ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Considering the influence of phase change and temperature variation on the physical andmechanical properties of low-temperature rock in cold regions, the mathematical model for theThermo-Hydro(TH) coupled problem is proposed based on the theory of convective heat transferfor porous medium. In this model, the influence of moisture migration on heat conduction in rock istaken into account, as well as the influence of temperature gradient on the seepage. The involvedparameters are determined according to the related equations given in this paper. Then the finiteelement model of a gas transmission pipeline in cold region is established using the proposedmathematical model. By selecting suitable boundary conditions, initial conditions and heatcomputation parameters, the freezing problem of low-temperature rock surrounding the pipeline isanalyzed. The calculated values of the temperature field and the measured data are basicallyconsistent, which indicates that the proposed TH coupling model for rock in cold regions isreasonable and reliable
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.645.pdf
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