# Julia - what interesting things are you doing?

**URL:** <https://discourse.julialang.org/t/julia-what-interesting-things-are-you-doing/47297>\
**Category:** Community\
**Created:** [September 26, 2020, 3:03am UTC](https://discourse.julialang.org/t/julia-what-interesting-things-are-you-doing/47297 "2020-09-26T03:03:41Z")\
**Posts on this page:** 1\
**Showing post:** 92

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**Author:** ![liuyxpp](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/liuyxpp/32/9870_2.png) [@liuyxpp](https://discourse.julialang.org/u/liuyxpp)\
**Post date:** [June 14, 2021, 7:03am UTC](https://discourse.julialang.org/t/julia-what-interesting-things-are-you-doing/47297/92 "2021-06-14T07:03:38Z")

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Lately, I am working on a problem collaborating with experimentalists to understand the drying process of conductive thin films. The system includes three-component (donor A, acceptor B, and solvent S), where A and B may undergo phase separation along with the evaporation of S. It involves a solution of a moving boundary PDE. The simpler version of the two-component case is describing [here](https://discourse.julialang.org/t/how-to-apply-diffeq-for-pdes-with-a-moving-boundary/61491). For 3-component phase separation case, the PDE system is even more complicated which involves 1st through 4th order derivatives and two coupled PDEs.

To construct the model, I spend two months starting from the simplest 2-component case. However, with the help of DifferentialEquations.jl, I only spend one day making all numerical algorithms work! I even find some errors in my model during experimentation of numerical calculations. It is so AMAZING! If I were using C++ just like before, I expect I will spend another two months to make one such algorithm to work properly.

This is one of the numerous examples I have encountered these two years when I began to do research using Julia. I have rewritten one of my main research software from C++ to Julia, and the development process is so enjoyable. Julia enables me to add many functionalities that I would not dare to think of by using C++ or Python. I’d say Julia extends my ability to think about more complicated physical problems and solve them!

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