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对于这个问题,我在ParameterizedFunctions.jlDSL 中实现了相同的模型。以下 MWE 有效:

using DifferentialEquations
using Plots

# Modeling a consecutive / parallel reaction in a CSTR
# A --> 2B --> C, C --> 2B, B --> D
# PETERSEN-Matrix
#   No.     A       B       C       D       Rate
#   1      -1       2                       k1*A
#   2              -2       1               k2*B*B
#   3               2      -1               k3*C
#   4              -1               1       k4*B

fpr! = @ode_def ConsecutiveParallelReaction begin
    dA = -k_1*A + q_in/V_liq*(A_in - A)
    dB = 2*k_1*A - 2*k_2*B*B + 2*k_3*C - k_4*B + q_in/V_liq*(B_in - B)
    dC = k_2*B*B - k_3*C + q_in/V_liq*(C_in - C)
    dD = k_4*B + q_in/V_liq*(D_in - D)
end k_1 k_2 k_3 k_4 q_in V_liq A_in B_in C_in D_in

u0 = [1.5, 0.1, 0, 0]
params = [1.0, 1.5, 0.75, 0.15, 3, 15, 0.5, 0, 0, 0]
tspan = (0.0, 15.0)
prob = ODEProblem(fpr!, u0, tspan, params)
sol = solve(prob)
plot(sol)

但是,使用sol = solve(prob, Rosenbrock23())(甚至使用autodiff=false),会发生以下错误:

ERROR: LoadError: MethodError: Cannot `convert` an object of type Array{Float64,1} to an object of type Float64

我想这是与上述类似的问题,但由于我没有Float64在这里明确定义任何向量并且autodiff=false没有消除错误,我不知道如何解决这个问题。有什么建议么?

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1 回答 1

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从评论看来,这确实有效。

于 2019-02-01T08:45:58.877 回答