This paper presents a three-dimensional through-flow approach based on the cylindrical Euler equations incorporating body force method. Blade performance is captured through mixture of empirical correlations and novel reverse flow treatment. The code first application physically correct Godunov solver to rotating stall surge modelling. ensures accurate calculation inter-cell fluxes unlike in typical modern CFD codes which non-linear convective terms are linearised. Validation consists...

This work focuses on the review of particle-based multiscale and hybrid methods that have surfaced in field fluid mechanics over last 20 years. We consider five established particle methods: molecular dynamics, direct simulation Monte Carlo, lattice Boltzmann method, dissipative dynamics smoothed-particle hydrodynamics. A general description is given each method conjunction with applications. An analysis length scale separation revealed current only bridge across scales which are order...

A multiphase approach is used to study macrosegregation phenomena that occur during solidification of steel ingot castings. The goal enhance the understanding different mechanisms formation. 4 cases are presented consecutively with increasing complexity model assumptions and dimensions: (1) feeding-induced macrosegregations in 1-dimentional unidirectional situation, (2) caused by thermosolutal buoyancy driven flow a 2-dimensional axially symmetric benchmark ingot, (3) grain sedimentation...

Abstract This paper introduces a unified concept and algorithm for the fractional-step (FS), artificial compressibility (AC) pressure-projection (PP) methods solving incompressible Navier-Stokes equations. The proposed FSAC-PP approach falls into group of pseudo-time splitting high-resolution incorporating characteristics-based (CB) Godunov-type treatment convective terms with PP methods. Due to fact that CB are applicable directly hyperbolic AC formulation not elliptical FS-PP (split)...

The quantitative measure of dissipative properties different numerical schemes is crucial to computational methods in the field aerospace applications. Therefore, objective present study examine resolving power Monotonic Upwind Scheme for Conservation Laws (MUSCL) scheme with three slope limiters: one second-order and two third-order used within framework Implicit Large Eddy Simulations (ILES). performance dynamic Smagorinsky subgrid-scale model classical Simulation (LES) approach examined....

This paper focuses on the effects of external geometrical modifications aerodynamic characteristics MQ-1 predator Unmanned Combat Aerial Vehicle (UCAV) using computational fluid dynamics. The investigations are performed for 16 flight conditions at an altitude 7.6 km and a constant speed 56.32 m/s. Two models analysed, namely baseline model with installed it. Both investigated various angles attack from −4° to 16°, bank 0° 6° yaw 4°. Due unavailability any experimental (wind tunnel or test)...

The present paper deals with the formation of macrosegregation in a benchmark ingot using (Fe-C-Cr) ternary alloy composition. numerical investigation complex multiphase phenomena is difficult study, because thermophysical properties depend strongly on temperature, concentration, pressure and chemical composition as well. For modeling solidification melting processes different phases (e.g. liquid, equiaxed crystals columnar dendrite trunks) have been considered. mass, momentum, energy...

This paper describes the validation of surge simulations produced using low-order code ACRoSS with experimental data from a 4. 5-stage high-speed rig, representative front stages modern high-pressure compressor (HPC). is an unsteady, 3D through-flow developed at Cranfield University to predict performance during stall events. The was derived Rig250 build 6B test campaign, carried out in 2016 by DLR Institute Propulsion Technology. To correctly represent events, ducting testbed upstream and...

This research paper focuses on a novel coupling of the aerodynamic and structural behaviour double-element composite front wing Formula One (F1) vehicle, which was simulated studied for first time here. To achieve this goal, modified two-way method employed in context high performance computing (HPC) to simulate steady-state fluid-structure interaction (FSI) configuration using ANSYS software package. The plays key role generating forces controlling fresh airflow maximise an F1 car....

Recent technological developments in the field of Additive Manufacturing (AM) provide a number opportunities for utilisation high-performance copper alloys aerospace applications. The additively manufactured LOx/LNG DemoP1 aerospike engine demonstrator designed by Pangea Aerospace is characteristic example based on Direct Metal Laser Sintering (DMLS) technology. thrust chamber and LOx cooling channels are using GRCop-42 material powder, Cu-Cr-Nb alloy developed National Aeronautics Space...

This paper investigates the effects of wall mass, m w, and bonding stiffness, κ, on thermal resistance at a solid–liquid interface. The main observation is that mass influences independently its theoretical harmonic frequency, √κ/m w walls. We show increasing atomic solid particles significantly increases temperature jump Furthermore, this effect becomes continuously more important as value stiffness decreases. To understand this, we study density profiles walls, which shed light their...

Abstract This work focuses on an advanced coupling of computational fluid dynamics (CFD) and structural finite element analysis (FEA) the aeroelastic behavior a single inverted composite wing with novelty including ground effect. The front formula one (F1) car can become flexible under loading due to elastic characteristics materials, resulting in changing flow field eventually altering overall aerodynamics. purpose this study is setup accurate fluid–structure interaction (FSI) modeling...

Abstract This article focuses on the aerodynamic design of a morphing aerofoil at cruise conditions using computational fluid dynamics (CFD). The has been analysed Mach number 0.8 and Reynolds $3 \times 10^{6}$ , which represents transonic speed commercial aircraft. In this research, NACA0012 identified as baseline where analysis performed under steady range angles attack between $0^{^{\kern1pt\circ}}$ $3.86^{^{\kern1pt\circ}}$ . performance case compared to for different deflections (...