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Modelowanie układu podciśnienia zapewniającego docisk platformy mobilnej do pionowej ściany

100%

Golec S. , Panfil W.

2015

tom R. 88, nr 10

824--827

Zaprezentowano modelowanie numeryczne układu podciśnienia zapewniającego docisk platformy mobilnej do pionowej betonowej ściany. Generatorem podciśnienia jest napęd śmigłowy. Modelowanie układu obejmuje wykonanie jego modelu CAD, przygotowanie siatki elementów skończonych oraz przeprowadzenie symulacji numerycznej przepływów CFD. Do modelowania i optymalizacji układu podciśnienia wykorzystano oprogramowanie Altair HyperWorks.

Presented in the paper is a method of numerical modeling of a vacuum system control to ensure secure contact of a mobile platform to a vertical concrete wall. Vacuum pressure was supplied by a propeller machine. Modeling of the vacuum system covered CAD-modeling of the system, preparation of a finite element network and finally, preparation and operation of the flow simulations (CFD). Altair HyperWorks software was used as the modeling and optimizing tool.

Flow charateristics of a low NOx emission burner

100%

Kardaś A. , Golec S.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2005

tom Vol. 9, No 1

65-79

Recent technological changes in the Polish power industry have created opportunities for reducing NOx and CO emissions, but - at the same time - created another operation problem: sulphur corossion of boilers' rear water-wall. This has been the motivation for performing a detailed study of the air flow and pulverized coal transport in low-NOx burners. A measuring stand was built inside a real medium power OP-230 boiler equipped with a low-NOx burner to measure the velocity field at the burner's outlet and to prepare experimental characteristics of the burner. To extend the description, a numerical model of the burner was constructed and numerical calculations were executed by means of the Fluent program. Numerically calculated velocity profiles were compared with the results of measurements. Further investigations of the low NOx burner included the flow of the air-pulverized coal mixture. The measured concentration of the coal dust was compared with numerically predicted distribution of particles. Both the measurements and the calculations have shown a highly non-uniform concentration of particles at the burner outlet. The obtained results have been helpful in formulating recommendations to improve burner geometry.

Masy elektrodowe dla elektrod samospiekających - dobór właściwości i kryteria ich oceny

70%

Kubica K. , Robak Z. , Raińczak J. , Golec S. , Bednarz S.

2001

tom z. 142

119-128

Soedeborgs self-backing electrodes are used on a large scale during the production of aluminium, iron alloys, carbide and in the copper metallurgy. For many reason these are very complicated and troublesome processes, where the quality of the used electrode mass has the crucial meaning for their safe (without the failure) and optimum run. The key issue for evaluation of mass behaviour inside the electrode is the knowledge of its transformation process into the plastic state and backing process in the contact set. There has been developed a prediction procedure of mass behaviour inside the electrodes during the backing within the contact set. It is based on the evaluation of chosen technological properties.

Zakres i mechanizm urzadzania przestrzeni wiejskiej

70%

Woch F. , Jedut R. , Banak E. , Cwik C. , Golec S.

tom 81

5-15