化学工程
ToolFusion / Airless Spray Pump / Engineering Tools

Project Tool: CFD-Based Fluid Path Optimization for Airless Spray Pumps

Specification & Integration Verification

F6 Composition for CFD-Based Fluid Path Optimization for Airless Spray Pumps

● Not Golden Verified ● Project Trust Verified Runnable: 4 / 7 steps
VERIFIED SCOPE
○ compute_cavitation_number CALCULATION Runnable
○ verify_cavitation_number_minimum PASS / FAIL capable Runnable
○ identify_peak_velocity_location CALCULATION Runnable
○ estimate_wall_shear_rate_from_gradient CALCULATION Partial
○ verify_velocity_ceiling PASS / FAIL capable Runnable
○ compute_velocity_coefficient_of_variation CALCULATION Manual Workflow
○ evaluate_oka_erosion_rate CALCULATION Partial
⚠ This tool does not currently verify Validate cavitation number lower bound per flui..., Validate parametric geometry against manufactur..., Quantify flow uniformity at nozzle exit plane, Detect cavitation-prone low-pressure regions, Perform constrained multi-objective ranking wit....
PROJECT INPUTS

Runnable deterministic steps: 4 / 7. Enter the project conditions used by this verification workflow. Prefilled values (12/16 inputs) are demonstration inputs, not recommended design values.

01Step 1: compute_cavitation_numberFormula
Pa
Pa
Pa
Quantify local susceptibility to cavitation inception using thermodynamic and hydrodynamic state variables.
02Step 2: verify_cavitation_number_minimumValidation Rule
Ensure cavitation risk is mitigated per system-level reliability requirement.
03Step 3: identify_peak_velocity_locationFormula
m/s
m/s
m/s
Locate regions exceeding safe velocity thresholds that may induce erosion or atomization instability.
04Step 4: estimate_wall_shear_rate_from_gradientFormula
m/s
m
Quantify mechanical stress on wall material to feed erosion life models (e.g., Oka).
05Step 5: verify_velocity_ceilingValidation Rule
Prevent turbulent kinetic energy amplification and particle impingement damage.
06Step 6: compute_velocity_coefficient_of_variationManual Workflow
m/s
Quantify spatial consistency of momentum delivery at atomization origin.
07Step 7: evaluate_oka_erosion_rateFormula
m/s
dimensionless
GPa
s⁻¹
Predict localized material loss to inform maintenance intervals and geometry hardening strategies.

⚠ Runnable deterministic steps: 4 / 7. Steps marked "Input Required" or "Example Input Required" need user-provided engineering values before calculation.

Deterministic calculation · Results become stale when engineering inputs change.
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ENGINEERING EVIDENCE

Golden Coverage0 / 7
Project Trust11 / 11 PASS
RuntimeDeterministic
Components0 small tools, 7 steps

SCOPE & LIMITATIONS

NOT CURRENTLY VERIFIED
○ Validate cavitation number lower bound per fluid thermodynamics
○ Validate parametric geometry against manufacturing feasibility rules
○ Quantify flow uniformity at nozzle exit plane
○ Detect cavitation-prone low-pressure regions
○ Perform constrained multi-objective ranking with normalization and weighting
These capabilities are outside the current verified workflow.

HOW THIS VERIFICATION WORKS

  1. Step 1: compute_cavitation_number — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  2. Step 2: verify_cavitation_number_minimum — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  3. Step 3: identify_peak_velocity_location — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  4. Step 4: estimate_wall_shear_rate_from_gradient — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.
  5. Step 5: verify_velocity_ceiling — compares engineering inputs against deterministic thresholds and produces a PASS or FAIL decision.
  6. Step 6: compute_velocity_coefficient_of_variation — engineering workflow step. Follow the documented method for manual execution.
  7. Step 7: evaluate_oka_erosion_rate — performs a deterministic calculation from the provided inputs. No acceptance criterion is applied; the result is CALCULATED only.

This tool coordinates 2 validation steps and 5 calculation steps. The overall engineering decision uses ALL_REQUIRED_VALIDATION_PASS aggregation: only validation steps contribute to the pass/fail outcome; calculation steps produce data only.

METHODS & EQUATIONS

All formulas are resolved from canonical runtime definitions and executed deterministically by the client-side engine.

Step 1: compute_cavitation_number

Formula(p_s - p_v) / q

Step 2: verify_cavitation_number_minimum

Validation Rule
cavitation_number > 2.5 [customer_requirement:Project_Spec_3.7.2]

Step 3: identify_peak_velocity_location

Formulasqrt(pow(u_x,2)+pow(u_y,2)+pow(u_z,2))

Step 4: estimate_wall_shear_rate_from_gradient

Formulaabs((u_max - 0.0) / delta_n)

Step 5: verify_velocity_ceiling

Validation Rule
max_velocity_magnitude <= 30 [engineering_standard:ISO_20484-2018]

Step 6: compute_velocity_coefficient_of_variation

Manual Workflow
sqrt(sum(pow(u_exit_i - mean(u_exit_i), 2)) / (length(u_exit_i) - 1)) / abs(mean(u_exit_i))

Step 7: evaluate_oka_erosion_rate

Formula1.2e-6 * pow(v_imp, 2.3) * phi * pow(3.0 / H_v, 0.5) * gamma_w

UNDERSTANDING THE RESULTS

PASS
A proven validation criterion passed. The engineering input satisfies the deterministic threshold.
FAIL
A proven validation criterion failed. The engineering input does not satisfy the deterministic threshold.
CALCULATED
A deterministic calculation completed, but no acceptance criterion exists for this step. CALCULATED does NOT mean PASS.
RESULT NOT VALID
Runtime executed but engineering validity requirements were not met.
INCOMPLETE
Required inputs or workflow steps are incomplete.

The overall decision reflects only validation steps. Calculation steps produce numerical results without pass/fail claims.

WHEN TO USE THIS TOOL

  • When deterministic Airless Spray Pump engineering verification is needed for project-specific conditions.
  • For calculation of compute_cavitation_number (Step 1).
  • For validation of verify_cavitation_number_minimum (Step 2).
  • For calculation of identify_peak_velocity_location (Step 3).
  • For calculation of estimate_wall_shear_rate_from_gradient (Step 4).
  • For validation of verify_velocity_ceiling (Step 5).
  • For calculation of compute_velocity_coefficient_of_variation (Step 6).
  • For calculation of evaluate_oka_erosion_rate (Step 7).
  • For deterministic pre-checks before formal engineering review or submission.

When NOT to use this tool: This tool does not replace laboratory testing, formal engineering analysis by a licensed professional, or code-compliance certification. It performs deterministic threshold comparison and calculation only.

ENGINEERING FAQ

What does this verification tool check?

This tool performs 7 deterministic engineering steps: (1) compute_cavitation_number, (2) verify_cavitation_number_minimum, (3) identify_peak_velocity_location, (4) estimate_wall_shear_rate_from_gradient, (5) verify_velocity_ceiling, (6) compute_velocity_coefficient_of_variation, (7) evaluate_oka_erosion_rate.

What does a PASS result mean?

A PASS result means the validation step's deterministic threshold comparison was satisfied. It does not constitute laboratory certification or code compliance.

What does a CALCULATED result mean?

A CALCULATED result means the deterministic calculation completed, but no acceptance criterion is applied to this step. CALCULATED does NOT mean PASS.

What is not currently verified by this workflow?

Capabilities not currently verified include: Validate cavitation number lower bound per fluid thermodynamics, Validate parametric geometry against manufacturing feasibility rules, Quantify flow uniformity at nozzle exit plane, Detect cavitation-prone low-pressure regions, Perform constrained multi-objective ranking with normalization and weighting.

How many steps are golden verified?

0 out of 7 steps have been verified with deterministic golden test cases.

COMPONENT TOOLS

This workflow currently contains no bound executable Small Tools. Steps are defined by engineering methods and reference materials.

CalculationWorkflow StepCavitation number verification at minimum static pressure location
ValidationWorkflow StepCavitation number verification at minimum static pressure location
CalculationWorkflow StepMaximum local velocity hotspot identification and shear rate estimation
CalculationWorkflow StepMaximum local velocity hotspot identification and shear rate estimation
ValidationWorkflow StepMaximum local velocity hotspot identification and shear rate estimation
CalculationWorkflow StepNozzle exit velocity uniformity index computation
CalculationWorkflow StepErosion rate prediction using Oka model for stainless steel wetted surface