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# Cu06997 the basics_26052013

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### Cu06997 the basics_26052013

1. 1. Course CU06997 Fluid DynamicsThe 13 situations you are able tocalculate at the end of this course1
2. 2. WaterStagnantnot flowingu = 0 m/sIn motionflowingu > 0 m/sHydrostatics Fluid dynamicsPipes Open channel[Gesloten leidingen] [Open water]1
3. 3. Classification of flows.1. Steady uniform flow [Eenparig uniform]example: pipe with constant D and Qexample: channel with constant A and Q2. Steady non-uniform flowexample: pipe with different D and constant Qexample: channel with different A and constant Q3. Unsteady uniform flow[Niet eenparig , uni..]example: pipe with constant D and different Qexample: channel with constant A and different Q4. Unsteady non-uniform flowexample: pipe with different D and Qexample; channel with different A and Q1
4. 4. Basics π = π’ β π΄ PAR ο½212222211122ο­οο«ο«ο«ο½ο«ο« Hguzyguzyu1Reference /datum [m] [Referentie]Surface level [m] [Waterstand]Total head H [m] [Energiehoogte]P1z1y1u12/2g Velocity head [m] [Snelheidshoogte]y = Pressure head [m] [drukhoogte]z = Potential head [m] [plaatshoogte]1
5. 5. Turbulent or laminar flow[Turbulente of laminaire stroming]ππ =π. 4ππSubcritical or Supercritical flow[Stromend of Schietend water]π¦π =π2π β π΅23ππ = π β π¦π2πΉπ =πππ1
6. 6. DownstreamUpstreamCross-section CulvertHeadLossLength CulvertVelocity1. Discharge culvert [Debiet duiker]2. Dimensions culvert[Afmetingen duiker]2
7. 7. DownstreamUpstreamCross-section CulvertHeadLossLength CulvertVelocityCulvert,submerged [Duiker,volledig gevuld]211ο·ο·οΈοΆο§ο§ο¨ο¦ο­ο½ο­οΈi1ο½oοΈRLf4οο½ ο¬οΈ[m]2gu)ΞΎΞΎΞΎ(ΞΞ2culvertoficulvert οο«ο«ο½2
8. 8. DownstreamUpstreamCross-sectionLength CulvertFlow velocity3. Discharge partly submerged Culvert[Debiet gedeeltelijk gevulde duiker]2
9. 9. DownstreamUpstreamCross-sectionLength CulvertFlow velocityCulvert, partly filled[Duiker, gedeeltelijk gevuld]Is a broad crested weir[Is een lange overlaat]2
10. 10. Free flow broad crested weir[Volkomen lange overlaat]23HBcq vv οοο½Total Head or Energy line HFree flow broad crested weirSuper critical flowHydraulic Jump2
11. 11. Submerged broad crested weir flow[Onvolkomen lange overlaat])(2 33 hHghBcq olv ο­οοοοο½Total Head or Energy line HSubmerged broad crested weirBottom eddy2
12. 12. Bed SlopeDepthHeadLossCross-sectionProfile4. Discharge open channel5. Dimensions open channel6. Equilibrium depth open channel3
13. 13. Bed SlopeDepthHeadLossCross-sectionProfileOpen channel, bed slope > 0[Open watergang, bodemverhang > 0]π =π23 β π π12ππ = πΆ β π β π ππ π = πππ¦π =π2π2 β πΆ2 β π π33