Mathematics

Data on Numerical Analysis Described by Researchers at University of Incheon

  2012 APR 17 - (VerticalNews.com) -- According to the authors of a study from Inchon, South Korea, "The in-ground type of LNG storage tank is constructed below ground level, except for its roof, and has a slurry wall bearing soil and pore water pressure to store LNG in a safe condition. During the long term operation, soil freezing occurs:around the in-ground storage tank, despite the insulation provided inside the concrete tank, due to the cryogenic temperature of LNG."

  "Experimental and numerical studies were conducted on the soil-freezing characteristics and on the temperature distribution for an LNG storage tank constructed in coarse-grained and fine-grained soil; these are presented. A major concern is the ability to predict the freezing pressure from the results of laboratory freezing tests. The freezing pressure arising within the soil samples and the temperature of the samples inside were monitored with elapsed time. The degree of saturation versus freezing pressure curve is presented for fine-grained soil samples, and the maximum pressure is closely related to this curve. A time domain reflectometry apparatus was used to measure the volumetric water content by measuring the unfrozen water contents of frozen soils. This paper presents the results of the numerical analysis for the LNG storage tank in the West Sea LNG Receiving Terminal to evaluate the temperature distribution of 4 in-ground storage tanks," wrote E.C. Shin and colleagues, University of Incheon.

  The researchers concluded: "The connected observation between the results of a laboratory freezing test and the numerical analysis has revealed that the temperature variation of the concrete structure and soil is predictable, and the results are applicable in designing the in-ground storage tank."

  Shin and colleagues published their study in International Journal of Offshore and Polar Engineering (Soil Freezing Characteristics and Temperature Distribution in In-Ground LNG Storage Tank. International Journal of Offshore and Polar Engineering, 2012;22(1):53-62).

  For more information, contact E.C. Shin, Univ Incheon, Dept. of Civil & Environm Engn, Inchon, South Korea.

  Publisher contact information for the International Journal of Offshore and Polar Engineering is: Int Soc Offshore Polar Engineers, PO Box 189, Cupertino, CA 95015-0189, USA.

  Keywords: City:Inchon, Country:South Korea, Region:Asia, Mathematics

  This article was prepared by VerticalNews Mathematics editors from staff and other reports. Copyright 2012, VerticalNews Mathematics via VerticalNews.com.