Design of efficient tidal arrays relies on the adopted spacing between turbines and their mutual interplay. Turbines affected by wake shadowing operate in harsher flow conditions, such as higher turbulence levels or lower incident velocity, which leads to reduced performance larger extreme fatigue loading. To extend knowledge about turbine-to-turbine interplay arrays, high-fidelity numerical simulations using a Large-Eddy Simulation-Actuator Line Method (LES-ALM) are carried out quantify...

This paper presents large eddy simulations (LESs) of symmetric and asymmetric (cambered) airfoils forced to undergo deep dynamic stall due a prescribed pitching motion. Experimental data in terms lift, drag, moment coefficients are available for the NACA 0012 airfoil these used validate LESs. Good agreement between computed experimentally observed is found confirming accuracy method. The influence foil asymmetry on aerodynamic analyzed by subjecting 4412 same flow motion conditions. Flow...

Surface tension plays a crucial role in determining the interfacial behavior between partially miscible fluid systems, and affects overall dynamics of phase transition processes. Accurate modeling surface is for understanding predicting various phenomena, such as capillary-driven flows, droplet formation, dynamics. Cubic equations state (EoS), van der Waals (vdW) model, incorporate two corrective terms to account intermolecular interactions. These improve predictions equation at high...

Summary The representation of geometries as buildings, flood barriers or dikes in free surface flow models implies tedious and time‐consuming operations order to define accurately the shape these objects when using a body fitted numerical mesh. immersed boundary method is an alternative way solid bodies inside computational domain without need fitting mesh boundaries object. In direct forcing method, represented by grid Lagrangian markers, which its are independent from fluid Eulerian This...

In this work we present a high-accurate discretization to solve the compressible Navier-Stokes equations using an Arbitrary Lagrangian-Eulerian meshless method (SPH-MLS), which can be seen as general formulation that includes some well-known meshfree methods particular case. The is based on use of Moving Least Squares (MLS) approximants weight functions Galerkin and accurate discretize convective viscous fluxes. This also verifies discrete partition unity reproduces zero-gradient condition...

In this work we present a δ-Smoothed Particle Hydrodynamics (SPH) scheme for weakly compressible flows with automatic adaptive numerical dissipation. The resulting is meshless self-adaptive method, in which the introduced artificial dissipation designed to increase zones where flow under-resolved by scheme, and decrease it not required. accuracy robustness of proposed methodology tested solving several examples. Using are able recover theoretical decay kinetic energy, even very coarse...

We present a new methodology to statistically determine the net value (NPV) and internal rate of return (IRR) as financial estimators shale gas investments. Our method allows us forecast, in fully probabilistic setting, performance risk understand importance different factors that impact investment. The developed this study combines, through Monte Carlo simulation, computational modeling production from wells with stochastic simulation price geometric Brownian motion (GMB). To illustrate...

A comprehensive model for the fatigue analysis of flexible pavements that considers effects dynamic axle loads is presented in this paper. The main objective work to quantify reduction structural service life pavement resulting from rise exerted by traffic as progressive deterioration road profile occurs. First, procedure pavements, defined Spanish Standard 6.1-IC, explained detail. implementation here specific standard, but underlying concepts are not restrictive and can be easily adapted...

The structural failure of a flexible pavement occurs when the accumulated fatigue damage produced by all vehicles that have passed over each section exceeds certain threshold. For this reason, service life can be predicted in terms caused passage single standard axle and expected evolution traffic intensity (measured equivalent axles) time. In turn, an depends on vertical load exerted wheels surface, as given technical application, depths mechanical characteristics layers compose section....

A highly accurate SPH method with a new stabilization paradigm has been introduced by the authors in recent paper aimed to solve Euler equations for ideal gases. We present here extension of viscous incompressible flow. Incompressibility is tackled assuming weakly compressible approach. The adopts SPH-ALE framework and improves accuracy taking high-order variable reconstruction Riemann states at midpoints between interacting particles. moving least squares technique used estimate derivatives...