Nexus locks its picks before your CFD runs, then scores them against your real results. Drop any CSV below — Nexus works out whether it is your designs or your results.
1DROP YOUR DESIGNS
2CHECK & LOCK
3DROP YOUR CFD RESULTS
DROP A CSV HEREdesigns to lock, or CFD results to reveal • or click to choose a file
8 sample airfoils with published OpenFOAM results (Agarwal et al., Data 2024)
Saved to “My tests” below. When your CFD results are ready, drop the results CSV in the box above.
STEP 3 — REVEAL
RESULT
MY TESTS (this device)
TEST
LOCKED
DESIGNS
V8 PICK
STATUS
No tests yet.
ADVANCED SETTINGS — ALL 71 CFD VARIABLESModule & objectives • full V8 ranking • manual reveal by ID • import past results
71-PARAMETER CFD LIBRARYFlow, fluid properties, pressure, geometry, turbulence, thermal, boundary, airfoil, compressible, multiphase and solver/mesh parameters. Each module withholds its own CFD results (aerodynamic coefficients for every module, plus pressure drop or heat-transfer results where they apply). Withheld results are never sent to V8 before the lock.
HOW V8 SELECTSV8 ranks candidates only on the objectives and weights you freeze in step 5: each objective is scaled 0–1 across your candidates and combined by weight. Other columns are recorded in the lock but do not change the ranking.
SUCCESS RULE FIXED AT LOCKThe CFD outcome that decides “best”, and whether higher or lower wins, are chosen before the lock and sealed into the fingerprint. They cannot be changed when results are revealed.
1. SELECT CFD TEST
2. CFD VARIABLE SYSTEM
66 inputs and 5 withheld outcomes for the selected module are individually listed below. Each module has a small set of required inputs; the rest are optional.
The applicable subset is activated for each CFD experiment. Each module has a small set of required inputs; all other inputs are optional. Rows tagged “required” are needed for the selected module. After you load a CSV: green = mapped, red = required but missing from your CSV, gray = optional and not supplied, italic = withheld CFD outcome for this module (kept out of the lock and used only to score V8 afterwards).
FLOW (6)
01VelocityV
02Mass Flow Rateṁ
03Volumetric Flow RateQ
04Mach NumberMa
05Reynolds NumberRe
06Angle of Attackα
FLUID PROPERTIES (7)
07Densityρ
08Dynamic Viscosityμ
09Kinematic Viscosityν
10TemperatureT
11Specific HeatCp
12Thermal Conductivityk
13Speed of Sounda
PRESSURE (5)
14Static PressureP
15Total / Stagnation PressureP₀
16Inlet PressureP in
17Outlet PressureP out
18Pressure DifferentialΔP
GEOMETRY (8)
19LengthL
20WidthW
21HeightH
22DiameterD
23AreaA
24Curvatureκ
25Surface Roughnessε
26Hydraulic DiameterDₕ
TURBULENCE (5)
27Turbulence IntensityI
28Turbulent Kinetic Energyk
29Dissipation Rateε
30Specific Dissipation Rateω
31Eddy Viscosityμₜ
THERMAL (5)
32Wall TemperatureT wall
33Heat Fluxq″
34Heat-Transfer Coefficienth
35Prandtl NumberPr
36Nusselt NumberNu
BOUNDARY CONDITIONS (6)
37Inlet ConditionBC in
38Outlet ConditionBC out
39Wall ConditionBC wall
40Symmetry ConditionBC sym
41Far-Field ConditionBC far
42Moving-Wall VelocityV wall
AERODYNAMIC OUTCOMES — WITHHELD (5)
43Lift CoefficientCₗ
44Drag CoefficientCᴅ
45Moment CoefficientCₘ
46Lift-to-Drag RatioCₗ/Cᴅ
47Pressure CoefficientCₚ
AIRFOIL / BODY GEOMETRY (5)
48Chordc
49Spanb
50Camberm
51Maximum Thicknesst
52Leading-Edge Radiusr LE
COMPRESSIBLE FLOW (5)
53Total TemperatureT₀
54Static TemperatureT static
55Specific-Heat Ratioγ
56Gas ConstantR
57Pressure RatioP₂/P₁
MULTIPHASE (5)
58Volume Fractionα phase
59Phase Densityρ phase
60Phase Viscosityμ phase
61Surface Tensionσ
62Particle / Droplet Diameterdₚ
SOLVER / MESH (9)
63Cell CountN cells
64Minimum Cell SizeΔmin
65Maximum Cell SizeΔmax
66Wall Resolutiony+
67Time StepΔt
68Iteration LimitN iter
69Convergence Tolerancetol
70Discretization Orderorder
71Mesh Quality / Skewnessquality
4. UPLOAD CFD DATA
CSV is the primary company input method. Uploaded columns are mapped to the input variables above for the selected module. Withheld outcome columns are never sent.
DROP COMPANY CFD CSV HERECandidate IDs • physical inputs • geometry • operating conditions • applicable derived parametersNO FILE LOADED
Waiting for CFD CSV.
5. OBJECTIVES & FROZEN WEIGHTS
Choose which pre-run inputs V8 ranks on, whether higher or lower is better, and how much each counts. These are frozen and fingerprinted with V8's selection. Only numeric input columns from your CSV can be used; outcome columns never can.
SUCCESS RULE — FIXED AT LOCK (CFD OUTCOME, NOT AN INPUT)
Which CFD result will decide the best candidate, and whether higher or lower is better. This is sealed into the fingerprint and cannot be changed at reveal.
V8 SELECTION — LOCKED BEFORE ANY CFD RESULT
—
RANK (TIES AVERAGED)
CANDIDATE
V8 SCORE
6. REVEAL CFD RESULTS & VALIDATE
After you run your CFD, upload the real results here. The server re-checks the locked fingerprint, then scores V8's pick against the outcome and direction that were sealed in the lock. The first reveal for each submission is final; it cannot be re-scored. To validate an earlier test, paste its submission ID and fingerprint — both are required.
Submission locked before September 22, 2026?
Older locks did not seal a success rule. Choose one here; the result will be labelled “not pre-registered” and can never count as a HIT.
Needs columns: candidate_id + the outcome sealed in the lock.
—
—V8 pick's actual rank (ties averaged)
—Random pick, expected rank
—Rank correlation, V8 vs actual (1 = perfect)
—Fingerprint integrity
ACTUAL RANK
CANDIDATE
ACTUAL VALUE
V8 RANK
7. IMPORT PAST CFD RESULTS — TRAINING ONLY
Already have simulations on file? Upload them here so the CFD surrogate learns from day one. These are not blind tests: nothing is locked or scored, the scoreboard is not touched, and V8 is never affected. One row per design: candidate_id, the input columns, and the result columns you have (e.g. lift_to_drag_ratio). Uses the module and workspace selected above. If a later blind test contains a design identical to one imported here, the surrogate's pick on that test is marked "not blind" and left off the scoreboard.
No file chosen.
DATA STATUS
WAITING
Candidate rows—
Variables detected—
V8 CORE
FROZEN
Deterministic analysisON
Outcome leakageBLOCKED
LEARNING
ADVISORY
Changes V8's pickNEVER
Surrogate learns from revealed resultsYES, PER WORKSPACE
VALIDATION
BLIND
Server timestampAT LOCK
Success ruleSEALED AT LOCK
DETERMINISTIC CFD DECISION INTELLIGENCE.
NEXUS V8 CFD is designed to evaluate candidate configurations before corresponding CFD performance outcomes are revealed. Company data enters through a CSV workflow; V8 records its selection first, and the resulting CFD data can then be used for independent validation.
THE CFD SOLVER REMAINS THE AUTHORITY.
V8 does not replace validated CFD simulation. The evaluation is designed to test whether V8 can identify or rank promising configurations prospectively and reproducibly.
FROZEN CORE. SEPARATE, SEALED LEARNING.
V8's selection comes from the frozen V8 core alone and is never changed by learning. A separate CFD surrogate learns only from results a company has already revealed, only within that company's workspace, and its own prediction is sealed in the same lock as V8's and scored the same way.