How do I simulate a bridge girder?

Open this page and use the live Fin Cooling tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.

Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.

Can I use my own numbers?

Absolutely — every input is adjustable, and with data import you can drive a bridge girder from your own measurements.

Use case · powered by Fin Cooling

Fin Cooling for a bridge girder

Simulate a bridge girder live in your browser. This runs the real Fin Cooling solver — adjust the inputs, watch it respond instantly, and export the result. No install, no account.

For:Students Researchers Educators Engineers Hobbyists & Makers K-12 Students First Responders

Fin CoolingLive

heat sinks & extended surfaces

Controls

Presets

Conductivity k (W/m·K)

Convection h (W/m²·K)

Fin thickness (m)

Fin length (m)

Base temp (°C)

A fin extends a hot surface into the air to shed more heat. Temperature falls along it as θ(x)/θ_b = cosh(m(L−x))/cosh(mL). Long, thin, low-conductivity fins run cool at the tip — wasted area, captured by the fin efficiency. Educational tool.

▶ Run in Python

Data Inspector

Tip temperature86.7 °C

Fin efficiency88%

Heat dissipated330.3 W

Governing equation

\frac{θ}{θ _{b}} = \frac{cosh ( 12.9 ( 0.05 - x ))}{cosh ( 0.65 )}, m = \frac{2 h}{k t}

Reading this result: Balanced fin (mL=0.65): a practical compromise at 88% efficiency, with the tip still 62 °C above ambient.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

or unlock everything with Pro →

About this simulation

The full Fin Cooling tool models a bridge girder with the same numerics engineers and scientists use — running entirely client-side. Change any parameter and the result updates in real time, so you can build intuition, check a design, or teach the concept without spreadsheets or installs.

More you can do with Fin Cooling

Fin Cooling for a cantilever balcony Fin Cooling for a floor joist Fin Cooling for a roof rafter Fin Cooling for a steel beam Fin Cooling for a timber deck Fin Cooling for a crane boom Fin Cooling for a retaining wall Fin Cooling for a stair stringer

Other ways to simulate a bridge girder

2D Fluid (CFD) for a bridge girder 3D CFD for a bridge girder 3D FEA Space Frame for a bridge girder FEA Truss for a bridge girder Meshing + BCs for a bridge girder RLC Circuit for a bridge girder

Frequently asked questions

How do I simulate a bridge girder?: Open this page and use the live Fin Cooling tool below — set your inputs and the simulation runs instantly in your browser using real numerics. No install, no account needed.
Is it free?: Yes. The simulation runs free in your browser. A one-time unlock or a Pro plan adds advanced parameters, saved presets, data import, and clean exports.
Can I use my own numbers?: Absolutely — every input is adjustable, and with data import you can drive a bridge girder from your own measurements.