Rapidly Varied Flow â The Hydraulic Jump Use of hydraulic jumps Specific force revisited Sequent or conjugate depths Types of jump Uses of. View HIDROLIKA SALURAN from SI at Bandung Institute of Technology. HIDROLIKA SALURAN TERBUKA SAADAH MEILUFI, ST MT. Hidrolika saluran terbuka (open channel hydraulics): Bab I: prinsip-prinsip dasar hidrolika saluran terbuka; Bab II: aliran seragam / disusun oleh Martono.

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Stilling Basin DesignThere is a lot of empirical workA good source of design guidelines is the US Bureau of Land Reclamation USBR Typically the length of a hydraulic jump will approximate to 6 y2-y1where y2 and y1 are the downstream and upstream conjugate depths.

The depth upstream of the gate is 2. ExampleFlow enters a channel through an undershot sluice gate. Yerbuka Saluran Terbuka Download Report. These equations can be used to determine the depths upstream or downstream of a hydraulic jump.

Determine the flow through the gate and the horizontal force on the gate. Headwater depth depends on allowable depth eg to avoid overtopping. There is a trash hidrplika at the inlet with 12 20mm diameter bars in a 1.

May extend for many kilometres in cities. P3a can be obtained from hydrostatics. Aliran Dalam Saluran Terbuka – Gunadarma menganggap bahwa jumlah debit aliran sama dari masing Design and AnalysisFlow that a culvert must pass depends on upstream catchment.

ExampleA vertical, underflow sluice gate 3m wide is opened to 0.

Hidrolika Saluran-terbuka – Ven Te Chow – Google Books

This is a step-up; use it to move or fix jump upstreamVertical ExpansionSimilarly: Type varies with flow so multiple analysis required. Chapter 13 on Hydraulic Structures is all worth a read. CulvertsDefinitionDesign of culvertsAnalysis of existing culvertsDefinition of CulvertsCovered channel or pipe carrying a watercourse under an obstruction such as a road. Pratikum Hidrolika Saluran Terbuka Documents.


The six possible types of flow as hidrolka. Sluice GatesGiven upstream water levelDetermine required gate opening to pass a particular dischargeEnergy principle applies: Determine where the hydraulic jump forms.

The maximum allowable headwater depth is 2. ImportantYou have to use Specific Force for hydraulic jumps because the friction loss in the fluid due to the eddying is significantSpecific Energy does not work because it neglects frictionSpecific Force wont work on weirs etc because it does not consider the force on the weir itself.

This oscillates from bed to surface and back, producing waves of irregular period downstreamAvoid in design. Various types of flow can exist as follows. Free flow and surcharged conditions. The Froude Number Fr is used to characterize a jump. Then, for a wide channel: The depth upstream of the gate is 5.

Hidrolika Saluran Terbuka

If y2 yconj, the jump moves upstream and may break against the gate. To dissipate energy after a spillway etc and so prevent scouringTo recover head downstream of an obstructionTo induce mixing and aerationSpecific Force RevisitedOver a short reach of channel, hjdrolika friction forces can be ignored and if the slope is mild the downstream self-weight body forces can also be ignored.

Stilling BasinsIt is often necessary to control the location of a hydraulic jump. A step in the bed is used to control the position of the jump, ensuring that y3 is artificially raised to the required level to force the jump.

The downstream channel is rectangular, 3. Hidrolika Terapan Sal Terbuka Documents. ExampleAn existing box culvert is 1.

Kondisi aliran pada sluran Documents. Example 1Considering the previous example on a hydraulic jump, determine the size of the step required to bring the start of the hydraulic jump to the vena contracta after the sluice gate.

Determine the capacity of the culvert. What vertical expansion would be required to ensure the jump hidrolikaa at the vena contracta, and what is the corresponding height of the jump. Typical Stilling Basin DesignExpansions terbuak ContractionsVertical ContractionConsidering a vertical contraction, the momentum change between sections 2 and 3 may be written as: Assume no energy losses, and that the channel is wide compared to its depth.


Definition SketchDesign Principlesadequate size to pass debris thus avoiding need for a trash screenself-cleansing debris and silt removal avoid slope or cross-section changes which might reduce capacity, catch debris or lead to silting upvisual appearanceease of constructionlow maintenancerisk to children, drunken students etc. Published on Nov View 23 Download 0.

Typically made from precast sections. ReferenceNone for this part. Step-down; use to move jump downstreamHorizontal Expansions and ContractionsSimilar principles apply.

Approach VelocityPrevious equation is derived from Bernoulli assuming the approach ie upstream velocity is zero. Hidrolika Saluran Terbuka Documents. Aliran melalui saluran terbuka Documents. Various values and formulae for CD, which can vary particularly at low flows when viscosity and surface hidrplika come more into playSubmergenceModular flow is flow when downstream level is too low to affect flow over weir you design for this.

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Can connect to chart recorder or satellite etc. Locating a Hydraulic JumpThe location of the hydraulic jump is controlled by the downstream depth typically normal depth. Modular limit occurs when downstream level rises above this limit and flow over weir is affectedCan use Villemonte formula if downstream depth y3 can be estimated.

Also, the coefficient of discharge Cd hkdrolika be defined as: Baffle blocks are often used to increase energy dissipation.