Analytical Gas Pipeline Design Method Using The GERG Equation of State

1996 ◽  
Author(s):  
Turhan Yildiz
Keyword(s):  
Equation Of State ◽  
Design Method ◽  
Gas Pipeline ◽  
Pipeline Design

Research on Aseismatic Measures of Gas Pipeline Crossing a Fault for Strain-Based Design

2009 ◽  
Author(s):  
Xiaoting Gu ◽  
Hong Zhang
Keyword(s):  
Design Method ◽  
Large Diameter ◽  
Strain Analysis ◽  
Gas Pipeline ◽  
Analysis Model ◽  
Buried Pipe ◽  
Size And Shape ◽  
Buried Gas Pipeline ◽  
Pipeline Design ◽  
Pipeline Crossing

There are a lot of researches on qualitative aseismatic measures for buried gas pipeline crossing movable faults. But a few of them are quantitative, especially in the size and shape of the trench. In this paper, based on strain-based pipeline design method and finite element method, a new strain analysis model for buried large diameter gas pipeline is presented that deals quantitatively with the pipeline strain influencing factors, such as the size and shape of the trench, buried pipe depth, crossing angle between pipeline and fault, pipe diameter and wall thickness, mechanical properties of original soil and back fill soil, inner pipeline pressure. In this model, the pipeline is simulated by pipe element and elbow element, soil-pipe interaction is reduced to 3 dimensional soil spring. By means of FEM software ABAQUS, detail analysis is performed for a real design case of pipeline crossing a movable fault in the second west-east gas pipeline project of China, and optimized pipeline crossing fault scheme is proposed which can minimize the pipeline strain and limit it in allowable value.

THE SOLUTION OF LARGE-SCALE GAS PIPELINE DESIGN PROBLEMS

1982 ◽  
Vol 6 (2) ◽  
pp. 77-83 ◽  
Author(s):  
F. I. SOLIMAN ◽  
B. A. MURTAGH
Keyword(s):  
Large Scale ◽  
Gas Pipeline ◽  
Design Problems ◽  
Pipeline Design

Optimization of Long Distance Natural Gas Pipeline Design Proposals Based on Multi-Objective AHM Method

2013 ◽  
Vol 756-759 ◽  
pp. 4309-4313
Author(s):  
Feng Juan Dong ◽  
Xue Fei Lu
Keyword(s):  
Natural Gas ◽  
Pressure Ratio ◽  
Gas Pipeline ◽  
New Method ◽  
Long Distance ◽  
Natural Gas Pipeline ◽  
Delivery Pressure ◽  
Design Case ◽  
Pipeline Design ◽  
Assessment Result

the new method-AHM, and nine parameters which included diameter, delivery pressure, pressure ratio of the first station, pressure ratios of intermediate stations, number of stations, investment costs of pipeline ,investment costs of stations, investment costs of operation ,equivalent cost, have been selected to evaluate design projects of the long distance natural gas pipeline. The results indicate that attribute AHM matches other methods well. The calculation result of the example indicates that AHM method can get a good assessment result for the multifactor and multi-hierarchy complicated problems. The study provides a new method and technique for designers to select the technical feasible and economic reasonable design case, which has some theoretical and practical value.

Prospects for the research on limit state design method of the natural gas pipeline

2015 ◽  
pp. 183-187
Author(s):  
Shaoxing Liu ◽  
Peng Yang ◽  
Dongran Zhao ◽  
Jinyuan Zhang ◽  
Yuqing Liu
Keyword(s):  
Natural Gas ◽  
Design Method ◽  
Limit State ◽  
Gas Pipeline ◽  
Limit State Design ◽  
Natural Gas Pipeline

A Fast and Efficient Add-Compare-Select Structure Using Hybrid Logic Asynchronous Pipeline Design

2019 ◽  
Vol 28 (14) ◽  
pp. 1950234
Author(s):  
Mansi Jhamb ◽  
Vinod Kumar Khera ◽  
Piyush Pant ◽  
Hinduja Pudi
Keyword(s):  
Communication Networks ◽  
High Performance ◽  
Forward Error Correction ◽  
Design Method ◽  
Hybrid Logic ◽  
Viterbi Decoder ◽  
Trellis Codes ◽  
Asynchronous Pipeline ◽  
Decoder Design ◽  
Pipeline Design

Convolutional or trellis codes are today widely used in digital communication networks and multimedia broadcasting systems. TheViterbi decoder is commonly used for decoding trellis codes due to its excellent forward error correction performance. High-performance and low-power Viterbi decoders are in great demand in the communication industry. Despite several significant developments in decoder design and architecture in the past decade, the issue of latency and power dissipation still remains a challenge requiring further investigation and innovation. This paper proposes arobust deep-pipelined Add-Compare-Select (ACS) Unit, based on a hybrid logic asynchronous pipeline design method. The ACS operation forms the primary deadlock on the performance of the decoder hardware. With the proposed structure, the ACS units and hence Viterbi Decoder operate at a 323.3% higher throughput with 76.4% reduced latency and 86.6% reduced power consumption, when compared with QDI based realization of the ACS unit.

Study on the Risk Based Inspection and Evaluation System for Polyethylene Gas Pipeline

2018 ◽  
Author(s):  
Zhangwei Ling ◽  
Junfang Xia ◽  
Gangyi Cai ◽  
Ping Tang ◽  
Chang Chen ◽  
...  
Keyword(s):  
Evaluation System ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Gas Pipeline ◽  
Analytic Hierarchy ◽  
Pipeline Design ◽  
The Mathematical Model ◽  
Hierarchy Process ◽  
Design Construction

The operating environment of polyethylene (PE) gas pipeline is complex and changeable. In the process of pipeline design, construction and operation, there are many fuzzy factors inducing pipeline accidents. In the paper, the fuzzy factors causing pipeline accidents were studied and analyzed, and the risk evaluation factors of PE gas pipeline were determined. According to the theory of fuzzy comprehensive evaluation, the mathematical model of fuzzy comprehensive evaluation for PE pipeline was established. In order to pursue as much accurate results of assessment as possible, the fuzzy analytic hierarchy process was used to determine the weight of each index. The safety evaluation grade of the pipeline was given by using the risk matrix method. And then the evaluation system software of PE gas pipeline risk assessment was developed. The software has been used in the risk inspection of PE gas pipeline, which provides the basis for the risk management of the pipeline.

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