Ansys Lumerical HEAT Transient Simulation — Lesson 2

Transient Simulation Settings

In this video, we will learn about various settings in sources and heat solver objects that are important when running transient simulations.

Example Device

The extremely high thermal conductivity of graphene has generated a lot of attention as a potential heat spreader. In the next unit, as a simple example of a transient heat transport simulation, we will calculate the time-resolved heat flow in a glass thin film with a few layers of graphene on top. The simulation is expected to show that the high thermal conductivity (2000 W/mK) of graphene makes the heat flow at the top layer of glass much faster as compared to the heat flow inside the film. As shown in the schematic below, we assume a 50 nm thickness for the graphene layer. By utilizing the symmetry of the structure, we can perform a 2D simulation instead of a 3D simulation similar to the thin film simulation performed in the My First Simulation section of this course. We will study the time evolution of the temperature profile of the thin film using the transient mode of the HEAT solver.

In this video, we will perform a simple transient simulation using the HEAT solver to simulate the time dependency of temperature in a glass thin film covered with graphene. The simulation project used in this unit can be downloaded below: