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FluidPeek

Interactive Fluid Simulation Platform

Search specialized CFD research sources. Gallery is not included.
Gallery
Run
Learn
01

Bring in the shape.

Import your 3D model and automatically generate the surrounding fluid domain.

02

Discretize the space.

Discretize the domain into computational cells that the solver can calculate.

03

Solve each cell.

Solve the Navier-Stokes equations to compute pressure and velocity in each cell.

04

Watch the flow.

Visualize the flow using velocity fields, vectors, and streamlines.

05

Read the field.

Use contours to inspect speed, pressure, wake behavior, and high-load regions.

06

Keep the result.

Save the result to your Gallery so it can be reviewed, compared, and shared later.

Shape. Wind. Flow.

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CFD Source Search

Search specialized CFD websites, then open a result as a Three.js preview.

Type a CFD keyword or paste a direct 3D file URL.

FluidPeek Learn

Learn flow by testing shapes.

01

2D CFD mini game

Cd, Cl, and L/D

Use drag, lift, and lift-to-drag ratio to compare shapes. Draw a 2D body below and run a lightweight CFD test.

CdDrag coefficient. Lower usually means less resistance.
Cl ↑Lift coefficient. Upward force is positive.
L/DLift divided by drag. Higher is better for wing-like shapes.

2D CFD mini game

Shape the flow.

Draw one closed body. Keep enough area, spend limited ink, then compare Cd, Cl, and L/D.

Draw a closed body. Low Cd or high L/D wins.
02

Read next

What does CFD calculate?

CFD breaks a flow field into cells, solves velocity and pressure in each cell, then turns those numbers into visible flow patterns.

03

Next

Wakes, separation, and vortices

Separated flow creates slow wakes and swirling structures. These patterns explain why blunt shapes usually have high drag.

04

Planned

Pressure, velocity, and surface flow

Pressure and velocity contours show where a shape accelerates flow, creates suction, or produces force.

Everyday Flow 01

Why does a flag flutter?

A flag moves because the wind around it keeps separating, swirling, and changing pressure. CFD turns that invisible motion into visible patterns.

1Wind meets fabric
2Pressure changes
3Vortices shed
01 / WIND

The wind cannot pass through the flag.

Air has to split, turn, and speed up around the fabric. That creates uneven pressure on the two sides.

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02 / PRESSURE

The force keeps switching sides.

When one side has lower pressure, the flag is pulled that way. A moment later, the flow changes and the pull can reverse.

UpUp pUpU UpUp
03 / VORTICES

Small swirls leave the trailing edge.

These alternating vortices are why the motion feels rhythmic instead of random.

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04 / CFD VIEW

The invisible flow becomes readable.

Velocity colors, pressure maps, particles, and streamlines help show where the air speeds up, slows down, and starts to swirl.

Velocity
Pressure
Forces
Scene tree
CFD CFD SIMULATION Solved result

Set Condition

Wind direction
Ground plane
Ground direction
Preview level
Processing visualization...