Visual Analysis of the Finite‐Time Lyapunov Exponent. (18th July 2020)

• Record Type: Journal Article
• Authors: Sagristà, Antoni; Jordan, Stefan; Sadlo, Filip
• Is Part Of: Computer graphics forum. Volume 39:Number 3(2020)
• Page Start: 331
• Page End: 342
• Publication Date: 2020-07-18
• Subjects: CCS Concepts -- Human‐centered computing → Scientific visualization; Visual analytics; Computer graphics -- Periodicals; 006.605
• DOI: 10.1111/cgf.13984
• Languages: English
• ISSNs: 0167-7055

Abstract

Abstract: In this paper, we present an integrated visual analytics approach to support the parametrization and exploration of flow visualization based on the finite‐time Lyapunov exponent. Such visualization of time‐dependent flow faces various challenges, including the choice of appropriate advection times, temporal regions of interest, and spatial resolution. Our approach eases these challenges by providing the user with context by means of parametric aggregations, with support and guidance for a more directed exploration, and with a set of derived measures for better qualitative assessment. We demonstrate the utility of our approach with examples from computation fluid dynamics and time‐dependent dynamical systems.