OpenFOAM Multiphase Coupling Assistance

min €36 EUR/ tunnissa

Käynnissä

Julkaistu 16 päivää sitten

min €36 EUR/ tunnissa

I am modeling multicomponent evaporation in OpenFOAM 10 using compressibleInterFoam within a VOF framework. The liquid phase is an incompressible multicomponent mixture, and the gas phase is a compressible mixture of inert and non-inert species. Each component evaporates independently following the Hertz–Knudsen equation, where the mass flux is driven by the difference between Raoult’s-law-based equilibrium pressure and a user-defined saturation pressure. Evaporation induces latent heat removal at the interface, which is included in the energy equation and results in interfacial cooling. The study is conducted in a simple 2D closed domain (walls on all four sides), initially half-filled with liquid (test case: 0.7 H₂O and 0.3 O₂). The initial vapor pressure is below saturation, and evaporation continues until thermodynamic equilibrium is reached and the system pressure approaches saturation. I have a model but I have some coupling issues between volume fraction equation and species equation.

Computational Fluid Dynamics

Thermodynamics

Chemical Engineering

Thermal Analysis

Projektin tunnus (ID): 40242533

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Myönnetty käyttäjälle:

@mogsten

€0 EUR 40 päivässä

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4 freelancerit tarjoavat keskimäärin €36 EUR/tunti tätä projektia

@LiveExperts

Hello, As a Chemical Engineer with a strong background in Computational Fluid Dynamics, Thermal Analysis and Thermodynamics, I am confident that I can provide the expert assistance you need for your OpenFOAM Multiphase Coupling project. My breadth of knowledge and experience in these fields equip me with the necessary skills to confront complex challenges like the one you're facing. I have successfully managed similar projects involving evaporation, multiple species, heat and mass transfer and have used OpenFOAM extensively for such simulations, which means I am incredibly familiar with the tools you're currently working on. This level of expertise enables me to quickly identify and resolve any coupling issues you are experiencing between volume fraction equation and species equation, streamlining your research. At Live Experts, we emphasize delivering quality work, transforming ideas into reality and ensuring customer satisfaction - values that align perfectly with your objectives. With a diverse set of programming skills including Linux, Bash, and MATLAB among many others, I can not only address your current issues but also help improve your model's functionality through effective integration. In choosing my expertise for this project, not only will you benefit from my deep understanding of the subject matter but you'll tap into my vast network of other experienced engineers as well. I look forward to helping you achieve optimal Thanks!

€36 EUR 998 päivässä

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(3 arvostelut)

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@AwaisChaudhry

Dear Client, I understand you are modeling multicomponent evaporation in OpenFOAM 10 using compressibleInterFoam within a VOF framework, with an incompressible liquid mixture and a compressible gas. The key goal is to couple the volume fraction and species equations so that interfacial cooling from latent heat is captured and the system progresses toward equilibrium under Raoult’s-law driven evaporation and user-defined saturation pressure. I will provide a clean, robust coupling strategy that preserves mass and energy balances, implements per-species Hertz-Knudsen fluxes, and ensures stable energy coupling at the interface. I’ll verify boundary and initial conditions, test in 2D, and deliver a ready-to-run setup with diagnostics to track pressure, interfacial temperature, species mass fractions, and fluxes until equilibrium. What is your preferred approach to synchronize the volume fraction equation with species transport for stability, and do you want a modular setup to swap thermodynamic models quickly? Which solver controls should be exposed to the user (e.g., Raoult’s law parameters, saturation pressure, Hertz–Knudsen coefficients)? Do you have any existing curves for saturation pressure or activity coefficients for H2O/O2, and how many components should be supported beyond the test case? Are there any specific convergence criteria or time-stepping limits you want for the coupled system? Should I include a rubric for validating energy balance across the interface?

€36 EUR 35 päivässä