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Evaluating the performance of an Inexact Newton method with a preconditioner for dynamic building system simulation
Journal article   Peer reviewed

Evaluating the performance of an Inexact Newton method with a preconditioner for dynamic building system simulation

Zhelun Chen, Jin Wen, Anthony J. Kearsley and Amanda Pertzborn
Journal of building performance simulation, v 15(1), pp 112-127
02 Jan 2022

Abstract

building system HVAC simulation large-scale simulation Newton-Krylov method
Efficiently, robustly, and accurately solving systems of nonlinear differential algebraic equations for dynamic building system simulation is becoming more important due to the increasing need to simulate large-scale problems. The focus of this paper is an investigation of methods for solving the nonlinear algebraic equations encountered in dynamic building system simulations. Dynamic building system simulations employ a myriad of solution techniques, many of which use derivative information. As the problem size grows, so do the memory requirements, leading to challenges in solving large-scale problems. Newton-Krylov methods are a promising candidate for large-scale simulation. The performance of these methods is often improved, sometimes drastically, when employed with a preconditioning technique. Here, a cost-effective preconditioning technique is applied to a Newton-Krylov method and tested on a series of problems. To illustrate the benefits of the approach, comparison is made to the frequently employed Powell's Hybrid Method.

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Collaboration types
Domestic collaboration
Web of Science research areas
Construction & Building Technology
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