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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Then, for a wide channel: The Froude Number Fr is used to characterize a jump. Assume no energy losses, and that the channel is wide compared to its depth. Hidrolika Saluran Terbuka Download Report.
Step-down; use to move jump downstreamHorizontal Expansions and ContractionsSimilar principles apply. Chapter 13 on Hydraulic Structures is all worth a read.
Headwater depth depends on allowable depth eg to avoid overtopping. The energy dissipation may require the bed to be protected against scour and it is necessary therefore to know what length to protect. Baffle blocks are often used to increase energy dissipation.
The depth saluram of the gate is 2.
Aliran melalui saluran terbuka Documents. Hidrolika Saluran Terbuka Documents. CulvertsDefinitionDesign of culvertsAnalysis of existing culvertsDefinition of CulvertsCovered channel or pipe carrying a watercourse under an obstruction such as a road.
Hidrolika Saluran Terbuka
Approach VelocityPrevious equation is derived from Bernoulli assuming the approach ie upstream velocity is zero. 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.
Published on Nov View 23 Download 0. ReferenceNone for this part. Sluice GatesGiven upstream water levelDetermine required gate opening to pass a particular dischargeEnergy principle applies: Locating a Hydraulic JumpThe location of the hydraulic jump is controlled by the downstream depth typically normal depth.
Definition SketchDesign Principlesadequate size to pass debris thus avoiding need sapuran a trash screenself-cleansing debris and silt removal avoid hidroli,a or cross-section changes which might reduce capacity, catch debris or lead to silting upvisual appearanceease of constructionlow maintenancerisk to children, drunken students etc.
Various values and formulae for CD, which can vary particularly at low flows when viscosity and surface tension come more into playSubmergenceModular flow is flow when downstream level is too low to affect flow over weir you design for this. The six possible types of flow as shown.
Typically made from precast sections. ExampleAn existing box culvert is 1.
Hidrolika Saluran Terbuka
Kondisi aliran pada culvert Documents. Pratikum Hidrolika Saluran Terbuka Documents. Stilling BasinsIt is often necessary to control the location of a hidroika jump. Determine the capacity of the culvert. ExampleA vertical, underflow sluice gate 3m wide is opened to 0.
Hidrolika Saluran Terbuka | Ir. DWI PRIYANTORO, MS —- Teknik Pengairan
Free flow and surcharged conditions. 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. These equations can be used to determine the depths upstream or downstream of a hydraulic jump.
Determine where the hydraulic jump forms. This type of weir is cheaper to construct hidolika more resilient than sharp-crested or V-notch, but V-notch is more sensitive at low flows. What vertical expansion would be required to ensure the jump starts at the vena contracta, and what is the corresponding height of the jump. The depth upstream of the gate is 5.