Development of a Three-Dimensional Unstructured Euler Solver for High-Speed Flows
Journal Title: INCAS BULLETIN - Year 2015, Vol 7, Issue 4
Abstract
This paper addresses the solution of the compressible Euler equations on hexahedral meshes for supersonic and hypersonic flows. Spatial discretization is accomplished by a cell-centered finite-volume formulation which employs two different upwind schemes for the computation of convective fluxes. Second-order solutions are attained through a linear state reconstruction technique that yields highly resolved flows in smooth regions while providing a sharp and clean resolution of shocks. The solution gradients required for the higher-order spatial discretization are estimated by a least-square method while Venkatakrishnan limiter is employed to preserve monotonicity and avoid oscillations in the presence of shocks. Furthermore, solutions are advanced in time by an explicit third-order Runge-Kutta scheme and convergence to steady state is accelerated using implicit residual smoothing. Flow around a circular arc in a channel and flow past a circular cylinder are studied and results are presented for various Mach numbers together with comparisons to theoretical and experimental data where possible.
Authors and Affiliations
Tudorel AFILIPOAE, Marius STOIA-DJESKA
Keywords
Related Articles
- EP ID EP159101
- DOI 10.13111/2066-8201.2015.7.4.1
- Views 90
- Downloads 0
[b]Regarding the evaluation of the solid rocket propellant response function to pressure coupling[/b]
High frequency combustion instabilities imply a major risk for the solid rocket motor stable working and they are directly linked to the propellant response to chamber pressure coupling. This article discusses a laborato...
SCALED RADIO CONTROLLED PLATFORM
The paper presents building, preparing and testing of a scaled RC aerial platform, as a basis for future flight measurements. The platform is a 1:6 scaled radio controlled model of AEROTAXI design in development. A numbe...
Neuro-fuzzy control synthesis for hydrostatic type servoactuators. Experimental results
Continuing recent works of the authors, the paper shows the developing and the application of a neuro-fuzzy control law to the positioning outer loop of a hydrostatic type servoactuator. Experimental results are presente...
[b]ALOAD - a code to determine the concentrated forces equivalent with a distributed pressure field for a FEM analysis[/b]
The main objective of this paper is to describe a code for calculating an equivalent system of concentrate loads for a FEM analysis. The tables from the Aerodynamic Department contain pressure field for a whole bearing s...
Determining the sensitivity of Data Envelopment Analysis method used in airport benchmarking
In the last decade there were some important changes in the airport industry, caused by the liberalization of the air transportation market. Until recently airports were considered infrastructure elements, and they were...