Reservoir regulation, Flood routing- Graphical or I.S.D method, Trial and error method, Reservoir losses, Reservoir sedimentation- Phenomenon, Measures to control reservoir sedimentation, Density currents Significance of trap efficiency, Useful life of the reservoir, Costs of the reservoir, Apportionment of total cost, Use of facilities method, Equal apportionment method, Alternative justifiable expenditure method.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Introduction, Term related to reservoir planning (Yield, Reservoir planning and operation curves, Reservoir storage, Reservoir clearance), Investigation for reservoir planning, Significance of mass curve and demand curves, Applications of mass-curve and demand curves, Fixation of reservoir capacity from annual inflow and outflow, Fixation of reservoir capacity.
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
Reservoir Planning: Introduction; Investigations for reservoir planning; Selection of site for a reservoir; Zones of storage in a reservoir; Storage capacity and yield; Mass inflow curve and demand curve; Calculation of reservoir capacity for a specified yield from the mass inflow curve; Determination of safe yield from a reservoir of a given capacity; Sediment flow in streams; Life of reservoir; Reservoir sediment control; flood routing. Various types of Spillways and design.
Introduction, Term related to reservoir planning (Yield, Reservoir planning and operation curves, Reservoir storage, Reservoir clearance), Investigation for reservoir planning, Significance of mass curve and demand curves, Applications of mass-curve and demand curves, Fixation of reservoir capacity from annual inflow and outflow, Fixation of reservoir capacity.
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
The presentation has prepared as per the syllabus of Mumbai University.
Go through the presentation, if you like it then share it with your friends and classmates.
Thank you :)
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Any hydraulic structure which supplies water to the off taking canal known as headwork. Storage head work is that stores water when it is available and supplies when needed.
Types- selection of the suitable site for the diversion headwork components
of diversion headwork- Causes of failure of structure on pervious foundation- Khosla’s theory- Design of concrete sloping
glacis weir.
The presentation has prepared as per the syllabus of Mumbai University.
Go through the presentation, if you like it then share it with your friends and classmates.
Thank you :)
Topics:
1. Reservoir Classification
2. Investigations
3. Selection of Site for Reservoir
4. Zones of Storage
5. Storage Capacity and Yield
6. Mass Inflow Curve & Demand Curve
7. Calculation of Reservoir Capacity
8. Reservoir Sedimentations
9. Life of Reservoir
10. Selection of Dam
Any hydraulic structure which supplies water to the off taking canal known as headwork. Storage head work is that stores water when it is available and supplies when needed.
Types- selection of the suitable site for the diversion headwork components
of diversion headwork- Causes of failure of structure on pervious foundation- Khosla’s theory- Design of concrete sloping
glacis weir.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
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Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Event Management System Vb Net Project Report.pdfKamal Acharya
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This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
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CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
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It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
3. Silting of reservoirs means the deposition of silt and clay. This mainly occurs
when runoff occurs. Runoff contain smaller soil particles such as silt, clay, fine
sand which may deposited at the bed of reservoir, which reduces the storage
capacity of reservoir.
When these particles reaches into reservoir tries to settle down due to action of
gravity, coarser one settle down while fine remain suspension therefore it is
very essential to check silting of dam and water stored in reservoir.
Sediment transported by the river can be divided into two heads:
The Suspended Load is kept in suspension because of the vertical component
of the eddies formed due friction of flowing water against bed.
The Bed Load is dragged along the bed of the stream and is about 10 to 15%
of suspended load.
3
INTRODUCTION
6. Measurement of Sediments from Reservoir
6
Measurement of Sediment by sampling method:
i. Collect water sample from various depths of reservoir in bottles.
ii. Then filtered sample and measure dried silt in the units of ‘ppm’
Sediment load in ppm = (Weight of dry sediment / weight of sediment
and water sample ) × 10^6
The reservoir sedimentation is measured in terms of its “Trap
Efficiency” (η).
7. Reservoir Trap Efficiency Curve
7
The trap
efficiency of
a reservoir is the
percentage of
incoming
sediment which
is trapped by
the reservoir.
8. Density Current
8
It is defined as a gravity flow of one fluid under another fluid
having a slightly different density.
The density current will separate from the sloping bed and
form an intrusion or interflow.
Rate of sedimentation
The normal recommended rate of sediment or silt is about
200 to 500 m3/sec per year per square km area.
9. Sedimentation of Reservoirs
The following points need careful consideration as regards
design of reservoir and dam.
Assessment of deposition of the silt in the reservoir.
Determination of the life of reservoir.
The sediment concentration varies over 200 gram per litre to
1600 gram per litre.
The yearly loss of storage due to sedimentation in reservoir.
9
11. Selection of site for Dam
Topography of Catchment
Geology and foundation conditions
Size of Reservoir and CatchmentArea
Availability of Construction materials
Spillway size and location
Length and Height of Dam
Life of Dam 11
14. Selection of site for Dam
If sand, gravel and crushed stone is available, a concrete gravity
dam is preferred.
If coarse and fine grained soils are available, an earth dam
is suitable.
If foundation consists of sound rock with no fault and fissures, any
type of can be constructed.
Rocks like Granite, Gneiss and Schist are suitable for Gravity
Dams.
Poor rock or gravel foundations are suitable for Earth dams and
Rock fill dams.
Earth dam with a separate spillways are suitable for low rolling
plains. 14
15. Selection of site for Dam
An Arch dam is suitable for a low narrow V-shaped valley.
If large discharge is required, concrete gravity dam is preferable.
If no other site is available for spillway, earth dam with central
overflow section of concrete.
Concrete or masonry gravity dams have very long life.
Earth and Rockfill dams have intermediate life.
If the length of dam is small but height is more, gravity dam is
preferred.
If a roadway is to be passed over top of the dam, an earth or
gravity dam is preferred.
15
16. Economic Height of A dam
The economic height of the dam is that one for which the cost of
the dam per unit volume of water stored is minimum.
The procedure adopted for determining the economic height is the
elevation storage curve.
16
17. Reservoir Losses
Following seven major causes of losses of water from reservoir:
i) Infiltration
ii) Seepage
iii) Evaporation from water surface
iv) Watershed leakage
v) Interception
vi) Transpiration
vii) Soil evaporation
17
18. Spillways
Passages constructed either within a dam or in the periphery
of the reservoir to safely pass the excess of the river during
flood flows are called Spillways.
The capacity of a spillway is seen to depend upon the following
major factors:
The inflow flood
The volume of storage provided by the reservoir
Crest height of the spillway
Gated or ungated
18
19. Free Over-fall Spillway
• In this type of spillway, the water
freely drops down from the crest,
as for an arch dam.
• It can
decked
vertical
also be providedfor a
over flow dam with a
or adverse inclined
downstream face.
19
20. Overflow Spillway: The overflow type spillway has a crest
shaped in the form of an ogee or S-shape. The upper curve of the ogee is made to
conform closely to the profile of the lower nappe of a ventilated sheet of water falling
from a sharp crested weir.
20
21. Chute Spillway:
It is one whose discharge
is conveyed from the
reservoir to
the downstream
level through an
channel, placed
river
open
either
along a dam abutment or
through a saddle.
21
22. Side channel Spillway:
A side channel spillway is one in which the control weir is placed
approximately parallel to the upper portion of the discharge channel.
22
23. Shaft Spillway:
A Shaft Spillway is one where water enters over a horizontally positioned lip, drops
through a vertical or sloping shaft, and then flows to the downstream river channel
through a horizontal or nearly horizontal conduit or tunnel.
23
24. Tunnel Spillway:
• Where a closed channel is used
to convey the discharge around
a dam through the adjoining
hill sides, the spillway is often
called a tunnel or conduit
spillway.
• The closed channel may take
the form of a vertical or
inclined shaft, a horizontal
tunnel through earth or rock, or
a conduit constructed in open
cut and backfilled with
Earth materials.
24
25. Siphon Spillway:
A siphon spillway is a closed
conduit system formed in the shape
of an inverted U, positioned so that
the inside of the bend of the upper
passageway is at normal reservoir
storage level.
• Siphon spillways comprise usually
of five components, which include
an inlet, an upper leg, a throat or
control section, a lower leg and an
outlet.
25
26. Flood Routing
• Procedure to determine the
flow hydrograph at a point on
a watershed from a known
hydrograph upstream
• As the hydrograph travels, it
• Attenuates
• Gets delayed
Q
t
Q
t
Q
t
Q
t
26
27. Why to route flows?
t
Account for changes in flow hydrograph as a flood wave passes
downstream.
This helps to:
Calculate storages
Studying the attenuation of flood peaks
Q
27
28. Method of flood routing
It is the process of calculating water levels in reservoir, the storage
quantities and outflow rates corresponding to a particular inflow
hydrograph at various instants.
Flood routing is carried out in a reservoir to determine what will be
maximum rise in its water surface and what will be the discharge in the
downstream channel when particular flood passes through it.
Some of the important methods which have a more practical bearing are:
1. Calculus method or mathematical method
2. Step by Step Method or Trial and Error Method
3. ISD (inflow storage discharge)
4. HM Cheng’s Method
5. Woodward Method 28
30. Inflow Storage Discharge method
• The inflow storage discharge method was first developed by L.G
puls of U.S army corps of engineers. According to this method
• In the above equation all the quantities on left hand side
are known and hence the quantity is determined.
30
32. • From this quantity the value of Q2 can be found out from
the storage-discharge relationship as explained below.
•From the available storage discharge curve, the curves of
(S-Q/2 ∆T) verses Q and (S+Q/2 ∆T) verses Q are
developed.
•Such curves are called routing curves.
•From the known value of Q1, the value of (S1-
Q1/2∆T) is read from Q verses (S-Q/2 ∆T) curve.
32
33. • This value is added to (I1+I2/2)∆t to give
(S2+Q2/2∆T).
• Entering the graph with this value of (S2+Q2/2 ∆T)
, the value of Q2 is read out from Q verses
(S+Q/2∆t) curve.
•The value of Q2 thus determined becomes Q1 for
the next time interval.
33
35. • If the inflow and outflow hydrographs are now plotted on the
same time scale, it will be observed that the peak flow of
outflow hydrograph is less than the peak flow of the inflow
hydrograph.
• Similarly, the time to peak in the outflow hydrograph is more
than the time to peak in the inflow hydrograph.
• These are the effects of reservoir storage on the movement of
flood wave through the reservoir.
• The reduction of peak is known as the attenuation and the
difference in times to peak is known as the reservoir lag.
35