연구의 선진화와 생산성 향상에
필요한 최적의 소프트웨어와 컨설팅을
공급하도록 노력하겠습니다.
 
 

Comprehensive and Powerful

TEMP/W is a finite element software product for analyzing thermal changes in the ground due to environmental changes or due to the construction of facilities such as buildings or pipelines. The comprehensive formulation makes it possible to analyze both simple and highly complex geothermal problems. You can apply TEMP/W to the geothermal analysis and design of geotechnical, civil, and mining engineering projects, including facilities that are subjected to freezing and thawing temperature changes.
TEMP/W is formulated to account for the latent heat associated with water turning into ice and ice turning into water. The rate at which the latent heat is absorbed or released is controlled by an unfrozen water content function. Above the phase change temperature, all the water is unfrozen. As the temperature falls below the phase change point, the portion of the water that remains unfrozen decreases. Complete flexibility in defining the unfrozen water content function makes it possible to analyze a wide variety of ground conditions. When linked with SEEP/W or AIR/W it can consider convective heat transfer of flowing water or moving air.
 

Typical Applications

TEMP/W can model almost any geothermal problem, including:
  • Degradation of permafrost beneath warm buildings or around a warm, buried pipeline
  • Development of a frost bulb around a chilled pipeline
  • Ground freezing for soil stabilization, including use of freezing pipes around mine shafts or thermosyphons on top of earth dams
  • Freeze-thaw action beneath roadways and airport runways
  • Frost depth penetration beneath chilled structures such as a recreational ice surface or a highway during winter
  • Effectiveness of various insulation alternatives for reducing freezing and/or thawing
  • 이외에 더 많은 기능들이 있습니다.
 
(큰 이미지 보기 ☞ click)
 

Features

  • Analysis types include steady-state or transient energy flow, 2-D energy flow in a cross-section or in plan view, and 3D axisymmetric energy flow
  • Boundary condition types include temperature or flux (fixed or a function of time), thermosyphons, convective surfaces, or imported climate data
  • Latent heat modelled using an unfrozen water content function
  • Frozen and unfrozen volumetric heat capacity and the volumetric water content specified individually for each soil type
  • Adaptive time stepping automatically inserts additional time steps when nodal temperatures change more than the specified criteria.
  • Initial conditions obtained from a previous analysis or specified as constant nodal temperatures
  • Undo and redo commands
  • 이외에 더 많은 기능들이 있습니다.
 

Formulation

TEMP/W is formulated to analyze ground temperature changes, including the effects of latent heat due to the phase change from ice to water and from water to ice. The analysis of latent heat effects makes TEMP/W a powerful software product for analyzing various ground conditions.
TEMP/W uses Gaussian numerical integration to formulate the element characteristic matrices. The integration involves sampling the element characteristics at selected points and summing the sampled values. As a result, it is possible to use a different material property at each sampled point, allowing the material properties to vary throughout the element.
The thermal conductivity of the soil varies with temperature. TEMP/W accommodates this with a general conductivity function, making it possible to consider a smooth transition in conductivity as the temperature changes from thawed to frozen conditions and vice versa.