The leakage flow through straight through labyrinth seals with tooth on stator was investigated by performing CFD simulations .ANSYS Fluent is used to simulate the fluid flow through straight through Labyrinth seals. The effect of seal geometry on discharge coefficient, carry over coefficient and expansion factor is studied by varying clearance, pitch, tooth height, tooth width ,Reynolds number and rotor speed. Derived quantities Such as carry over coefficient, coefficient of discharge and expansion factor are analyzed as a function of the tooth with preceding cavity to predict the effectiveness of the seal. To understand the effect of varying seal geometries and swirl, 2D CFD simulations were performed. It was found that the clearance to pitch ratio is a strong geometry factor which affect the performance of the seal. The carryover coefficient which describes the portion of kinetic energy carried over from one cavity to the next is also examined. It was found to be a function of Reynolds number and shaft speed. Discharge coefficient describes the losses which occur when fluid flows through the cavity and under the tooth. Just like the carryover coefficient, it is also discovered that it is a strong function of Reynolds number and shaft speed.

This diploma thesis deals with the impact of legislation on information system in a particular bank institution. Based on the proposal of European Market Infrastructure Regulation it identifies areas where the bank institution does not fulfill the regulation requirements. The thesis also tries to suggest existing processes adjustment and guarantee for them the support of information systems. During the existing processes investigation it discovers other weaknesses and suggests solutions leading to their elimination. These solutions would also lead to acceleration and increase in efficiency within the Straightthrough Processing model. The thesis devotes to all points of European regulation which should be fulfilled in the bank institution's point of view. First the current situation and then the solution of the particular point are mentioned. The thesis looks more detailed into central clearing. There are analyzed possible options in the process point of view. The impacts on the information system are specified for the chosen and most appropriate option. In order to secure the compact understanding of investigated issues, the thesis includes relations of European Market Infrastructure Regulation to the BASEL III concept, regulation supervision authorities in the European Union or introduction to functioning and core of financial derivatives.