Month: June 2015

European Airline Market
Aviation, Operations

European Airline Market

Low cost vs Legacy carriers Since the advent of low cost airlines in European Skies, the Airline industry has seen fierce competition. On point-to-point short haul flights, low costs carriers have bled legacy carriers dry. On long-haul services, these same low costs operators are breaking their teeth trying to enter a market, which is owned mostly by well-established legacy carriers. The European aviation market is a very dynamic environment. It is composed of a multitude of airlines, most of which are old national flag carriers, challenged by their own lack of flexibility and new low cost airlines. The sky is littered with failed airlines such as Sabena or Swissair, faltering airlines such as Corsair, AF-KLM, Alitalia or Lufthansa, and flourishing airlines such as Iberia or Ryanair....
Large Eddy Simulation of Wind Farms
Aerodynamics and wind energy, Aviation

Large Eddy Simulation of Wind Farms

Numerical Experiments with Energy-Conserving schemes To predict the power produced by a wind farm, one must at least know the velocity of the air flowing through the farm. The wind velocity can be measured using meteorological masts with devices that can assess wind speed and direction a given point or even over a limited area. However, this data is not enough to study complex flow phenomena like gusts, kinetic energy transport, and the effect of the wind farm on local weather. This article explains the challenges involved in complementing experimental data with that from simulations. A wind farm consists of a cluster of wind turbines placed over a piece of land or at sea, that work together to produce electricity from the wind. The wind turbines are generally placed in a manner that...