A new class of higher-order decoupled schemes for the incompressible Navier-Stokes equations and applications to rotating dynamics

K Wu, F Huang, J Shen - Journal of Computational Physics, 2022 - Elsevier
A new class of time discretization schemes for the Navier-Stokes equations with non-
periodic boundary conditions is constructed by combining the SAV approach for general …

A novel energy-optimized technique of SAV-based (EOP-SAV) approaches for dissipative systems

Z Liu, Y Zhang, X Li - Journal of Scientific Computing, 2024 - Springer
In recent years, the scalar auxiliary variable based (SAV-based) approach has become very
popular and hot in the design of linear, high-order and unconditional energy stable schemes …

Efficient energy stable schemes for incompressible flows with variable density

B Li, J Shen, Z Yang, Y Zhang - Journal of Computational Physics, 2024 - Elsevier
We present novel numerical schemes for the incompressible Navier-Stokes equations with
variable density and address two critical concerns, ie, the preservation of lower density …

Bound/positivity preserving SAV schemes for the Patlak-Keller-Segel-Navier-Stokes system

X Huang, J Shen - Journal of Computational Physics, 2023 - Elsevier
Abstract The Patlak-Keller-Segel-Navier-Stokes system describes the biological chemotaxis
phenomenon in the fluid environment. It is a coupled nonlinear system with unknowns being …

Highly efficient variant of SAV approach for two-phase incompressible conservative Allen–Cahn fluids

J Yang, J Chen, Z Tan - Engineering with Computers, 2022 - Springer
Herein, we construct efficient linear, totally decoupled, and energy dissipative schemes for
two-phase incompressible conservative Allen–Cahn (CAC) fluid model. The binary CAC …

Scalar Auxiliary Variable (SAV) Stabilization of Implicit‐Explicit (IMEX) Time Integration Schemes for Non‐Linear Structural Dynamics

SB Kwon, A Prakash - International Journal for Numerical …, 2025 - Wiley Online Library
Implicit‐explicit (IMEX) time integration schemes are well suited for non‐linear structural
dynamics because of their low computational cost and high accuracy. However, the stability …

A variable time-step IMEX-BDF2 SAV scheme and its sharp error estimate for the Navier–Stokes equations

Y Di, Y Ma, J Shen, J Zhang - ESAIM: Mathematical Modelling and …, 2023 - esaim-m2an.org
We generalize the implicit-explicit (IMEX) second-order backward difference (BDF2) scalar
auxiliary variable (SAV) scheme for Navier–Stokes equation with periodic boundary …

Error estimate of a consistent splitting GSAV scheme for the Navier-Stokes equations

X Li, J Shen - Applied Numerical Mathematics, 2023 - Elsevier
We carry out a rigorous error analysis of the first-order semi-discrete (in time) consistent
splitting scheme coupled with a generalized scalar auxiliary variable (GSAV) approach for …

An unconditionally energy dissipative, adaptive IMEX BDF2 scheme and its error estimates for Cahn–Hilliard equation on generalized SAV approach

Y Wei, J Zhang, C Zhao, Y Zhao - IMA Journal of Numerical …, 2024 - academic.oup.com
An adaptive implicit-explicit (IMEX) BDF2 scheme is investigated on generalized SAV
approach for the Cahn–Hilliard equation by combining with Fourier spectral method in …

A general linear method approach to the design and optimization of efficient, accurate, and easily implemented time-stepping methods in CFD

V DeCaria, S Gottlieb, ZJ Grant, WJ Layton - Journal of Computational …, 2022 - Elsevier
In simulations of fluid motion time accuracy has proven to be elusive. We seek highly
accurate methods with strong enough stability properties to deal with the richness of scales …