Finite difference modeling of heat diffusion on diffusion-limited aggregation generated fractal structures

Mario A. Carvajal; Basanta R. Pahari; William Oates

doi:10.1117/12.2658500

18 April 2023 Finite difference modeling of heat diffusion on diffusion-limited aggregation generated fractal structures

Mario A. Carvajal, Basanta R. Pahari, William Oates

Author Affiliations +

Proceedings Volume 12484, Behavior and Mechanics of Multifunctional Materials XVII; 1248407 (2023) https://doi.org/10.1117/12.2658500
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Abstract

Fractal structures are characterized by the self-similarity they exhibit at different length scales. This self-similarity can be characterized using a measure called the fractal dimension, which quantifies the complexity by the ratio of the change in geometry by the change in scale. This measure is used to describe these geometries mathematically by employing fractal order differential operators related to the structure’s fractal dimension. Fractal structures arise remarkably frequently in nature; some examples include snowflakes, lightning and blood vessels. In field-coupled intelligent materials, complex multi-scale material structures exhibit the same self-similar properties of fractals and therefore it is useful to model these structures in a fractal mathematical framework to better understand their behavior. Diffusion-limited aggregation (DLA) is an iterative process that produces a two-dimensional fractal structure, whereby particles undergo a random walk and cluster together to form larger structures of particles. The structures produced using this process can be observed in many natural systems such as electrodeposition and dielectric breakdown. A finite difference model was developed to simulate heat diffusion on different DLA structures with varying fractal dimension. The effect of the structure’s fractal dimension on the rate of heat transfer across the structure was analyzed.

Conference Presentation

Citation Download Citation

Mario A. Carvajal, Basanta R. Pahari, and William Oates "Finite difference modeling of heat diffusion on diffusion-limited aggregation generated fractal structures", Proc. SPIE 12484, Behavior and Mechanics of Multifunctional Materials XVII, 1248407 (18 April 2023); https://doi.org/10.1117/12.2658500

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available