Sluice Gate
Product Code : EL-EFFCA-11062
Quick answer: The sluice gate is a vertical, height-adjustable gate that fits the Lab Exports experimental flume. Students use it to measure discharge under a gate in free and submerged flow, observe the vena contracta and study the hydraulic jump that forms downstream. The opening is set by hand and read on a scale. Lab Exports manufactures it in Delhi for engineering colleges, polytechnics and TVET institutes.
Specifications
| Feature | Detail |
|---|---|
| Use | Sluice gate model for the experimental flume |
| Height adjustment | Manual |
| Opening measurement | Scale for reading the height of the gate opening |
| Sealing | Lateral sealing lips against the flume walls |
How the sluice gate experiment is done
A sluice gate is an underflow control: water ponds upstream and leaves beneath the gate as a fast, shallow jet. The jet contracts just past the gate lip to roughly 0.6 times the opening (the vena contracta), and the discharge per unit width is q = Cd * a * sqrt(2 g y1), where a is the opening and y1 the upstream depth. Comparing the measured flow with this relation gives the discharge coefficient Cd for each setting.
- Mount the gate in the flume and set a small opening on the scale.
- Set a steady discharge and read it on the flume's rotameter.
- Measure the upstream depth, the gate opening and the depth at the vena contracta.
- Raise the downstream water level until the jet is drowned and repeat for submerged flow.
- Change the opening and repeat to build a chart of Cd against opening.
Downstream of the gate the supercritical jet usually returns to subcritical flow through a hydraulic jump. Measuring the depths before and after the jump lets students check the momentum relation y2/y1 = 0.5 * (sqrt(1 + 8 Fr1^2) - 1) and estimate the energy lost in the jump.
Key features
- Vertical movable gate that creates a controlled backwater in the flume
- Opening set by hand and read directly on its scale
- Lateral sealing lips stop water bypassing the gate along the side walls
- Covers both free and submerged discharge conditions
- Makes the vena contracta and the downstream hydraulic jump easy to observe through the flume's glass walls
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the sluice gate at its works in Laxmi Nagar, Delhi, and supplies it to engineering colleges, polytechnics and TVET institutes in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Experimental Flume Flow Channel Apparatus products
- Experimental Flume Flow Channel Apparatus (EL-EFFCA-11061)
- Radial Gate (EL-EFFCA-11063)
- Ogee-Crested Weir with Pressure Measurement (EL-EFFCA-11065)
- Venturi Flume (EL-EFFCA-11066)
- Set of Plate Weirs, Four Types (EL-EFFCA-11068)
- Extension Element of the Experimental Flume (EL-EFFCA-11069)
The full range is in the Experimental Flume Flow Channel Apparatus section of the Engineering Lab range.
Frequently asked questions
What does a sluice gate experiment show?
It shows how discharge under a gate depends on the opening and the upstream depth, how the jet contracts to the vena contracta, and how a hydraulic jump forms downstream in free and submerged flow.
Which apparatus does the sluice gate fit?
It is a model for the Lab Exports Experimental Flume Flow Channel Apparatus and sits in its test section with lateral sealing lips.
What is the price of the sluice gate?
Prices are not published on the website. Add the sluice gate to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-EFFCA-11062 and the quantity, to receive a quotation.
Does Lab Exports manufacture the sluice gate?
Yes. Lab Exports manufactures the sluice gate at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code EL-EFFCA-11062.
Request a quote
Email [email protected] with the house code EL-EFFCA-11062 and the quantity, or add the sluice gate to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
