Measure the actual conditions.
Four calibrated wall probes, inlet temperature, dry-air dewpoint, mass flow and independent pressure readings.
THE FIRST COLD-FLOW DEMONSTRATOR / CF-1.0
Can colder air
flow faster?
20°C and 0°C. The same copper channel.
The same pressure. A test we can build.
THE TEST ARTICLE
Small enough to build.
Specific enough to test.
Machined copper, gentle inlet and outlet adapters, four wall probes and two temperature-controlled plates.
STEP-derived geometry Unbuilt1.00mm
Channel gap
19mm
Internal width
50mm
Copper channel length
60.21Pa
Total-to-static pressure target
CHANGE ONE CONDITION
Keep the pressure.
Change the temperature.
Cooling changes air density and viscosity. We measure whether their combined effect increases mass flow through this channel.
INLET AIR 20°CCHANNEL WALL 20°COUTLET PRESSURE Recorded separately
Gentle entryCopper coreStraight outlet
Same geometry · Same pressure head · Dry airSchematic motion. Channel height is enlarged.
NUMERICAL STUDYUnder review
The full-gap warm/cold calculations are being checked for stable flow, grid sensitivity and heat balance.
PHYSICAL RESULTNot measured
The hardware has not been built. A calculation will not be presented as a measurement.
WHAT THIS CAN ESTABLISHOne flow effect
A positive experiment supports the measured channel conditions. The car’s performance requires its own evidence.
THE MEASUREMENT PLAN
A fair comparison,
before the first run.
The same article runs warm and cold in twelve paired blocks. Half begin warm; half begin cold. The order is fixed before measurements.
FROZEN TEST ORDERW = 20°C · C = 0°C
Each square is a thermal block, not a sensor sample. Sixty seconds of readings produce one run mean.
Keep the controls in the record.
Leak blank, warm–warm comparison and open bypass. Failed runs stay visible with their rejection reasons.
Make the uncertainty count.
The paired interval must clear the stated instrument bounds. More sensor samples do not become more independent experiments.
THREE SEPARATE ACCOUNTS
Flow, heat and electrical power.
A flow increase is useful information. Its energy cost must be measured alongside it.
The blower supplies pressure.
Record the pressure head and flow. Pressure work is Δp × volume flow; blower electrical input is measured separately.
The controller removes heat.
Hold the actual wall temperature. Record cooling-system, pump and heater input instead of treating the cold boundary as free.
Wall probes and power metersThe meter measures mass flow.
Compare warm and cold under the recorded conditions. A compact multi-channel core and its manifold will need a separate model and test.
Calibrated low-drop flow meterTHE EVIDENCE RECORD
Open the design.
Inspect the result.
The files below separate the prototype specification, numerical verification and future measurements.
A dimensioned article.
Exact fluid volume, copper assembly, probe pockets and review drawing.
Geometry and scope ↗3D model ↘Analysis that can say no.
Empty, incomplete, unstable and synthetic records are checked before any supported-effect decision.
Verification results ↗Current measurement result ↗The physical comparison.
Fabricate, inspect and calibrate the rig. Run the controls and twelve paired blocks.
Calibration record template ↗Discuss a laboratory test ↗Source material
KME Cu-OFE material data ↗NIST copper properties ↗Furness pressure instrument data ↗Alicat flow instrument data ↗
Instruments are candidates, with catalogue bounds carried into the protocol. Final calibration and as-built dimensions govern the experiment.