REFINED TURBULENCE MODELING FOR POWER-GENERATION INDUSTRY

CFD applications in the context of power plants illustrate the detaile d three-dimensional studies in complex geometries that are possible to day, with a special emphasis on the necessity of solving the time-depe ndent equations. These routine simulations give a much more detailed r epresentation of many flow configurations than was possible with scale models in the design stage of the plants, thus increasing their safet y and life span. Aside from these global simulations conducted with st andard models, use of Second Moment Closures is shown to better repres ent the effects of body forces, such as buoyancy and rotation, encount ered in sub components of the plant. Finally Large Eddy Simulation is introduced on unstructured meshes and the related needs concerning flu id/structure coupling and unsteady thermal loading in plant components are described.