SC 003 - YBCO Tape AC Loss

In this example, AC Loss in a multilayered high-temperature superconducting (HTS) tape is simulated.

Model definition

Element	Geometric details
air cylinder	radius = 8 cm
tape	width = 4 mm, heigth = 95 μm, length = 1 cm
copper layer	thickness = 20 μm
silver layer	thickness = 2 μm
YBCO layer	thickness = 1 μm
hastelloy layer	thickness = 50 μm
domain	length = 1 cm
YBCO cross-section	$A_{ybco}$ = $3.96 \cdot 10^{-9}$ m²

Simulation setup guide

Here, you’ll find a simplified guide on setting up this simulation in Quanscient Allsolve.

Step 1 - Create the geometry

In the Model section, build the tape model and surrounding air cylinder as detailed in the Model definition.

Step 2 - Define the materials

Proceed to the Properties section.

Assign the Air, Copper, Silver and YBCO superconductor materials to their respective volumes.

Create a new material for Hastelloy, and assign it to the thick middle layer of the tape. Add the material properties for Hastelloy:

• Electric conductivity
  • 1e6
• Magnetic permeability
  • mu0

Step 3 - Define the physics and apply boundary conditions

Proceed to the Physics section and add the following physics.

In Magnetism φ:

• The Constraint target is a top edge point on the air cylinder.
• The Lump I/V cut target is a circular loop along the top edge of the air cylinder.
• The Lump I/V cut actuation mode is Current.
• The External field target is the curved outer surface of the air cylinder.
• The External field (X, Y, Z) values are (0, Bext, 0).

In Magnetism H:

• H-φ coupling must be enabled.

Step 4 - Set up the simulation, run and plot

Proceed to the Simulations section and add a mesh that suits your needs.

Add a new simulation and select options. See step-by-step tutorial SC 001 - Superconductor AC loss for reference. Run the simulation.

Plot Time step in X axis and YBCO loss in Y axis to see the AC loss results in the YBCO layer.