Graduate programming project · MATLAB
Mixing Chamber CFD Solver
A numerical study of flow and species transport in a three-inlet chamber.
Problem
The chamber receives time-varying inflows with different velocities and chemical-species fractions. The simulation solves for the two-dimensional velocity field and transported mass fraction, then evaluates average tangential force at a sensor and total species leaving the chamber over the first ten nondimensional time units.
Method
I implemented a finite-difference workflow for the continuity, momentum, and species-transport equations, with inlet, outlet, and no-slip wall conditions specified in the project report. The report examines Reynolds and Schmidt number effects and uses three square grids, 64², 128², and 256², for a grid-convergence check.
Results
The reported mean tangential-force metric changed from 0.0076023 on the 64² grid to 0.0075668 on the 256² grid. The cumulative species-outflow metric changed from 2.5383 to 2.6081 across the same grids. The report gives observed convergence orders of approximately 1.70 and 1.68 for those two metrics, respectively. Flow and concentration fields were visualized to inspect the mixing behavior.
Interpretation and limits
The grid study checks sensitivity to spatial resolution for the reported metrics; it is not an experimental validation. The project uses simplified two-dimensional, laminar-flow assumptions, so its conclusions should not be generalized to turbulent or three-dimensional hardware without further analysis.
Source
Based on my “CFD Programming Project” report in the Job Applications archive. Values are from its Results section and grid-convergence tables.