Fast explicit dynamics finite element algorithm for transient heat transfer

by   Jinao Zhang, et al.

This paper presents a novel methodology for fast simulation and analysis of transient heat transfer. The proposed methodology is suitable for real-time applications owing to (i) establishing the solution method from the viewpoint of computationally efficient explicit dynamics, (ii) proposing an element-level thermal load computation to eliminate the need for assembling global thermal stiffness, leading to (iii) an explicit formulation of nodal temperature computation to eliminate the need for iterations anywhere in the algorithm, (iv) pre-computing the constant matrices and simulation parameters to facilitate online calculation, and (v) utilising computationally efficient finite elements to efficiently obtain thermal responses in the spatial domain, all of which lead to a significant reduction in computation time for fast run-time simulation. The proposed fast explicit dynamics finite element algorithm (FED-FEM) employs nonlinear thermal material properties, such as temperature-dependent thermal conductivity and specific heat capacity, and nonlinear thermal boundary conditions, such as heat convection and radiation, to account for nonlinear characteristics of transient heat transfer. Simulations and comparison analyses demonstrate that not only can the proposed methodology handle isotropic, orthotropic, anisotropic and temperature-dependent thermal properties but also satisfy the standard patch tests and achieve good agreement with those of the commercial finite element analysis packages for numerical accuracy, for 3-D heat conduction, convection, radiation, and thermal gradient concentration problems. Furthermore, the proposed FED-FEM algorithm is computationally efficient and only consumes a small computation time, capable of achieving real-time computational performance, leading to a novel methodology suitable for real-time simulation and analysis of transient heat transfer.



There are no comments yet.


page 9

page 10

page 14

page 15

page 16

page 17

page 18

page 19


Real-time computation of bio-heat transfer in the fast explicit dynamics finite element algorithm (FED-FEM) framework

Real-time analysis of bio-heat transfer is very beneficial in improving ...

Toward transient finite element simulation of thermal deformation of machine tools in real-time

Finite element models without simplifying assumptions can accurately des...

Modeling of a multiple source heating plate

Heating plates describe the transfer of heat from actuators to a target ...

Instabilities driven by frontal polymerization in thermosetting polymers and composites

Frontal Polymerization (FP) was recently demonstrated as a faster, more ...

A Methodology for Thermal Simulation of Interconnects Enabled by Model Reduction with Material Property Variation

A thermal simulation methodology is developed for interconnects enabled ...

A numerical approach for heat flux estimation in thin slabs continuous casting molds using data assimilation

In the present work, we consider the industrial problem of estimating in...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.