Machine learning optimization of compact finite volume methods on unstructured grids

CB Zhou, Q Wang, YX Ren - Journal of Computational Physics, 2024 - Elsevier
Fourier analysis based optimization techniques have been developed for numerical
schemes on structured grids and result in significant performance improvements. However …

A shock capturing artificial viscosity scheme in consistent with the compact high-order finite volume methods

Z Wu, YX Ren - Journal of Computational Physics, 2024 - Elsevier
This paper presents a shock capturing artificial viscosity scheme for the compact high-order
finite volume methods in terms of the variational reconstructions on unstructured grids. The …

A scale-aware dispersion-relation-preserving finite difference scheme for computational aeroacoustics

Y Li, YX Ren - Physics of Fluids, 2023 - pubs.aip.org
The numerical schemes for computational aeroacoustics (CAA) should have minimal
dispersion and proper dissipation in order to accurately capture the amplitude and phase of …

Quasi-Newton positivity-preserving scheme for the Spalart-Allmaras turbulence model using unstructured grids

Y Mor-Yossef - Journal of Computational Physics, 2024 - Elsevier
A new implicit method for solving the Spalart-Allmaras (SA) turbulence model is proposed
using a formal second-order upwind scheme on unstructured grids for steady-state flows …

Numerical investigation of angle parameters of tip sails for improvement of aircraft flight performance

M Yang, S Li, X Bian, J Liu - Engineering Applications of …, 2024 - Taylor & Francis
Inspired by the tip feathers of soaring birds, the device of tip sails was designed and
installed on the wing to achieve drag reduction. The influences of design parameters …

A general positivity-preserving algorithm for implicit high-order finite volume schemes solving the Euler and Navier-Stokes equations

QM Huang, H Zhou, YX Ren, Q Wang - Journal of Computational Physics, 2024 - Elsevier
This paper presents a general positivity-preserving algorithm for implicit high-order finite
volume schemes that solve compressible Euler and Navier-Stokes equations to ensure the …

Combination of Advanced Actuator Line/Disk Model and High-Order Unstructured Finite Volume Solver for Helicopter Rotors

M Yang, S Li, W Pei - Aerospace, 2024 - mdpi.com
In the research field of rotorcraft aerodynamics, there are two fundamental challenges:
resolving the complex vortex structures in rotor wakes and representing the moving rotor …

High-Order Accurate Implicit Time Marching Scheme for Solving Compressible Navier-Stokes Equations Based on Temporal Reconstruction

H Zhou, YX Ren - Available at SSRN 5049234 - papers.ssrn.com
This paper presents a new family of high-order implicit time marching schemes based on
direct integration and temporal reconstruction (DITR). These schemes can be used to solve …

A Reconstruction Technique for High-order Variational Finite Volume Schemes Based on Conjugate Gradient Method

F Ni, J Pan, WG Zeng, YX Ren - Available at SSRN 4995352 - papers.ssrn.com
This paper proposes a novel reconstruction technique based on conjugate gradient method
for the variational finite volume schemes. Compared with the Gauss-Seidel or Jacobian …

[PDF][PDF] Machine learning optimization framework for numerical schemes on unstructured grids

CB Zhou, Q Wang, YX Ren - Available at SSRN 4490350 - researchgate.net
Fourier analysis based optimization techniques have been developed for numerical
schemes on structured grids and result in significant performance improvements. However …