Sphere Flow
Size the sphere and freestream state. The calculator uses shared drag-regime logic to update the wake, separation, and coefficient curves.
Flow regime
set by Reynolds number
Drag coefficient
CD
Drag force
freestream load
Reynolds number
rho V D / mu
Separation angle
from front stagnation point
Density
selected fluid
Dynamic viscosity
mu
Wake length
estimated separated region
Flow around a sphere
Reynolds number controls separation, wake size, and the drag coefficient used in the force result.
Drag coefficient versus Reynolds number
current CD 0.2711
Surface pressure coefficient
0° stagnation to 180° rear face
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.