FYP Presentation v2.0

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Title Of Presentation (Verdana font size 28, bold)

FYP Presentation: Hydraulic Jump in Aerated Flowspresented by

Dy, Raelene Ina Bianchi MendezFYP Student, Environmental Engineering Year 4School of Civil and Environmental Engineering

10 May 2016

1

ContentsIntroductionProject ObjectiveLiterature ReviewProof of Hydraulic Jump in UDRSMethodologyResultsConclusionFuture Work/RecommendationsReferences

1. IntroductionSingapore is constantly looking for ways to augment its water supply. A sizeable amount of rainfall ends up in the sea due to a lack of reservoir space on land (Kotwani, 2015). PUB looking into the design and development of an Underground Drainage and Reservoir System (UDRS) to store excess rainwater. This FYP is part of study on effects of transporting water in conduits on the pipes themselves at least 150m below the surface.

Source: National Water Agency PUB looks underground for Water Storage Solutions, Straits Times, June 2015

2. Project ObjectiveTo observe and describe the behavior of the flow and the resulting hydraulic jump inside a closed conduit Focus on velocity and pressure To compare behavior of classical hydraulic jump to that of closed conduit jump with respect to Belangr equation

3. Literature Review: Uniform FlowIn uniform flow, all flow parameters are independent of both space and time; A flow in a given channel must satisfy the following conditions to be considered as uniform flow:Bottom slope So be constant,Wall roughness must be uniformly distributed,Discharge remains constant both in time and space, Cross-section of channel must be prismatic Channel axis is straight Air pressure above surface is constant,Homogenous fluidGoverning parameters must be independent of time

3. Literature Review: Froude NumberWhere F is the dimensionless Froude numberv is the flow velocity,g is the gravitational constant, andy is the depth of the flow

3. Literature Review: Hydraulic JumpA natural flow phenomenon observed in open channel water bodies such as rivers and streams, or downstream of hydraulic structures, e.g. sluice gates and spillways. Literal jump from supercritical (Fr>1.0) to subcritical (Fr