This document discusses groundwater, including:
- Groundwater is water found beneath the Earth's surface, filling spaces in rock and sediment. It is a major source of water supply.
- Groundwater originates from precipitation that infiltrates underground. It moves through the hydrologic cycle and is stored in aquifers.
- Aquifers are permeable rock formations that can supply significant water to wells and springs. Properties like porosity and permeability determine how much water rock can hold and transmit.
A pumping test is a field experiment in which a well is pumped at a controlled rate and water-level response (drawdown) is measured in one or more surrounding observation wells and optionally in the pumped well (control well) itself; response data from pumping tests are used to estimate the hydraulic properties of aquifers, evaluate well performance and identify aquifer boundaries.
A pumping test is a field experiment in which a well is pumped at a controlled rate and water-level response (drawdown) is measured in one or more surrounding observation wells and optionally in the pumped well (control well) itself; response data from pumping tests are used to estimate the hydraulic properties of aquifers, evaluate well performance and identify aquifer boundaries.
1. Ground Water Occurrence
2. Types of Aquifers
3. Aquifer Parameters
4. Darcy’s Law
5. Measurement of Coefficient of Permeability of Soil
6. Types of Wells
7. Well Construction
8. Well Development
Groundwater province is an area or region in which geology and climate combine to produce groundwater conditions consistent enough to permit useful generalisations.
1. Ground Water Occurrence
2. Types of Aquifers
3. Aquifer Parameters
4. Darcy’s Law
5. Measurement of Coefficient of Permeability of Soil
6. Types of Wells
7. Well Construction
8. Well Development
Groundwater province is an area or region in which geology and climate combine to produce groundwater conditions consistent enough to permit useful generalisations.
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This is a presentation of economics assignments done on some manufacturing companies using different statistical tools such as WEKA, SPSS, SAS, COMFOR III etc.,
It includes the definition, properties, classification of groundwater with appropriate examples and figures in details. It also deals about the formation of groundwater. The properties of aquifers (all of 7) are described here in details with figures and mathematical terms.
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The presentation includes the following subtopics:
*FLUID STORAGE AND MOBILITY: POROSITY AND PERMEABILITY
* FLUID STORAGE AND MOBILITY: POROSITY AND PERMEABILITY
*SUBSURFACE WATERS
*AQUIFER GEOMETRY AND GROUNDWATER FLOW
*DARCY’S LAW AND GROUNDWATER FLOW
*CONSEQUENCES OF GROUNDWATER WITHDRAWAL
*OTHER IMPACTS OF URBANIZATION ON GROUNDWATER SYSTEMS
*OTHER FEATURES INVOLVING SUBSURFACE WATER
*WATER QUALITY
*EXTENDING THE WATER SUPPLY
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In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
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Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
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!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
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/
2. Ground Water
• Ground water: the water that lies beneath the
ground surface, filling the pore space between
grains in bodies of sediment and clastic (broken
pieces of older rock) sedimentary rock, and filling
cracks and crevices in all types of rock
• Ground water is an important source of water
supply throughout the world, its use in irrigation,
industries, municipalities and houses continues to
increase
• Source of ground water is rain and snow that falls
to the ground a portion of which percolates down
into the ground to become ground water
4. Cont..
• Water evaporates from the oceans and land
surfaces to become water vapor that is carried
over the earth by atmospheric circulation. The
water vapor condenses and precipitates on
the land and oceans. The precipitated water
may become overland flow, infiltrate into the
ground, flow through the soil as subsurface
flow, or discharge as surface runoff
5. Rock properties affecting ground water
Aquifers
• An aquifer may be defined as a formation that contains
sufficient saturated permeable material to yield significant
quantities of water to wells and springs. Aquifers are
generally aerially extensive and may be overlain or underlain
by a confining bed.
• Simply an aquifer is a body of permeable rock which can
contain or transmit groundwater
• good aquifers include sandstone, conglomerate, well-joined
limestone, bodies of sand and gravel, and some fragmental or
fractured volcanic rocks such as columnar basalt
6.
7. Types of confining beds
1. Aquiclude: A saturated but relatively
impermeable material that does not yield
appreciable quantities of water to wells; clay
is an example.
2. Aquifuge : A relatively impermeable
formation neither containing nor transmitting
water; solid granite belongs in this category.
8. Cont..
3. Aquitard : A saturated but poorly permeable
stratum that impedes (retard) groundwater
movement and does not yield water freely to
wells, that may transmit appreciable water to
or from adjacent aquifers and, where
sufficiently thick, may constitute an important
groundwater storage zone; sandy clay is an
example
9.
10.
11. Porosity and Permeability
• Porosity - the percentage of rock or sediment that
consists of voids or openings
– Measurement of a rock’s ability to hold water
– Loose sand has ~30-50% porosity
– Compacted sandstone may have only 10-20% porosity
• Permeability - the capacity of a rock to transmit fluid
through pores and fractures
– Interconnectedness of pore spaces
– Most sandstones and conglomerates are porous and permeable
– Granites, schists, unfractured limestones are impermeable
12.
13. Porosity and Permeability
• Well-sorted sedimentary deposit having
high porosity.
• Poorly sorted sedimentary deposit having
low porosity.
14. Porosity and Permeability
• Well-sorted sedimentary deposit consisting
of pebbles that are themselves porous, so
that the deposit as a whole has a very high
porosity.
15. Porosity and Permeability
• Well-sorted sedimentary deposit whose
porosity has been diminished by the
deposition of mineral matter in the
interstices.
17. The Water Table
• saturated zone: the subsurface zone in which all
rock openings are filled with water
• water table: the upper surface of the zone of
saturation
• vadose zone: a subsurface zone in which rock
openings are generally unsaturated and filled
partly with air and partly with water; above the
saturated zone
• capillary fringe: a transition zone with higher
moisture content at the base of the vadose zone
just above the water table
19. The Water Table
• perched water table: the top of a body of
ground water separated from the main
water table beneath it by a zone that is not
saturated
20. Ground Water Movement
• most ground water moves relatively slowly
through rock underground
• because it moves in response to differences
in water pressure and elevation, water
within the upper part of the saturated zone
tends to move downward following the
slope of the water table
Movement of ground water beneath a sloping water table in uniformly permeable
rock. Near the surface the ground water tends to flow parallel to the sloping water
table
21. • Movement of ground water
through pores and fractures is
relatively slow (cms to
meters/day) compared to flow
of water in surface streams
– Flow velocities in cavernous limestones can be
much higher (kms/day)
• Flow velocity depends upon:
– Slope of the water table
– Permeability of the rock or sediment
Ground Water Movement
22. Darcy’s Law
dx
dh
AkQ t
v
Darcy’s Law defines groundwater flow:
where:
Q is discharge (L3 T-1)
kv is the hydraulic conductivity (L T-1)
A is area of flow (L2), and
dht/dx is the gradient of pressure, or head