National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
25th Symposium on anemometry: proceedings
Chára, Zdeněk ; Klaboch, L.
Proceedings of 25th Symposium on Anemometry. The conference was oriented on the experimental techniques applied in fluid mechanics.
Influence of coarse-particle suspensions on flowmetering
Chára, Zdeněk ; Vlasák, Pavel
The paper deals with an investigation of an influence of coarse particles on flow metering by the electromagnetic and mass flowmeters. Presence of coarse particles has a negative impact on accuracy of the electromagnetic flowmeter, where low-frequency oscillations were observed.
On using radiometric method for measurement of slurry density distribution in pipe flow
Krupička, Jan ; Matoušek, Václav ; Frýdl, Ivo
Test loop for investigation of slurry flow was recently reconstructed at the Institute of hydrodynamics. The test loop is equipped with a radiometric device for measurement of density profiles in a pipe cross-section. The paper gives a description of the test loop and the radiometric device. The method of measurement and evaluation of density distribution is discussed. An attention is paid to identification and quantification of possible sources of measuring errors.
An Overview of Hot-Wire Probes for Simultaneous Measurement of the Velocity and the Scalar Quantity
Antoš, Pavel ; Mazur, Oton ; Uruba, Václav
Paper deals with properties of multiple-sensor hot-wire probes which has been developed in Fluid Dynamics dept. of the Institute of Thermomechanics of the Academy of Sciences of the Czech Republic for simultaneous measurement of the velocity and the concentration or the flow temperature.
Methods of Turbulence Research
Uruba, Václav
In the key-note lecture the current state of the turbulence research is presented. The problems connected with mathematical modelling are presented in details, relevance and perspective of experimental research is pointed out.
Velocity spectra and transition into turbulence in synthetic jets
Tesař, Václav
Paper investigates transition into turbulence in synthetic jet. The investigation was based on the quasi-similarity model with model parameter varying along the jet trajectory.The distance travelled from the nozzle to the location of the transition depends on the driving frequency – and hence on the size of the vortical structures, which were modelled by a sphetical vortex model. It appears the trasnsition takes placeat the distance equal to ~20 diameters of this model object.

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