Zastosowanie numerycznych technik obliczeniowych w procesie projektowania i modernizacji sprężarek przepływowych

A full recognition of phenomena that occur in turbomachines by means of experimental investigations is time-and labor-consuming. In general, such investigations are very expensive as well. Sometimes the measurement of parameters of interest is insufficient or even impossible. Therefore, during recent years when time and economy play the most important role, a rapid development in tools for simulation of a wide spectrum of phenomena occurring, among others, in technology, can be observed. Commercial numerical codes available on the market allow us to predict the phenomena that occur in reality in a more and more precise way. The most important advantage of these solutions is the fact that much shorter time is needed to solve a given problem and less money is involved to obtain the data needed. However, the simulation of a real phenomenon remains still a mathematical simplification, although more and more precise, of reality. In many cases, such an attitude is satisfactory However, there are numerous instances when the numerical simulation without the experimental verification is insufficient. Sometimes experimental investigations conducted even on a machine model are necessary to pose boundary conditions in t numerical code. Such a situation oft takes place in case of turbomachines In this paper, a combination of latest CFD methods with the experimental verification on the example of the investigations of the DPI1.12 blower conducted at the Institute of Turbomachinery, TUL, has been presented. The ANSYS CFX version 10.0 commercial code has been employed for these flow simulations.