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The recent merge of https://github.com/IDAES/idaes-pse/pull/627 has revealed additional issues with the HDS flowsheet example (Examples/Flowsheets/HDA_flowsheet_with_distillation_solution_testing.ipyn…
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If I understand correctly, you're solving your rate equations at steady state, which means your differential equations become a system of (nonlinear) algebraic equations. You need an initial guess to…
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@frapac from our discussion:
Modeling languages are great, but for many nonlinear problems you just want to provide an objective and constraints to the solvers with minimal hassles. In economics…
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hi, the codes is as follows.
let eq1 ="x^2+y^2=1",
eq2 ="x+y=1";
nerdamer.solveEquations([eq1, eq2]);
And you will find it comes out as "Division by zero not allowed!"
is this kind equation…
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I noticed in the tutorial when optimal instruments were implemented, the procedure was:
1. Initial estimate with 1s GMM
2. Compute optimal instruments
3. Updated results with 1s GMM
I am curi…
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I have a case where I am using `ExternalFunctions` as part of my model. The `ExternalFunction` takes three arguments:
* a (constant) integer argument indicating an internal option for the function …
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Hi!
I have the following model (not sure if it is an error but I have gotten similar models to work using DifferentialEquations.jl (bare bones) ):
```
using ModelingToolkit
using DiffEqBase
…
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I think that the MIT course [Introduction to Computational Thinking](https://computationalthinking.mit.edu/Spring21/#introduction_to_computational_thinking) is a worthy addition to the core math curri…
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I think we should be applying `dealias!(sol, prob.grid)` before any calculations of quadratic nonlinearities. We were getting away with this up to now either because of viscosity/hyperviscosity dampin…
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name: Newton-type method for solveing non-linear (NL) equations (EQ)
definition: Damped Newton-algorithm with rank strategy for systems of highly nonlinear equations.
subClassOf: KISAO_0000408
…