A RANS-BEM Method to Efficiently Include Appendage Effects in RANS-Based Hull Shape Evaluation

RANS : a Speech - to - Speech Translator Prototype

EUTRANS system is a telephone speech input translation prototype capable of translating telephone calls from one language to another. It assumes a human to human communication , each one speaking a different language, assisted by a system with translation capabilities. The prototype has been developed as a demonstrator for the Eu-ropean project with the same name. EUTRANS achieves a response ti...

Self-noise prediction of a flat plate using a hybrid RANS-BEM technique

The self-noise generated by a flat plate immersed in low Mach number flow is predicted using a hybrid RANS-BEM technique. A Reynolds Averaged Navier-Stokes (RANS) simulation is performed of the turbulent flow over the flat plate. The predicted flow field data, such as mean velocity, turbulent kinetic energy and turbulent dissipation rate, is then processed using a statistical noise model and co...

Componentality-based wall-blocking for RANS models

RANS-based Aerodynamic Shape Optimization of a Blended-Wing-Body Aircraft

A series of RANS-based aerodynamic shape optimization for an 800-passenger blended-wing-body aircraft is performed. A gradient-based optimization algorithm and a parallel structured multiblock RANS solver with Spalart–Allmaras turbulence model are used. The derivatives are computed using a discrete adjoint method considering both frozen-turbulence and full-turbulence assumptions. A total of 274...

Dynamic Backhaul Network Configuration in SDN-based Cloud RANs

The coordination of base stations in mobile access networks is an important approach to reduce harmful interference and to deliver high data rates to the users. Such coordination mechanisms, like Coordinated Multi-Point (CoMP) where multiple BSs transmit data to a user equipment, can be easily implemented when centralizing the data processing of the base stations, known as Cloud RAN. This centr...