The paper presents studies of mathematical modelling in transonic flow through the first stage rotor of the axial compressor of homogenous and heterogeneous condensation. The condensation phenomena implemented into a commercial software is based on the classical theory of nucleation and molecular-kinetic droplet growth model. Model is validated against experimental studies available in the literature regarding the flow through the first stage of turbine compressor, i.e. the rotor37 transonic compressor benchmark test. The impact of air humidity and air contamination on the condensation process for different flow conditions is examined. The influence of latent heat release due to condensation exerts a significant impact on the flow structure, thus the analysis of the air humidity and contamination influence on the condensation is presented. The results presented indicate the non-negligible influence of air humidity on the flow structure in the transonic flow regime, thus it is recommended to take condensation phenomenon under consideration in high-velocity airflow simulations.
This paper is dedicated to Voivodship Park of Culture and Recreation in Chorzów (Silesia Park) – one of the biggest of its kind in Poland and in Europe (ca. 600 ha of total area). Construction of the Park had begun in 1954 according to the design under the direction of prof. Władysław Niemirski. After many years it became an example of successful land remediation and re-naturalization of anthropogenic landscape. The whole facility though formally created in socrealism style, actually represents classical modernism’s features inspired probably by American parks with a rich recreation program.
Silesia Park in Chorzów was established on land of poor quality and partially degraded. 60 years since that event, the research have been carried out to identify both the degree of structural preservation of the Park Stand’s structure in relation to the original design goals and also the direction of any changes – due to the effects of years of land remediation and the flora’s natural succession. It was found that vegetation of Silesia Park remains, in general, consistent with its original master plan, however, after 60 years significant changes have occurred, affecting the Park’s function, its general form and landscape values.
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