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Vícenásobné stísněné impaktní proudy s příčným odvodem tekutiny
Dvořák, Rudolf ; Trávníček, Zdeněk ; Vogel, J.
Confined impinging multiple gaseous jets have extensive technological applications, being used for drying, heating or cooling (as eg. internal cooling of gas turbine blades). Their applicability, cooling efficiency, etc. depend heavily on the way the fluid is withdrawn from the exposed area. Good CFD results are rare, and numerous experimental results, as well as any generalization of the empirical findings require a well founded knowledge of the flow structure. The paper reports on the results achieved so far in the investigation of this problem.
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Jet flowing into a cavity
Dvořák, Rudolf ; Trávníček, Zdeněk ; Vogel, J.
The flow field in a half-open space (cavity) generated by an impinging jet and a fountain jet of the spent fluid has been described. Results of numerical modelling (based on FLUENT) are presented, and a twodimensional test section for flow visualization and PIV measurements manufactured in the Institute of Thermomechanics has also been described.
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