North, grid) | ||
| sboundary = PeriodicBoundary(South, grid) | ||
| eboundary = PeriodicBoundary(East, grid) | ||
| wboundary = PeriodicBoundary(West, grid) | ||
| domain = Domain(nboundary, sboundary, eboundary, wboundary) | ||
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| # Floe creation | ||
| floe_arr = initialize_floe_field(FT, 400, [0.85], domain, hmean, Δh; rng = Xoshiro(1)) | ||
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| # Model creation | ||
| model = Model(grid, ocean, atmos, domain, floe_arr) | ||
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| # Simulation setup | ||
| modulus = 1.5e3*(mean(sqrt.(floe_arr.area)) + minimum(sqrt.(floe_arr.area))) | ||
| consts = Constants(E = modulus) | ||
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| # Run simulation | ||
| dir = "output/title/" | ||
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| # Output setup | ||
| floewriter = FloeOutputWriter(50, dir = dir, overwrite = true) | ||
| writers = OutputWriters(floewriter) | ||
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| simulation = Simulation(; model, consts, Δt, nΔt, writers, verbose = true, rng = Xoshiro(1)) | ||
| run!(simulation) | ||
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| function plot_logo(floe_fn, Lx, Ly, dir) | ||
| # Floe Information | ||
| file = jldopen(floe_fn) | ||
| sim_polys = file["poly"] | ||
| timesteps = keys(sim_polys) | ||
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| # Set up observables for recording (updated whenever `time[]` is set to a new value) | ||
| time = Observable(timesteps[1]) # note these are strings as we index into a JLD2 file | ||
| time_polys = @lift(sim_polys[$time]) | ||
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| # Set up figure | ||
| fig = Figure(; size = (1200, 300)) | ||
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| floe_rgb = (165, 222, 242) | ||
| floe_color = RGBf((floe_rgb ./ 255)...) | ||
| ocean_rgb = (4, 31, 74) | ||
| ocean_color = RGBf((ocean_rgb ./ 255)...) | ||
| text_outline_rgb = (219, 76, 0) | ||
| text_outline_color = RGBf((text_outline_rgb ./ 255)...) | ||
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| ax = Axis(fig[1, 1]; limits = (0.0, Lx, 0.0, Ly), backgroundcolor = ocean_color) | ||
| hidedecorations!(ax) | ||
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| # Plot starting state (floes + topography) | ||
| poly!(time_polys, color = floe_color, strokecolor = :black, strokewidth = 0.5) # floes | ||
| text!( | ||
| Lx/2, Ly/2; | ||
| align = (:center, :center), | ||
| text = "Subzero.jl", | ||
| font = :bold, | ||
| fontsize = 175, | ||
| strokecolor = text_outline_color, | ||
| strokewidth = 5, | ||
| ) | ||
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| # Create movie | ||
| record(fig, dir*"title.gif", timesteps; framerate = 20) do t | ||
| time[] = t # updating the time auto updates the related time_polys | ||
| end | ||
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| # End movie and close file | ||
| close(file) | ||
| end | ||
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| plot_logo(dir*"floes.jld2", Lx, Ly, dir) |
Empty file.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,5 @@ | ||
| # Introduction | ||
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| Sea-ice model to explicitly simulate individual floe life cycles using complex discrete elements with time-evolving shapes. Easy to couple with Oceananigans for explorations of coupled ice-ocean dynamics. Ported from MATLAB to Julia. | ||
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| ## Main concepts |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,78 @@ | ||
| # Let’s run a basic simulation with initially stationary floes pushed into a collision boundary by a uniform, zonally flowing ocean. In this simulation, collisions between floes are on by default and we will enable floe fracturing. | ||
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| # Create environment | ||
| grid = RegRectilinearGrid( | ||
| (0, 1e5), # xbounds | ||
| (0, 1e5), # ybounds | ||
| 1e4, # grid cell width | ||
| 1e4, # grid cell height | ||
| ) | ||
| ocean = Ocean(grid, 0.25, 0.0, 0.0) # 0.25m/s u-velocity, 0m/s v-velocity, 0C temperature in all grid cells | ||
| atmos = Atmos(grid, 0.0, 0.1, -1.0) # 0m/s u-velocity, 0.1m/s v-velocity, -1C temperature in all grid cells | ||
| # Create domain | ||
| domain = Domain( | ||
| CollisionBoundary(North, grid), | ||
| CollisionBoundary(South, grid), | ||
| CollisionBoundary(East, grid), | ||
| CollisionBoundary(West, grid), | ||
| ) | ||
| # Create floes | ||
| floe_settings = FloeSettings(stress_calculator = DecayAreaScaledCalculator(), min_floe_area = 1e5) | ||
| floe_arr = initialize_floe_field( | ||
| Float64, | ||
| 100, # number of floes | ||
| [0.7], # floe concentration | ||
| domain, | ||
| 0.5, # average floe height | ||
| 0.05; # floe height variability | ||
| floe_settings = floe_settings, | ||
| ) | ||
| # Create model | ||
| model = Model(grid, ocean, atmos, domain, floe_arr) | ||
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| # Create settings | ||
| modulus = 1.5e3*(mean(sqrt.(floe_arr.area)) + minimum(sqrt.(floe_arr.area))) | ||
| consts = Constants(E = modulus) | ||
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| fracture_settings = FractureSettings( | ||
| fractures_on = true, | ||
| criteria = HiblerYieldCurve(floe_arr), | ||
| Δt = 75, | ||
| npieces = 3, | ||
| deform_on = true, | ||
| ) | ||
| # Create output writers | ||
| dir = "output/sim" | ||
| initwriter = InitialStateOutputWriter( | ||
| dir = dir, | ||
| filename = "initial_state.jld2", | ||
| overwrite = true, | ||
| ) | ||
| floewriter = FloeOutputWriter( | ||
| 100, | ||
| dir = dir, | ||
| filename = "floes.jld2", | ||
| overwrite = true, | ||
| ) | ||
| writers = OutputWriters(initwriter, floewriter) | ||
| # Create simulation | ||
| Δt = 10 | ||
| simulation = Simulation( | ||
| model = model, | ||
| consts = consts, | ||
| Δt = Δt, # 10 second timesteps | ||
| nΔt = 10000, # Run for 10000 timesteps | ||
| verbose = true; | ||
| fracture_settings = fracture_settings, | ||
| writers = writers, | ||
| ) | ||
| # Run simulation | ||
| run!(simulation) | ||
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| # Plot simulation | ||
| plot_sim( | ||
| "output/sim/floes.jld2", | ||
| "output/sim/initial_state.jld2", | ||
| Δt, | ||
| "output/sim/example.mp4", | ||
| ) |
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