Agricultural Impact Sprinkler (4.8 mm Nozzle)
Standard brass agricultural impact sprinkler with 23° trajectory angle and drive vane.
Agricultural Engineering / Sprinkler Christiansen Uniformity
FREE TO EXPLORELABORATORY 18 · AGRICULTURAL ENGINEERING
Agricultural Impact Sprinkler Christiansen Uniformity Coefficient (CU) Catch-Can Analysis
Determine the radial water distribution profile, Christiansen Uniformity Coefficient (CU), and overlapping pattern efficiency of an agricultural impact sprinkler nozzle across varying operating pressures. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
CHRISTIANSEN UNIFORMITY COEFFICIENT CU—
FIELD & TEST CELL TELEMETRY
Ready to sample with Pressure P = 250.0 kPa.
Adjust Pressure P, 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
Indoor tests eliminate wind drift and atmospheric evaporative droplet losses occurring in open fields. Evaluated using a single 4.8 mm brass agricultural impact sprinkler mounted on a 1.2 m riser in zero-wind indoor catch-can grid with 12 m × 12 m simulated overlap.
Agricultural apparatus & field instrumentation sensors.
Indoor Catch-Can Matrix Array (100 Cans)
Graduated catch cans spaced on a 1.5 m × 1.5 m grid over a 15 m radius.
Booster Pump & Electronic Pressure Regulator
Supplies regulated water pressure from 150 to 400 kPa with digital readout.
Calibrated Graduated Measuring Cylinders
Measures water depth caught in each catch can with 0.5 mL precision.
Electronic In-Line Turbine Flowmeter
Records total sprinkler discharge rate Q (L/min) with 0.1 L/min accuracy.
Ultrasonic Droplet Velocity Sensor
Monitors jet breakup distance and droplet exit velocity.
FOLLOW THE METHOD
A reason behind every step.
Determine the radial water distribution profile, Christiansen Uniformity Coefficient (CU), and overlapping pattern efficiency of an agricultural impact sprinkler nozzle across varying operating pressures. Standardized parameter settings: 150.0, 200.0, 250.0, 300.0, 350.0, 400.0 kPa.
01
Catch-Can Grid Siting & Leveling
Lay out the catch cans in a square 1.5 m × 1.5 m matrix across the indoor test hall, ensuring all can rims sit level and at uniform elevation.
02
Riser Mounting & Pressure Set
Mount the impact sprinkler on the central 1.2 m vertical riser, setting the pressure regulator to initial low pressure P = 150.0 kPa.
03
Timed Test Precipitation Run
Start the sprinkler pump and allow the sprinkler to rotate continuously for exactly 30.0 minutes, distributing water across the catch-can grid.
04
Can Volumetric Auditing
Measure and record the depth of water caught in each can X_i (mm), computing the mean depth X_bar and the mean absolute deviation Σ|X_i - X_bar| / n.
05
Christiansen CU Computation
Simulate a 12 m × 12 m overlapping sprinkler layout and calculate the Christiansen Uniformity Coefficient CU = 100·[1 - Σ|X_i - X_bar| / (n·X_bar)].
06
Pressure Stepping
Repeat the procedure at 200, 250, 300, 350, and 400 kPa, plotting CU versus pressure to extract the sensitivity slope s_p.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Sprinkler Christiansen Uniformity mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
CU = s_p · P + CU_0 = 0.0550 · P + 64.0000
| # | Sprinkler Operating Pressure P (kPa) | Christiansen Uniformity Coefficient CU (%) | Operating pressure P (kPa) | Christiansen Uniformity CU (%) | Remove |
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