Engineering · Calculator

Cooling channel pressure drop.

ΔP estimate for a single straight rectangular cooling channel — the kind we machine for HPC cold plates and direct-to-chip thermal interfaces. Use it to size flow rate against pump capacity, or to validate channel cross-section before machining.

Channel geometry & flow

Channel width (mm) Channel height (mm) Channel length (mm) Flow rate (L/min) Coolant fluid Surface roughness (µm Ra)

Pressure drop

ΔP across channel

—

Reynolds number —

Flow regime —

Velocity —

Friction factor (f) —

Hydraulic diameter (D_h) —

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Single straight channel, fully-developed flow. For multiple parallel channels, divide flow by the number of channels and treat one. For serpentine routing, multiply by number of equivalent legs and add bend losses (~1× ΔP per 180° bend).

Keep exploring

Related tools & references

Thermal expansion stack→

Pair pressure-drop with thermal growth across the plate.

Material datasheets→

Thermal conductivity by alloy for cold-plate design.

Material selector→

Compare aluminum and copper options for heat transfer.

DFM checklist→

Design drilled or machined channels for manufacturability.

Have a cold plate or manifold to machine?

Send your model and we'll quote drilled or pocketed cooling channels in aluminum, copper, or stainless. Aerospace, medical, and defense work welcome.

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