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Diffusion in flexible pipes

Abstract

This report describes the work done on modelling and simulation of the complex diffusion of gas through the wall of a flexible pipe. The diffusion and thus the pressure in annulus depends strongly on the diffusion and solubility parameters of the gas-polymer system and on the degree of blocking of the outer surface of the inner liner due to pressure reinforcements. The report evaluates the basis modelling required to describe the complex geometries and flow patterns. Qualitatively results of temperature and concentration profiles are shown in the report. For the program to serve any modelling purpose in 'real life' the results need to be validated and possibly the model needs corrections. Hopefully, a full-scale test of a flexible pipe will provide the required temperatures and pressures in annulus to validate the models. (EHS)
Publication Date:
Jun 01, 2000
Product Type:
Technical Report
Report Number:
NEI-DK-3991
Resource Relation:
Other Information: EFP-2000; EFP-99; PBD: Jun 2000
Subject:
02 PETROLEUM; PIPES; GASEOUS DIFFUSION; PETROLEUM; PERMEABILITY; GAS FLOW; POLYMERS; ONE-DIMENSIONAL CALCULATIONS; TWO-DIMENSIONAL CALCULATIONS
OSTI ID:
20254264
Research Organizations:
Danmarks Tekniske Univ., Lyngby (Denmark). Inst. for Kemiteknik
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: Contract ENS-1313/99-0014; ENS-1313/00-0031; TRN: DK0201214
Availability:
Available to ETDE participating countries only(see www.etde.org); commercial reproduction prohibited; OSTI as DE20254264
Submitting Site:
DK
Size:
102 pages
Announcement Date:

Citation Formats

Brogaard Kristensen, S. Diffusion in flexible pipes. Denmark: N. p., 2000. Web.
Brogaard Kristensen, S. Diffusion in flexible pipes. Denmark.
Brogaard Kristensen, S. 2000. "Diffusion in flexible pipes." Denmark.
@misc{etde_20254264,
title = {Diffusion in flexible pipes}
author = {Brogaard Kristensen, S}
abstractNote = {This report describes the work done on modelling and simulation of the complex diffusion of gas through the wall of a flexible pipe. The diffusion and thus the pressure in annulus depends strongly on the diffusion and solubility parameters of the gas-polymer system and on the degree of blocking of the outer surface of the inner liner due to pressure reinforcements. The report evaluates the basis modelling required to describe the complex geometries and flow patterns. Qualitatively results of temperature and concentration profiles are shown in the report. For the program to serve any modelling purpose in 'real life' the results need to be validated and possibly the model needs corrections. Hopefully, a full-scale test of a flexible pipe will provide the required temperatures and pressures in annulus to validate the models. (EHS)}
place = {Denmark}
year = {2000}
month = {Jun}
}