Simulation Engineer for a Coupled Multiphysics Study in COMSOL

We study how professionals actually work - how experts drive creative and technical software - as research toward better computer interfaces. This is a paid demo project: you complete one realistic task while we record the screen and your spoken commentary. This is the first round. If it goes well, there is a real chance it turns into ongoing work. Assignment Build a genuinely coupled two-physics model - Joule heating in a conductor, thermal expansion of a heated part, or piezoelectric actuation - solve it, and show what the coupling changes compared with solving each physics on its own. Time: 4–5 hours, in one non-stop sitting Timing: we need the session completed this week You choose your own physics Pick the coupled physics pair and the problem yourself, and explain why the coupling matters. How the session works You work inside a cloud computer we provide, with the hardware and software already set up. Your screen, mouse, keyboard and microphone are recorded for the whole session, and you talk through what you are doing as you do it. We are recording how you work, not grading how closely you follow instructions. Use your own workflow and research the way you normally would. Dead ends, restarts and changed minds are genuinely useful to us - please do not tidy up your process. Spoken English matters for this one The commentary is half of what we are paying for, so you need to be comfortable thinking out loud in English for a few hours straight. Fluency matters far less than being able to keep talking while you work. So please include a short voice recording with your proposal - under 60 seconds, but long enough for us to hear how you explain something in English - answering this question: "When does a two-way coupling actually matter, versus solving each physics on its own?" Just your honest answer in your own words. We are listening for two things: how you explain your workflow, and whether we can follow your spoken English. It does not need to be a perfect or complete answer. Proposals without a voice note will not be reviewed. Deliverables - The COMSOL model file (.mph). - Result plots for each physics field. - A comparison of coupled versus uncoupled results with the difference quantified. - A short report on the physics setup, the coupling, and what the coupling actually changed. - A Working_Notes folder with your references, sketches, scratch files and notes Ideal freelancer Simulation engineer with COMSOL experience across at least two coupled physics domains.