Full-Scale Cleaning Shoe Laboratory Test Rig
Includes cross-flow fan, eccentric reciprocating chaffer and shoe sieve, and air duct vanes.
Agricultural Engineering / Cleaning Shoe Airflow Separation
FREE TO EXPLORELABORATORY 10 · AGRICULTURAL ENGINEERING
Combine Cleaning Shoe Aerodynamic Airflow & Grain-Chaff Separation
Measure the aerodynamic velocity distribution and chaff winnowing separation efficiency across a reciprocating combine cleaning shoe sieve under variable cleaning fan speeds. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
CHAFF REMOVAL EFFICIENCY R_C—
FIELD & TEST CELL TELEMETRY
Ready to sample with Air Velocity U = 4.6 m/s.
Adjust Air Velocity U, then execute agricultural trial.
Agricultural engineering telemetry and biosystems states are evaluated rigorously using 64-bit IEEE 754 precision. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity agricultural and environmental modeling.
Agricultural assumptions and boundary condition limits
Laboratory stand uses clean ambient air; field combines experience engine heat and ambient crosswinds that alter air density. Evaluated using a standardized mixture of 70% wheat grain and 30% wheat chaff (by weight) at chaffer sieve louver opening of 12 mm and stroke frequency of 300 cycles/min.
Agricultural apparatus & field instrumentation sensors.
Variable-Speed Centrifugal Cleaning Fan
Delivers controllable airflow velocities from 2.0 to 9.0 m/s across the sieve area.
Multi-Point Hot-Wire Anemometer Array
Maps 2D airflow velocity profiles across 16 grid locations above the chaffer sieve.
Clean Grain Catch Hopper & Load Cell
Continuously logs mass of clean grain successfully passing through the sieves.
Rear Air-Chaff Cyclone Separator
Traps all airborne chaff blown out the rear to quantify winnowing separation.
Shoe Grain Loss Sensor
Acoustic impact plate that counts grain kernels blown over with the chaff.
FOLLOW THE METHOD
A reason behind every step.
Measure the aerodynamic velocity distribution and chaff winnowing separation efficiency across a reciprocating combine cleaning shoe sieve under variable cleaning fan speeds. Standardized parameter settings: 3.0, 3.8, 4.6, 5.4, 6.2, 7.0 m/s.
01
Sieve Louver & Fan Choke Setup
Set the chaffer sieve louvers to 12 mm opening and lower cleaning sieve to 8 mm opening, aligning the fan windboard deflectors toward the front third of the chaffer.
02
Velocity Grid Mapping
Engage the cleaning fan and traverse the hot-wire anemometer array across the sieve grid to establish average baseline face air velocity U = 3.0 m/s.
03
Test Mixture Preparation
Blend a standardized 15.0 kg test batch containing 10.5 kg clean wheat and 4.5 kg wheat chaff (70:30 grain-to-chaff ratio).
04
Feed Delivery & Sieve Operation
Engage sieve reciprocating shake (300 cycles/min) and feed the mixture onto the pre-cleaner pan over 30 seconds.
05
Fraction Separation & Weighing
Weigh clean grain collected in the bottom hopper (m_clean), chaff captured in the rear cyclone (m_chaff_out), and residual chaff on the sieve to calculate chaff removal efficiency R_c = (m_chaff_out / m_chaff_total) × 100%.
06
Airflow Velocity Stepping
Increase fan speed across velocities of 3.8, 4.6, 5.4, 6.2, and 7.0 m/s, recording chaff removal R_c and monitoring grain blown-over loss.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Cleaning Shoe Airflow Separation mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
R_c = k_c · U = 14.5000 · U
| # | Cleaning Fan Air Velocity U (m/s) | Chaff Removal Efficiency R_c (%) | Cleaning air velocity U (m/s) | Chaff removal efficiency R_c (%) | Remove |
|---|
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