Simulations
15 simulations
Damped Harmonic Oscillator
Waves & Oscillations
A mass on a spring with viscous damping. Change mass, stiffness, and damping and watch the motion, energy, and damping regime respond.
Wave Superposition
Waves & Oscillations
Combine travelling waves with adjustable amplitude, frequency, and phase to explore interference, beats, and standing waves.
Electric Field of Point Charges
Electric & Magnetic Fields
Place and drag charges to see field vectors, field lines, and equipotentials, and probe the field strength at any point.
Magnetic Field of Currents
Electric & Magnetic Fields
Drag current-carrying wires and see the magnetic field, field lines, and field strength around wires and coils.
Flow Around Obstacles
Fluid Mechanics
A 2D lattice Boltzmann flow solver showing attached flow, separation, and the Kármán vortex street as the Reynolds number increases.
Beam Deflection
Solid Mechanics & Stress
Build any straight beam from fixed supports, pins, rollers, and hinges, load it, and get the reactions and the normal force, shear force, bending moment, slope, and deflection diagrams.
Truss Analysis
Solid Mechanics & Stress
Build a plane truss from joints, members, supports, and loads, and get every member force, the reactions, and the joint displacements, with worked solutions by the method of joints, the method of sections, and the unit-load method.
Beam Buckling
Solid Mechanics & Stress
Build a compressed member from supports, joints, springs, and axial and lateral loads, and find its critical buckling load, mode shapes, effective length, and second-order behaviour, with stability checks and a worked solution of the buckling equation.
Transient Heat Conduction
Heat Transfer & Thermodynamics
Watch temperature spread through a wall, a plate, a cylinder, or a sphere. Set the material, each surface's condition, hot blocks, and heat sources, and compare the simulation with the exact series solution, worked out step by step.
Converging–Diverging Nozzle
Gas Dynamics
Explore choked flow, supersonic expansion, and normal shocks in a de Laval nozzle.
Two-Mass Vibration Modes
Vibrations & Dynamics
Couple two masses with springs and discover natural frequencies and mode shapes.
PID Controller Tuning
Control Systems
Tune proportional, integral, and derivative gains and see their effect on step response and stability.
RLC Circuit Response
Circuit Analysis
Step and AC response of series RLC circuits, with the direct analogy to mechanical oscillators.
Thin Lens Ray Tracing
Optics & Wave Propagation
Move objects and lenses to see how images form, with principal rays drawn live.
ODE Integrator Comparison
Numerical Methods
Compare Euler, Verlet, and Runge–Kutta methods on the same problem and see how error and stability differ.