Method for quantifying computed result non-determinacy interval of water supply pipe network model

A technology of uncertainty and model calculation, applied in the direction of calculation, special data processing applications, instruments, etc., can solve problems such as large amount of calculation

Active Publication Date: 2013-03-13
SHANGHAI MUNICIPAL WATER RESOURCES DEV & UTILIZATION NAT ENG CENT
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason why uncertainty analysis is important is that the model describing the characteristics of the pipe network system cannot be unique. The results of uncertain hydraulic simulation are the probability distribution of node water pressure an

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quantifying computed result non-determinacy interval of water supply pipe network model
  • Method for quantifying computed result non-determinacy interval of water supply pipe network model
  • Method for quantifying computed result non-determinacy interval of water supply pipe network model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0047] As a preferred embodiment, assume that the simple system is a dual water source system, nodes 1 and 7 are water source nodes, the flow entering the pipe network from node 1 is 10 l / s, the flow entering the pipe network from node 7 is 20 l / s, and node 3 , 4, 5, 8 flow are 7l / s, 5l / s, 5l / s, 13l / s respectively, nodes 2 and 6 are transfer nodes, node flow is zero. The pressure at node 1 is known and the head is 20m.

[0048] Step 1: Collect data on the pressure nodes of the water supply network, and collect the pressure of each node in the water supply area and the flow of the pipe section. Various methods can be adopted for collection, and various systems can be used, such as SCADA system or GIS system, which can be understood by those skille...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the field of non-determinacy analysis of a water supply pipe network model, in particular to a method for quantifying the computed result non-determinacy interval of a water supply pipe network model. The method comprises the following steps of: acquiring the pressure of each node and the pipe section flow in a water supply region; analyzing a potential data non-determinacy interval according to a system error and an accidental error; establishing a pipe network micro-model system communicated with a pipe network system; resolving a linear model; determining the non-determinacy interval of a simulated result by adopting random sampling simulation; quantifying the non-determinacy interval of the simulated result; and counting the probability density distribution of a result interval. The method has the beneficial effects that: resolving pipe network model linearization and linearized solution method for model by analyzing the non-determinacy intervals of measured data and model parameters, the non-determinacy interval of the simulated result is determined by adopting random sampling simulation, and a novel thought is provided for model accuracy estimation.

Description

technical field [0001] The invention relates to the field of uncertainty analysis of a microscopic model of a water supply pipe network system, in particular to a quantification method for the uncertainty interval of a calculation result of a water supply pipe network model. Background technique [0002] With the improvement of industrial production capacity, the scale of urban water supply system is constantly expanding, and the complexity of water supply network is also increasing. [0003] Computer simulation of water supply network system is an important basis for network planning, design and operation. A large number of mathematical models in engineering use deterministic methods to describe system behavior. Real-life problems are accompanied by uncertainty in some way. The uncertainty in the pipeline network modeling process may come from the process of parameter measurement and parameter estimation. The contradiction between mathematical certainty and natural uncert...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
Inventor 舒诗湖郑小明张东黄怡
Owner SHANGHAI MUNICIPAL WATER RESOURCES DEV & UTILIZATION NAT ENG CENT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap