- A flow net is a set of flow lines and equipotential lines used to analyze groundwater flow through soils or other porous media.
- Flow lines represent the path that water particles travel through the medium, while equipotential lines connect points of equal hydraulic head.
- The flow net is constructed through trial and error by drawing the lines so they intersect at right angles and form approximately square or rectangular flow elements.
- The flow net is based on Laplace's equation, which describes steady fluid flow through a porous medium and states that the head change across any closed surface is zero.
Topics:
1. Causes of Failures of Weirs on Permeable Foundations
2. Bligh’s Creep Theory
3. Lane’s Weighted Creep Theory
4. Khosla’s Theory
5. Application of Correction Factors
6. Launching Apron
Topics:
1. Causes of Failures of Weirs on Permeable Foundations
2. Bligh’s Creep Theory
3. Lane’s Weighted Creep Theory
4. Khosla’s Theory
5. Application of Correction Factors
6. Launching Apron
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.
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
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.
Canal fall- necessity and location- types of falls- Cross regulator and
distributory head regulator- their functions, Silt control devices, Canal
escapes- types of escapes.
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.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
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.
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/
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.
• 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.
Technical Specifications
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.
Final project report on grocery store management system..pdfKamal Acharya
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.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
2. Flow net:
definition:A set of flow lines and equipotential lines is called a
flow net.
a flow line is a line along which
a water particle will travel.
3. An equipotential line is a line joining the points that show the
same piezometric elevation.
The flow lines and the equipotential lines are drawn by trial and
error.
It must be remembered that the flow lines intersect the
equipotential lines at right angles.
The flow and equipotential lines are usually drawn in such a way
that the flow elements are approximately squares. that need not
always be the case.
4. Flow net is a time-consuming process because trail and error.
Once a satisfactory flow net has been drawn, it can be traced
out.
Laplace equation:
In many practical cases, the nature of the flow of water through
soil is such that the velocity and gradient vary throughout the
medium.
5. The concept of the flow net is based on Laplace’s equation of
continuity.
which describes the steady flow condition.
To derive the equation of continuity of flow, consider an
elementary soil prism at point “A”.
The flows entering the soil prism in the x, y, and z directions can
be given from Darcy’s law as
qx = kxixAx = kx
𝜕ℎ
𝜕𝑥
dy dz
6. qy = kyiyAy = ky
𝜕ℎ
𝜕𝑦
dx dz
qz = kzizAz = kz
𝜕ℎ
𝜕𝑧
dx dy
qx qy qz = flow entering in directions x, y, and z, respectively
kx ky kz = coefficients of permeability in directions x, y, and z,
respectively h = hydraulic head at point A
The respective flows leaving the prism in
the x, y, and z directions are
8. For steady flow through an incompressible medium, the flow
entering the elementary prism is equal to the flow leaving the
elementary prism.
qx +qy +qz = (qx +dqx)+(qy +dqy)+(qz +dqz)
We can solve above equation we get
kx
𝜕2
ℎ
𝜕𝑥2 + ky
𝜕2
ℎ
𝜕𝑦2+ kz
𝜕2
ℎ
𝜕𝑧2=0
9. For two dimensional
kx
𝜕2
ℎ
𝜕𝑥2 + ky
𝜕2
ℎ
𝜕𝑦2=0
If the soil is isotropic with respect to permeability, kx = kz = k, and
the continuity equation simplifies
𝜕2
ℎ
𝜕𝑥2 +
𝜕2
ℎ
𝜕𝑦2=0
kx
𝜕2
ℎ
𝜕𝑥2 + ky
𝜕2
ℎ
𝜕𝑦2=0
This is generally referred as Laplace equation
10. Flow nets in anisotropic material:
Let us now consider the case of constructing flow nets for
seepage through soils that show anisotropy with respect to
permeability.
For two-dimensional flow problems,
kx
𝜕2
ℎ
𝜕𝑥2 + ky
𝜕2
ℎ
𝜕𝑧2=0
kx
𝜕2
ℎ
𝜕𝑥2 + ky
𝜕2
ℎ
𝜕𝑧2=0
𝜕2
ℎ
(kz/kx)𝜕𝑥2
+
𝜕2
ℎ
𝜕𝑧2=0
12. steps for construction of a flow
net in an anisotropic medium:
1. To plot the section of the hydraulic structure, adopt a vertical
scale.
2. Determine
𝐾𝑧
𝑘𝑥
3. Adopt a horizontal scale such that (scalehorizontal )=
𝐾𝑧
𝑘𝑥
(scalevertical).
4. With the scales adopted in steps 1 and 3, plot the cross-section
of the structure.
13. 5. Draw the flow net for the transformed section plotted in step 4 in
the same manner as is done for seepage through isotropic soils.
6. Calculate the rate of seepage as q = 𝑘𝑥𝑘𝑧 ℎ
𝑁𝑓
𝑁𝑑
Construction of flow nets for
nonhomogeneous subsoils:
Homogeneous condition rarely occurs in a nature. In most cases,
we encounter stratified soil deposits.
When a flow net is constructed across the boundary of two soils
with different permeabilities, the flow net deflects at the boundary.
This is called a transfer condition.
14. Figure 5.33 shows a general condition where a flow channel
crosses the boundary of two soils.
Soil layers 1 and 2 have permeabilities of k1 and k2,
respectively.
The dashed lines drawn across the flow channel are the
equipotential lines.
Let Δh be the loss of hydraulic
head between two consecutive
equipotential lines..
Considering a unit length
perpendicular to the section
shown.
16. where 𝑙1 and 𝑏1 are the length and width of the flow elements in soil
layer 1 and 𝑙2 and 𝑏2 are the length and width of the flow elements
in soil layer 2.
Referring again to Figure 5.33,
𝑙1 = AB sin 𝜃1 = AB cos𝛼1
𝑙2 = AB sin 𝜃2 = AB cos𝛼2
b1 = AC cos 𝜃1 = AC sin𝛼1
b2 = AC cos 𝜃2 = AC sin𝛼2
b1
𝑙1
=
cos 𝜃1
sin𝜃1
=
sin𝛼1
cos𝛼1
17. b1
𝑙1
=
1
𝑡𝑎𝑛𝜃1
= tan 𝛼1 (3)
Also,
b2
𝑙2
=
cos 𝜃2
sin𝜃2
=
sin𝛼2
cos𝛼2
b2
𝑙2
=
1
𝑡𝑎𝑛𝜃2
= tan 𝛼2
(4)
Equation(2) and (3) in equation (1)
𝑘1
𝑘2
=
𝑡𝑎𝑛𝜃1
𝑡𝑎𝑛𝜃2
=
tan 𝛼2
tan 𝛼1
(5)
18. It is useful to keep the following points in mind while constructing
the flow nets:
1. If k1 > k2, we may plot square flow elements in layer 1. This
means that 𝑙1 = 𝑏1 in equation (1) thenSo 𝑘1/𝑘2 = 𝑏2/𝑙2
• Thus, the flow elements in layer 2 will be rectangles and their
width-to-length ratios will be equal to k1/k2.
2. If k1 < k2, we may plot square flow elements in layer 1. This
means that 𝑙1 = 𝑏1 in equation (1) thenSo 𝑘1/𝑘2 = 𝑏2/𝑙2Thus,
the flow elements in layer 2 will be rectangles.