1. HYDRAULICS_1 Design of Irrigation Systems by László Ormos

2. Hydraulics Application of Continuity As flow is steady: where and v1 v2 A2A2 A1A1

3. Hydraulics Flow rate v max D r _v_v v(r) dr r R

4. Bernoulli’s Law where the relative elevation of the water; the pressure head of the water; the water velocity head.

5. Water Flow in Pipes What is the water flow speed? Assuming that the water flow rate in a pipe having 200mm diameter, is 100 m 3 /hrs. 1.The water flow rate is converted from meter to centimeter units. 2.Cross section area of the pipe is the following: 3.The water flow speed is as follows:

6. Water Flow in Pipes What is the diameter of pipe if the water flow rate is 360m 3 /h and the water flow speed is 1 m/sec? 1.The water flow rate is converted from meter to cm unit: 2.The water flow speed is converted from meter to cm unit:

7. Water Flow in Pipes 3.The pipe cross section area is as follows: 4.The internal diameter of pipe is:

8. Water Flow in Pipes If the water flow velocity in a 200 mm diameter pipe is 88.5 cm/sec, then 1.What is the water flow rate? 2.What will be the flow velocity, if the diameter of pipe is reduced by half? 1.The cross section area of the two pipes is

9. Water Flow in Pipes 2.The water flow rate is as follows: 3.The result changed to m 3 /hr is:

10. Water Flow in Pipes 4.The water flow velocity in the 100mm diameter pipe is as follows: or

11. Water Flow in Pipes A 200mm pipe was installed from A to C, and a 50mm pipe was hooked up in between (B). What is the water flow rate and velocity out of B if the water flow velocity between A to B is 1.5 m/sec and from B to C is 0.9 m/sec? v D=200mm D=50mm AC B

12. Water Flow in Pipes 1.The cross section area of the 200mm pipe is 2.The cross section area of the 50mm pipe is 3.The water flow rates between A to B and B to C are as follows: A to B: B to C:

13. Water Flow in Pipes 4.The water flow rate out of B is as follows: 5.The water flow velocity out of B is as follows:

14. References Azenkot, A.(1998):”Design Irrigation System”. Ministry of Agricul- ture Extension Service (Irrigation Field service), MASHAV Israel Dr. Avidan, A.(1995):”Soil-Water-Plant Relationship”. Ministry of Agriculture Extension Service (Irrigation Field service), CINADCO, Ministry of Foreign Affairs, MASHAV, Israel Sapir, E.-Dr. E. Yagev (1995):”Drip Irrigation”. Ministry of Agricul- ture and Rural Development, CINADCO, Ministry of Foreign Affairs, MASHAV, Israel Sapir, E.-Dr. E. Yagev (2001):”Sprinkler Irrigation”. Ministry of - culture and Rural Development, CINADCO,Ministry of Foreign Affairs, MASHAV, Israel Eng. Nathan, R. (2002):”Fertilization Combined with Irrigation (Fertigation)”. Ministry of Agriculture and Rural Development, CINADCO,Ministry of Foreign Affairs, MASHAV, Israel