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fix rotational diffusion pdf #97

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merged 3 commits into from
Jan 5, 2025
Merged

fix rotational diffusion pdf #97

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f362752
fix rotational diffusion pdf
mastrof Jan 5, 2025
8ce5a26
bump patch version
mastrof Jan 5, 2025
dddad9e
fix typo
mastrof Jan 5, 2025
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2 changes: 1 addition & 1 deletion Project.toml
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
name = "MicrobeAgents"
uuid = "b17a4bac-8667-4a2d-84f7-1883ae0b8dbb"
authors = ["Riccardo Foffi <rfoffi@ethz.ch> and contributors"]
version = "0.5.1"
version = "0.5.2"

[deps]
Agents = "46ada45e-f475-11e8-01d0-f70cc89e6671"
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13 changes: 10 additions & 3 deletions src/rotations.jl
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Expand Up @@ -14,13 +14,20 @@ Reorient `microbe` due to brownian rotational diffusion.
In 1-dimensional models, this functions does nothing.
"""
rotational_diffusion!(microbe::AbstractMicrobe{1}, model) = nothing
function rotational_diffusion!(microbe::AbstractMicrobe, model)
function rotational_diffusion!(microbe::AbstractMicrobe{2}, model)
dt = model.timestep
D_rot = rotational_diffusivity(microbe)
σ = sqrt(2*D_rot*dt)
θ = rand(abmrng(model), Normal(0, σ))
microbe.vel = rotate(direction(microbe), θ)
end
function rotational_diffusion!(microbe::AbstractMicrobe{3}, model)
dt = model.timestep
D_rot = rotational_diffusivity(microbe)
σ = sqrt(2*D_rot*dt)
θ = rand(abmrng(model), Normal(0,σ))
ϕ = rand(abmrng(model), Arccos())
microbe.vel = rotate(direction(microbe), θ, ϕ)
φ = rand(abmrng(model), Uniform(-π, +π))
microbe.vel = rotate(direction(microbe), θ, φ)
nothing
end

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