TEMP/W 2012 slope stability analysis.

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.

 

A soil's thermal conductivity 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.

 

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 modeled 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.

  • plus many more!