Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Jan Uher"'
Publikováno v:
Volume 9: Oil and Gas Applications; Organic Rankine Cycle Power Systems; Steam Turbine.
This paper focuses on the influence of shaft labyrinth seal flow on full stage performance. Experimental data are studied, expected design conditions and experimental results are compared and discussed and a losses breakdown for the design procedure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1303cf1ea3a84a5a6e471e1b4acced9
https://doi.org/10.1115/gt2020-14741
https://doi.org/10.1115/gt2020-14741
Publikováno v:
Volume 2B: Turbomachinery.
they are derived from real steam turbine stages designed in DSPW. The computations simulate multistage configuration and real steam is considered as the working fluid. CFD computations were performed in the commercial software ANSYS CFX. Each configu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64d4ca23abb9e416a6a6757645c39567
https://doi.org/10.1115/gt2019-90726
https://doi.org/10.1115/gt2019-90726
Publikováno v:
18TH CONFERENCE OF POWER SYSTEM ENGINEERING, THERMODYNAMICS AND FLUID MECHANICS.
This contribution deals with an experimental study of an influence of a purge flow caused by a shaft labyrinth seal in combination with various reaction of a steam turbine stage. Effects of degree of reaction on shrouded rotor sealing flow are also d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::591d07435529edcd2f2310d3cbc43593
https://doi.org/10.1063/1.5138627
https://doi.org/10.1063/1.5138627
Autor:
Jan Uher, Jiri Hruska
Publikováno v:
AIP Conference Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51ec28d2f5149259f75e84d8a7ccd3e8
https://doi.org/10.1063/1.5081656
https://doi.org/10.1063/1.5081656
Publikováno v:
AIP Conference Proceedings.
This article is focused on the calculation of heat flux through a calorimeter wall. The stainless steel calorimeter is considered to be submerged into a molten metal, specifically a molten stainless steel. The main objective of the investigation is t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddb9ace95a318979207abdc37b405571
https://doi.org/10.1063/1.5081638
https://doi.org/10.1063/1.5081638
Autor:
Jan Uher, Lukáš Kanta
Publikováno v:
AIP Conference Proceedings.
The effort to make calibration measurement of mass flow through a nozzle was not satisfying. Traversing across the pipe radius with Pitot probe was done. The presence of overshoot behind the bend in the pipe was found. The overshoot led to an asymmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c58b02cc97029157f025975e53fc948
https://doi.org/10.1063/1.5004379
https://doi.org/10.1063/1.5004379
Autor:
Radek Škach, Jan Uher
Publikováno v:
AIP Conference Proceedings.
This paper deals with the design process of special nozzle blades for spiral inlets. Spiral inlets are used for the first stages of high pressure and intermediate pressure steam turbines with both reaction and impulse blades when throttling or slidin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc8a724c45b646ee1977358042ebf8bf
https://doi.org/10.1063/1.5004372
https://doi.org/10.1063/1.5004372
Autor:
Jan Uher
Publikováno v:
AIP Conference Proceedings.
This article explains fundamental origins of the lift force on a curved profile located in the flow. There is a discussion about the most popular, yet misleading explanation of the lift force. For evaluation of the lift force several approaches are a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b7a15cd12a8db9f7d5d6c8835c50404
https://doi.org/10.1063/1.5004380
https://doi.org/10.1063/1.5004380
Publikováno v:
EPJ Web of Conferences, Vol 213, p 02014 (2019)
We present a educational poster supporting the subject „Mechanics of fluids I“, which the students evaluate to be difficult mainly due to abstractness. Our goal is to show in vivo the behavior, especially the non-linearity, of various flows trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::745979f865723120b2cca1a10822a4ef
https://doi.org/10.1051/epjconf/201921302014
https://doi.org/10.1051/epjconf/201921302014
Publikováno v:
Fertility and sterility. 54(2)
Functional inadequacy of the fallopian tube cannot be adequately diagnosed by classical tubal patency tests. A new method using novel ova surrogates, microspheres transport test, is designed to diagnose dysfunctional tubal sterility. Biodegradable te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e2e717e0c3d189e1d671543f678ed5e
https://pubmed.ncbi.nlm.nih.gov/2143148
https://pubmed.ncbi.nlm.nih.gov/2143148