scholarly journals Gradually Varied Flow Computation in Structured Irrigation Networks

2021 ◽  
Vol 9 ◽  
Author(s):  
S. Suresh ◽  
K. Sridharan
Keyword(s):  
Irrigation System ◽  
Flow Analysis ◽  
Flow Distribution ◽  
Successful Implementation ◽  
Analysis Model ◽  
Irrigation Network ◽  
Analysis And Design ◽  
Network Concept ◽  
Traditional Irrigation ◽  
Entire Network

In this paper an algorithm for analysis and design of a structured irrigation network and a traditional irrigation network are developed on the basis of the gradually varied flow analysis of the flow in the entire network. The model developed brings advantages of the structured irrigation network concept and also allows the user to analyses and design the flow distribution in the entire network. Model built around the gradually varied flow analysis model with a tree network is divided into a group based on network consisting of an initial value problem and also a boundary value problem with junctions as the reconciled boundaries. The essence of the model is that it can handle several types of structures such as head regulators, duckbill weirs in the main canal, an open flume, a pipe semi module, a pipe outlet with and without a sleeve, proportional distributors and tail clusters in the offtakes. These structures are very important from the standpoint of analysis and design for successful implementation of a structured irrigation network on an existing system and also for analysis and design of a traditional irrigation system consisting of many gates and other structures. The focus of this paper is the efficacy of the water management in ensuring equitable distribution of flow at different discharges released at the head works.

scholarly journals A Two Dimensional Flow Analysis Model for Designing a Nozzle-Less Volute Casing for Radial Flow Gas Turbines

1991 ◽  
Author(s):  
H. O. Owarish ◽  
M. Ilyas ◽  
F. S. Bhinder
Keyword(s):  
Gas Turbines ◽  
Control Volume ◽  
Flow Analysis ◽  
Two Dimensional ◽  
Analysis Model ◽  
Cross Sectional ◽  
Analysis And Design ◽  
Single Entry ◽  
Two Dimensional Flow ◽  
Control Volumes

This paper describes a two dimensional model for flow analysis and design of a single entry nozzle-less volute casing for inward flow radial turbines. The model takes into account the cross-sectional shape of the casing by dividing it into a number of segments which are further sub divided into control volumes. Changes in flow properties are calculated by considering the changes in momenta of fluid in the tangential and the radial directions across each control volume. The model, has been computerized using Fortran 77 for the IBM AT or 100% compatible micro computers.

A Two-Dimensional Flow Analysis Model for Designing a Nozzle-less Volute Casing for Radial Flow Gas Turbines

1992 ◽  
Vol 114 (2) ◽  
pp. 402-410 ◽  
Author(s):  
H. O. Owarish ◽  
M. Ilyas ◽  
F. S. Bhinder
Keyword(s):  
Gas Turbines ◽  
Control Volume ◽  
Flow Analysis ◽  
Two Dimensional ◽  
Analysis Model ◽  
Cross Sectional ◽  
Analysis And Design ◽  
Single Entry ◽  
Two Dimensional Flow ◽  
Control Volumes

This paper describes a two-dimensional model for flow analysis and design of a single entry nozzle-less volute casing for inward flow radial turbines. The model takes into account the cross-sectional shape of the casing by dividing it into a number of segments, which are further subdivided into control volumes. Changes in flow properties are calculated by considering the changes in momenta of fluid in the tangential and radial directions across each control volume. The model has been computerized using Fortran 77 for the IBM AT or 100 percent compatible microcomputers.

To the issue of water treatment by hydrocyclone on the systems of the combined irrigation

2020 ◽  
Vol 0 (2) ◽  
pp. 21-25
Author(s):  
Nikolay Dubenok ◽  
Andrey Novikov ◽  
Sergei Borodychev ◽  
Maria Lamskova
Keyword(s):  
Water Treatment ◽  
Organic Compounds ◽  
Irrigation Water ◽  
Irrigation System ◽  
Petroleum Products ◽  
Cylindrical Part ◽  
Agricultural Landscapes ◽  
Treatment Unit ◽  
Drain Pipe ◽  
Irrigation Network

At the stage of water treatment for irrigation systems, the efficiency capture coarse and fine mechanical impurities, as well as oil products and organic compounds affects the reliability of the equipment of the irrigation network and the safety of energy exchange processes in irrigated agricultural landscapes. The violation of work irrigation system can cause disruptions in irrigation schedules of agricultural crops, crop shortages, degradation phenomena on the soil and ecological tension. For the combined irrigation system, a water treatment unit has been developed, representing a hydrocyclone apparatus with a pipe filter in the case. For the capacity of 250 m3/h the main geometrical dimensions of hydrocyclone have been calculated. To organize the capture petroleum products and organic compounds, it has been proposed a modernization of a hydrocyclone unit, consisting in dividing the cylindrical part of the apparatus into two section. The first is section is for input irrigation water, the second one is for additional drainage of clarified irrigation water after sorption purification by the filter, placed on the disk and installed coaxially with the drain pipe and the pipe filter.

DESIGN OF AN INTERACTIVE VIRTUAL FACTORY USING CELL FORMATION METHODOLOGIES

2003 ◽  
Vol 02 (02) ◽  
pp. 229-246 ◽  
Author(s):  
T. KESAVADAS ◽  
M. ERNZER
Keyword(s):  
Virtual Environment ◽  
Clustering Algorithm ◽  
Flow Analysis ◽  
Cell Formation ◽  
Open Architecture ◽  
Successful Implementation ◽  
Design Environment ◽  
Virtual Factory ◽  
Software Modules ◽  
And Performance

This paper describes an interactive virtual environment for modeling and designing factories and shop floors. The factory building tool is developed as an open architecture in which various modules can be utilized to quickly implement factory design algorithms ranging from plant layout to factory flow analysis. Software modules and utilities have been implemented to allow easy set-up of the visual interface. In this paper, this virtual factory is used to implement cellular manufacturing (CM) system. CM has traditionally been a very complicated system to implement in practice. However successful implementation of the system has improved productivity immersely. Several issues involved in implementing CM within our virtual factory machine modeling and interface designs for defining the cells, are discussed. The mathematical clustering algorithm called Modified Boolean Method was implemented to automatically generate complex virtual environments. The virtual factory makes the process of CM-based factory design a very easy and intuitive process. Though the cell formation problem is NP-complete in 2D space, issues related to human factors and ergonomics can be better perceived in a 3D virtual environment. It also leads to further optimization with respect to maintainability and performance, and thus help get better solutions, which are not visible unless the factory is built. Our virtual factory interface also allows easy reassignment of machines and parts, subcontracting of bottleneck parts and rearranging of machines within the same design environment, making this a productive industrial tool. 3D virtual factory can also be automatically generated from the Part Machine interface called the Virtual Matrix Interface.

scholarly journals Operasional dan pemeliharaan jaringan irigasi subak di Kabupaten Tabanan

2017 ◽  
Vol 7 (1) ◽  
pp. 121
Author(s):  
Sumiyati ◽  
I Wayan Windia ◽  
I Wayan Tika
Keyword(s):  
Irrigation System ◽  
Irrigation Network ◽  
Irrigation Networks ◽  
Depth Interview ◽  
Interview Methods ◽  
Maintenance Activities

This research was conducted in order to understand the operational and maintenance of irrigation network in traditional Balinese irrigation system of subak in Tabanan regency. It spesific aim is to develop a documentation which is useful as reference about operational and maintenance of irrigation network in subak system. The sample of this research are four subak in Tabanan regency which are subak in the upstream, middle, and downstream areas, including Subak Bunyuh, Subak Sigaran, Subak Guama, and Subak Sungsang. The research was conducted by survey and depth interview methods. The operational and maintenance of irrigation networks in subak system in Tabanan regency includes matelik (monitoring channel), nyilih yeh (borrow the water), magilihan (rotation of water irigation), kempelan (maintenance of traditional weir), ngeduk nyanyad (draining mud), nabdab yeh (arrangement of water irrigation distribution), metpet munduk (lining stabilitation.), and ngampad (chanel clearing). This article concludes that all subak samples in Tabanan regency carry out operational and maintenance activities the irrigation networks in the subak system.

scholarly journals Analyzing Polyvinyl Chloride in Japan With the Waste Input−Output Material Flow Analysis Model

2009 ◽  
Vol 13 (5) ◽  
pp. 706-717 ◽  
Author(s):  
Shinichiro Nakamura ◽  
Kenichi Nakajima ◽  
Yoshie Yoshizawa ◽  
Kazuyo Matsubae-Yokoyama ◽  
Tetsuya Nagasaka
Keyword(s):  
Polyvinyl Chloride ◽  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Analysis Model

scholarly journals PENANGGANAN JARINGAN IRIGASI KRUENG BARO KABUPATEN PIDIE MELALUI ANGKA KEBUTUHAN NYATA OPERAISONAL DAN PEMELIHARAAN (AKNOP)

2019 ◽  
Vol 2 (4) ◽  
pp. 331-340
Author(s):  
Nofrizal Nofrizal ◽  
Azmeri Azmeri ◽  
Ella Mailianda
Keyword(s):  
Irrigation System ◽  
Crop Productivity ◽  
Area Network ◽  
Physical Damage ◽  
Irrigation Network ◽  
Irrigation Area ◽  
The Real ◽  
Real Cost ◽  
Operation And Maintenance ◽  
Irrigation Networks

Krueng Baro Irrigation Area is one of the irrigation areas which is focused on increasing food crop productivity in Pidie District. To support the existence of the irrigation, of course, it must be supported by a well-organized irrigation system, so an effective irrigation network management system is needed through the O M program. O M activities require a truly real value or cost figure which is the result of the search for irrigation networks known as the real operation and maintenance demand value. The physical condition of the Krueng Baro Irrigation Network if viewed from the results of the irrigation network inventory still has many obstacles that hamper the fulfillment of rice water needs, including physical damage to buildings and irrigation channels. The evaluation of irrigation network performance is the first step in the preparation of the real operation and maintenance demand value, the rate of performance of the Krueng Baro Irrigation Area network is 68.06% (BWSSI, 2017) which falls into the less category and needs attention. This study aims to identify Irrigation Network O M activities and the real operation and maintenance demand value Krueng Baro irrigation. The research method is in the form of observations / field observations and documentation to obtain the existing conditions of irrigation networks which subsequently identify O M plans and preparation of the real operation and maintenance demand value. After the preparation of the real operation and maintenance demand value was obtained the output of the value of the real cost requirement in carrying out routine operations was only 0.53% (IDR 529,180,000.00), Routine Maintenance 6.52% (IDR 6,510,464,300.00), while for Periodic Maintenance is very large, namely 92.95% (IDR. 92,764,196,192.00) compared to the overall total cost (IDR. 99,803,840,492.00). In order to achieve the full O M Plan and the real operation and maintenance demand value Krueng Baro Irrigation Network due to the limited budgetary budget so is divided into a 5-year priority program plan reference to Minister of Public Works and Housing Regulation No. 12 / PRT / M / 2015 with the first year priority carried out on the main building which greatly influences performance and function of the irrigation system such as turnover of intake doors, olak ponds and upstream weir sediment excavation and some buildings and channels that have been destroyed and not functioning on the carrier channel.

scholarly journals Analysis of Prospective Mathematics Teachers Ability in Applying Scientific Approach Based The Curriculum 2013

2019 ◽  
Author(s):  
Mohammad Tohir ◽  
A. Wida Wardani
Keyword(s):  
Mathematics Teachers ◽  
Flow Analysis ◽  
Approaches To Learning ◽  
Learning Activities ◽  
Analysis Model ◽  
Practical Examination ◽  
Curriculum Structure ◽  
Scientific Approach ◽  
Qualitative Descriptive ◽  
Prospective Mathematics Teachers

This study aims to obtained description of the ability of prospective mathematics teachers in applying scientific approaches to learning activities in the classroom. This research is a qualitative descriptive study. The participants research were prospective mathematics teacher (PPL teachers) interns at SMP Negeri 2 Jember. Data collection techniques used were questionnaires, interviews, observation, and the results of supervision at the practical examination. Data analysis techniques in this study using a checklist and flow analysis model of Miles and Huberman. The results showed that: (1) PPL teachers' understanding of the learning model through a scientific approach gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (2) the ability of PPL teachers in preparing the learning device in accordance with the curriculum structure in 2013 gained as much as 100% in the category is capable; (3) the ability of PPL teachers in implementing the learning activities using scientific approaches gained as much as 57.14% in the category is can and as much as 42.86% in the category is quite capable; (4) the ability of PPL teachers formulate and implement authentic assessment gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (5) PPL students' response to the teacher during teaching (internship) gained as much as 42.86% in the category is accordance with the characteristics of students as a teacher of mathematics and as much as 57.14% in the category is according to the characteristics of students as a teacher of mathematics. While the barriers experienced by teachers PPL is the lack of experience in implementing the scientific approach to learning, especially on the activities of questioning and reasoning, the allocation of time, and still difficulties in conducting assessments based the Curriculum 2013.

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