Dam brake simulation study in OPENFOAM.

The objective of this project was to simulate and analyze the transient fluid dynamics of a dam break scenario using OpenFOAM, investigating the effects of mesh refinement on the accuracy of velocity and pressure predictions through a grid independence study.
The simulation was done in OpenFOAM open-source software using the interFoam solver with a volume-of-fluid (VOF) method to track the water-air interface. The dimension of the tank geometry is about 0.584 m × 0.584 m, and pressure-velocity coupling uses the PISO algorithm.
The main investigation compares a coarse mesh (2,268 cells) vs. a fine mesh (9,072 cells). The finer mesh produced notably different results—1.2 m/s velocity and 650 MPa pressure at the obstacle, versus 0.9 m/s and 800 MPa for the coarse mesh—roughly a 25% difference in velocity and 18.75% in pressure.
Velocity peaks at about 2.1 m/s around 0.1 seconds after the break, then gradually settles to ~0.2 m/s by 0.7 seconds. The study concludes that mesh refinement is critical for accuracy in transient flow simulations like this.

Double Pendulum simulation study in MATLAB.

Doublependulumanimation2(Euler).mp4

The objective of this project was to simulate the chaotic behaviour of the double pendulum using second order non linear differential equation in MATLAB.
Different method was implemented and compared like Runge kutta 4, Lagrangian method, and Euler's method to solve non-linear differential equation.
We visualize angular displacement, velocity, and acceleration of the both bob over time and plotted obtained data in the graph.
What we learnt was proper selection of step size is important to get smooth initial pendulum motion. After few seconds, the nature of pendulum becomes unpredictable.

3D printed exoskeleton arm prototype.

This is 3D printed robotic exoskeleton arm to hold a human hand. It has a two NEMA stepper motor which control dual degree of motion. The FSR sensor at the end of the arms helps to identify the force exerted by human hand. bAsed on the voltage obtained from the force sensor further analysis is conducted.

3D printed robot exoskeleton arm.

Simulation study on three different cross section geometry when load applied.

This is a model of three different cross section geometry made in the software autodesk fusion 360 for structural testing.
This simulation study was conducted in ANSYS with proper mesh convergence and realistic load boundary conditions.
When load was applied in the bottom surface, the geometry (steel) revealed that S- curve member on the left side failed first at 339.59 MPa. Though this are just simulated on software and no actual physical testing was done. Based on the data, assuming FOS lot more it should hold a decent amount of load before failure.

Hanger bracket

This hager bracket was made to support a load of ~300 N without breaking or bulging.
The best part was using topology optimization, I reduced its _42 % material without compromising the structural integrity.
All the boundary conditions and simulation were conducted using ANSYS software and CAD modelling was made in autodesk fusion 360.

Thermal analysis of a electric coil and a heating pot.

Performed steady-state & transient thermal analysis of a Nichrome coil and aluminum pot in ANSYS R2, using a 2mm mesh over 60 seconds to study heat transfer and energy distribution.
Coil peaked at 478.13°C while the pot reached 177.55°C (steady-state), with transient results of 452°C and 130°C respectively, capturing real-world heat dissipation behavior.
Conducted unaveraged, averaged, and nodal difference studies to detect singularities and evaluate thermal efficiency, strengthening understanding of temperature gradients and heat flux distribution.

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