Selected Projects
This sections contains a few of the project I have worked on outside of my internships. These demonstrate some of the skills mentioned on my resume.
Alpha Sweep CFD Study with STAR-CCM+
This project involved using a provided 3D model of a X-29 and performing a full CFD study, including an alpha sweep from 0 to 10 degrees angle of attack.
This included repairing the 3D model, closing all free edges and fixing non manifold surfaces. After splitting the X-29 into patches for refinement, a surface mesh, volume mesh, and prism layers were created. These were iterated upon to stay within 20 million cell limit while obtaining appropriate refinement at leading edges, separation zones, and wing tip vortices.
Then I created the boundaries, selected the appropriate physics conditions, boundary conditions, and selected convergence criteria and ran all 5 angle of attacks simulations to convergence. All of the solutions satisfied the convergence criteria of 3 percent normalized asymptotic convergence over 100 samples in less than 500 iterations.
The presentation can be downloaded below. Images of some slides from the presentation are also included below.
2D Conduction with Constant Heat Generation
The temperature distribution of a 2D slab with constant internal heat generation was derived and plotted in MATLAB. The temperature distribution was found by splitting the heat diffusion equation into a PDE and an ODE (which modeled the internal heat generation). The temperature distribution and error was calculated and plotted using MATLAB.
Images of portions of the derivation and code are shown below.
Maximum Chip Temperature in Fluent
This simulation was my first time performing a full CFD study in Ansys Fluent. I created the simple geometry in SolidWorks, prepared the model in Ansys Discovery, meshed in Fluent, setup physics models and materials, and ran solution to convergence. I used three different levels of mesh refinement to ensure the solution was not dependent on mesh size. Set the volumetric heat generation of the chip as the heat source.
Aerodynamic CFD Study with STAR-CCM+
This was my first project using CFD. This project involved using a provided 3D model of a Cessna 210 and performing a full CFD study. This involved creating a surface mesh, volume mesh, boundaries, and visualization scenes. I also selected the appropriate physics conditions, boundary conditions, and selected convergence criteria and ran the solution to convergence.
The surface and volume mesh underwent multiple iterations to obtain appropriate refinement within the maximum cell count limit. This involved creating meshes with appropriate refinement with a maximum of 3 million cells and 15 million cells. The meshing skills can be translated to any CFD work and is not limited to aerodynamic studies alone.
The final deliverable was a presentation that was delivered to an industry professional, and the presentation can be downloaded below. Images of some slides from the presentation are also included below.
Transient Conduction Temperature Distribution in 1D Slab
This involved calculating the temperature distribution in a slab with 1D conduction. The temperature distribution was found using separation of variables and applying the boundary and initial conditions. Used for loops in MATLAB to find the terms for the Fourier Series Expansion. The temperature distribution in the slab was plotted in MATLAB to validate boundary and initial conditions were accurate.
Images of portions of the derivation and code are shown below.
Gearbox Model
Utilized NACA airfoils to design gearbox in SolidWorks for Solar Regatta Club. Selected shape to minimize drag and maximize performance. Used an airfoil with no camber to avoid any lift force generation.
3D printed the part in two halves and later selected gasket to protect against water ingress. Created internal cutouts for gearbox components and shafts.
DC Motor Dynamic Modeling - MATLAB
This project involved using MATLAB and Simulink to model a motor based on manufacturer provided values. I used linear graphs and normal trees to determine equations for the state space method to find the system response of the motor. I then assembled the block diagram in Simulink and defined all necessary variables. Lastly, I used MATLAB to run the Simulink files and document system responses for the different cases
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