v4.24.201 TTNP201 -Heat transfer with time-dependent conductivity

Summary:

This test consists in imposing a conductivity that varies as a function of time during a heat transfer. An imposed flow condition is applied to one edge of the wall and on the opposite edge the temperature remains constant. Conductivity increases over time and a temperature jump is observed on the edge where the flow is imposed.

The problem is addressed in PLAN, AXIS, and 3D.

The reference solution is obtained by the Crank-Nicholson iterative method.

The consideration of conductivity as a function of time is tested.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
  • 1.4. Initial conditions
  • 1.5. Temporal discretization
• 2. Benchmark solution
  • 2.1. Calculation method
  • 2.2. Reference quantities and results
  • 2.3. Uncertainty about the solution
  • 2.4. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. B modeling
  • 4.1. Characteristics of modeling
  • 4.2. Characteristics of the mesh
  • 4.3. Tested sizes and results
• 5. C modeling
  • 5.1. Characteristics of modeling
  • 5.2. Characteristics of the mesh
  • 5.3. Tested sizes and results
• 6. Summary of results