@ARTICLE{Jermak_Czeslaw_Mathematical_2012, author={Jermak, Czeslaw and Spyra, Andrzej and Rucki, Miroslaw}, number={No 1}, journal={Metrology and Measurement Systems}, pages={29-38}, howpublished={online}, year={2012}, publisher={Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation}, abstract={The goal of the proposed computational model was to evaluate the dynamical properties of air gauges in order to exploit them in such industrial applications as in-process control, form deviation measurement, dynamical measurement. The model is based on Reynolds equations complemented by the k-ε turbulence model. The boundary conditions were set in different areas (axis of the chamber, side surfaces, inlet pipeline and outlet cross-section) as Dirichlet's and Neumann's ones. The TDMA method was applied and the efficiency of the calculations was increased due to the "line-by-line" procedure. The proposed model proved to be accurate and useful for non-stationary two-dimensional flow through the air gauge measuring chamber.}, type={Artykuły / Articles}, title={Mathematical Model of Dynamic Work Conditions in the Measuring Chamber of an Air Gauge}, URL={http://www.czasopisma.pan.pl/Content/89856/PDF/Journal10178-VolumeXIX%20Issue1_02paper.pdf}, doi={10.2478/v10178-012-0002-2}, keywords={air gauges, dynamic measurement, in-process control}, }