UCNS3D: An open-source high-order finite-volume unstructured CFD solver

A relaxed a posteriori MOOD algorithm for multicomponent compressible flows using high-order finite-volume methods on unstructured meshes

“…In the current study with UCNS3D [51,52] the least-square reconstruction approaches of Tsoutsanis et al [9,10,23,53] and Titarev et al [54] are adopted, that have been applied to laminar, transitional, and fully turbulent flows at the a wide-range of Mach numbers [9,10,23,45, . Herein the most key details of this approach are presented, and the reader is pointed to previous work for a detailed description of the implementations For an arbitrary cell i obtaining a high-order r + 1 order, requires the formation of an r order polynomial p i (x, y, z) which has to provide the volume-averaged value W i as follows:…”

A short note on a 3D spectral analysis for turbulent flows on unstructured meshes

“…For the inviscid fluxes, the approximate HLLC (Harten-Lax-van Leer-Contact) Riemann solver of Toro [18] is employed and the temporal discretisation employs the 4 th -order explicit Strong Stability Preserving (SSP) Runge-Kutta method [19], which is stable for C F L ≈ 1.5. All the schemes employed are implemented in the well established over several test problems [20][21][22][23][24][25][26][27][28] open-source UCNS3D CFD code [14,15]. It has been developed using object-oriented Fortran 2003, MPI message passing interface (MPI), and the Open Multi-Processing (OpenMP) application programming interface (API).…”

“…It has been developed using object-oriented Fortran 2003, MPI message passing interface (MPI), and the Open Multi-Processing (OpenMP) application programming interface (API). The reader is referred to [10,15,29] for more details on implementation and performance benchmarks.…”

“…This study introduces two techniques that can be used for any high-order numerical methods employing unstructured meshes for obtaining the 3D spectra, and it also compares them with the popular finuFFT [13] technique available. The UCNS3D CFD software package [14,15] is employed and the numerical framework is briefly introduced, followed by the methods adopted and numerical experiments using the Taylor-Green vortex with several numerical methods.…”

The Role of Computational Science in Wind and Solar Energy: A Critical Review

“…Various computational frameworks can be used to solve the equations, including Finite Volume (FV) [84] and Finite Element (FEM) methods [85,86]. These methods have been implemented in open-source and commercial CFD codes [87,88].…”