This paper presents two novel automated optimization approaches. The first one proposes a framework to optimize wind turbine blades by integrating multidisciplinary 3D parametric modeling, physics-based scheme, the Inverse Blade Element Momentum (IBEM) method, and Reynolds-averaged Navier–Stokes (RANS) simulation; second method introduces combining modeling an integrated goal-driven together wi...

the bem is applied to the solution of the torsion problem of non-homogeneous anisotropic non-circular prismatic bars. the problem is formulated in terms of the warping function. this formulation leads to a second order partial differential equation with variable coefficients, subjected to a generalized neumann type boundary condition. the problem is solved using the analog equation method (aem)...

As wind turbine technology proceeds towards the development of more advanced and complex machines, modelling tools with fidelity higher than ubiquitous Blade Element Momentum (BEM) method are needed. Among them, Actuator Line Method (ALM) stands out in terms accuracy computational cost. Moving from this background, an ALM has been developed within commercial solver CONVERGE®. elements novelty, ...

Homotopy perturbation method HPM and boundary element method BEM for calculating the exact and numerical solutions of Poisson equation with appropriate boundary and initial conditions are presented. Exact solutions of electrostatic potential problems defined by Poisson equation are found using HPM given boundary and initial conditions. The same problems are also solved using the BEM. The cell i...

The forward M/EEG problem consists in simulating the electric potential and the magnetic field produced outside the head by currents in the brain related to neural activity. All previously proposed solutions using the Boundary Element Method (BEM) were based on a double-layer integral formulation. We have developed an alternative symmetric BEM formulation, achieving a significantly higher accur...

Abstract. Floating offshore wind turbines may experience large surge motions, which can cause blade–vortex interaction if they are similar to or faster than the local speed. Previous research hypothesized that this phenomenon represented a turbulent wake state even vortex ring state, rendering actuator disc momentum theory and blade element invalid. This hypothesis is challenged, we show valid ...

Free stream tidal turbines are a source of growing interest in the marine renewable energy field. Some designs that use an actuated mechanism to control individual blade pitch, as the tidal current varies and even during a revolutionary cycle, face the challenge of ensuring high reliability under the loads imposed on the device in the harsh sub sea environment. Adaptive materials have been used...

of Paper The paper presents an algorithm for physically accurate simulation of elastic deformable objects that are also fast enough for real-time animation. The algorithm uses Boundary Element Method (BEM) (vs. Finite Element Method). The algorithm applies to deformable objects that can be simulated by linear elastic models. It achieves interactive speeds by exploiting coherence in typical inte...

In this work a novel method for the analysis with trimmed CAD surfaces is presented. The method involves an additional mapping step and the attraction stems from its simplicity and ease of implementation into existing Finite Element (FEM) or Boundary Element (BEM) software. The method is first verified with classical test examples in structural mechanics. Then two practical applications are pre...

Maintenance of proper neuronal excitability is vital to nervous system function and normal behavior. A subset of Drosophila mutants that exhibit altered behavior also exhibit defective motor neuron excitability, which can be monitored with electrophysiological methods. One such mutant is the P-element insertion mutant bemused (bem). The bem mutant exhibits female sterility, sluggishness, and in...