The aerodynamic performance of a cylinder Pitot probe for velocity measurements in compressible non-ideal gas flows, such as those encountered Organic Rankine Cycle (ORC) turbines, is investigated by means Computational Fluid Dynamics. Numerical simulations are performed at subsonic and transonic conditions, freestream Reynolds numbers the critical regime. working fluid organic vapour Novec™ 64...

We numerically investigate stalling flow around a static airfoil at high Reynolds numbers using the Reynolds-averaged Navier–Stokes equations (RANS) closed with Spalart–Allmaras turbulence model. An arclength continuation method allows to identify three branches of steady solutions, which form characteristic inverted S-shaped curve as angle attack is varied. Global stability analyses these solu...

The investigation of the turbulence statistics for single-phase turbulent flow around pipe bends have mainly been experimental. Considering cost-effectiveness numerical computational fluid dynamics (CFD) compared to experimental measurement, this work aims study accuracies different CFD models, and establish their functionality limitations. This paper investigates capabilities models spatial di...

A novel penalized wall function method for simulations of wall-bounded compressible turbulent flows is proposed. The new approach based on the Reynolds-averaged Navier–Stokes (RANS) equations to model outer region boundary layer, while inner part approximated by equilibrium model. differential formulation match external and solutions reformulated in a form generalized characteristic-based volum...

In recent years, machine learning methods represented by deep neural networks (DNNs) have been a new paradigm of turbulence modeling. However, in the scenario high Reynolds numbers, there are still some bottlenecks, including lack high-fidelity data and stability problem coupling process models Reynolds-averaged Navier–Stokes (RANS) solvers. this paper, we propose an improved ensemble Kalman in...

The present paper introduces a parametric optimization of several Active Flow Control (AFC) parameters applied to NACA-8412 airfoil at single post-stall Angle Attack (AoA) 15∘ and Reynolds number Re = 68.5×103. aim is enhance the efficiency maximize its lift. boundary layer separation point was modified using Synthetic Jet Actuators (SJA), carried on by systematically changing pulsating frequen...

The purpose of this paper is to analyze the flow field structure in transient state and performance of secondary injection system for thrust vectoring in divergent section of a two-dimensional nozzle. Secondary injection for thrust vectoring in a two-dimensional nozzle is studied by solving three-dimensional Reynolds-averaged equations by means of fluent solver. Spalart-allmaras model was used ...

Abstract. A new method for high-fidelity aeroelastic static analysis of composite laminated wings is proposed. The structural and the fluid-dynamic are coupled in a heterogeneous staggered process. Finite Element Method (FEM), Carrera Unified Formulation (CUF) Equivalent Plate Modelling (EPM) combined to model complex three-dimensional geometries bi-dimensional framework; Computational Fluid Dy...