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2004 Vol. 30, T. 2 165--168
EN The article deals with the analysis of the natural discs frequencies realized by the means of mathematic simulation by the finite elements method, by which the programs AutoCAD and Cosmos M were used. First fifty natural frequencies are presented for the listed type of the steel disc. The experiment[...]
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
EN Accuracy of engineering and economic calculations in different areas requires the use of accurate and prompt values of heat capacity for new or modified materials. A number of existing methods have an error in measuring the heat capacity of powder materials, and use non-standard devices and electric[...]
Transactions of the Institute of Fluid-Flow Machinery
2016 nr 134 45--62
EN The results of experiments on the 5-stage steam turbine are presented. The parameters of individual stages as well as the whole turbine are observed during the gradual start-up to nominal operating parameters. The pressures and temperatures are shown at stages in idling, heating up the experimental [...]
Archives of Hydro-Engineering and Environmental Mechanics
EN The paper presents results of an experimental and theoretical study of the hydraulic transients in straight pipes and numerical simulations of unsteady flow in pipe networks. A mathematical model consists of a set of partial differential equations of hyperbolic type, which have been transformed by t[...]
Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
2014 nr 146 79--87
EN The results of experiments performed on a 5-stage steam turbine are presented. Operating parameters close to the real design parameters are simulated. The modes with the slightly different input temperature and pressure are also considered. Thermodynamic efficiency defined based on the torque moment[...]
Roczniki Inżynierii Budowlanej
2014 z. 14 85--90
SK Článok sa zaoberá stanovením tlakových koeficientov na modeli kocky v mierke 1:30 pomocou experimentov v dvoch odlišných tuneloch s medznou vrstvou (STUBA, VZLU). Výsledky meraní boli porovnané s literatúrou, ktorá uvádza hodnoty tlakových koeficientov meraných priamo na reálnej kocke s hranou 6 m, [...]
Roczniki Inżynierii Budowlanej
2015 z. 15 29--35
EN The influence of a nearby structure on the turbulent wind flow around the cube structure was investigated in this paper. This problem was solved by two different methods. The first one was the numerical solution by CFD simulations. Obtained results were compared with the results from tests made in t[...]
Archiwum Odlewnictwa
2001 R. 1, nr 2 73--78
PL Koło samochodowe odlano ze stopu AZ91 BE w formie bentonitowej o zawartości 5% siarki i 1% kwasu borowego oraz rdzeniem furanowym. Skład chemiczny stopu AZ 91 BE: 8.13% Al; 0.61% Zn; 0.24% Mn; reszta Mg. Pole temperatury odlewu koła zmierzono i symulowano używając programu SIMTEC. Po obróbce cieplne[...]
EN An automobile wheel was cast of AZ 91 BE alloy, the material used for the mould was bentonite with 5% of sulphur and 1% of boric acid, the material for the cores was furane. Chemical composition of AZ 91 BE: 8.13% Al; 0.61% Zn; 0.24% Mn; the rest was Mg. The temperature field of the wheel casting wa[...]
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