Publication detail

Hydraulic Descaling Improvement - Findings of Jet Structure on Water Hammer Effect

RAUDENSKÝ, M. HORSKÝ, J. HORÁK, A. POHANKA, J. KOTRBÁČEK, P.

Czech title

Zdokonalení hydraulického odstraňování okují - výsledky zkoumání struktury proudu na efekt vodního kladiva

English title

Hydraulic Descaling Improvement - Findings of Jet Structure on Water Hammer Effect

Type

journal article - other

Language

en

Original abstract

The latest research in descaling brought new findings about dynamic features of the process. The continuous water jet formed by a descaling nozzle has complicated and variable qualities not visible to the naked eye. A water jet is formed by clusters of droplets moving at high velocity. The theory of the "water hammer" must be used when the descaling process is studied. Results show that in the impact area, one can observe pressure peaks of several hundred Mpa's, lasting microseconds per peak. This finding can modify most existing concepts of descaling and the impact on current theory is discussed. Structure of the descaling jet can have equally as much importance as impact pressure.

Czech abstract

Nejnovější výzkum v oblasti odstraňování okují představil nová zjištění o dynamických rysech procesu odkujování. Plynulý vodní proud, který formuje tryska má komlikovanou a různorodou kvalitu ostřiku , nerozeznatelnou pro lidské oko. Proud vody je tvořen shluky kapek pohybujících se velkou rychlostí. Teorie tzv. " vodního kladiva" musí být použita pro studium odstarňování okují. výsledky ukazují, že v místě dopadu je možné sledovat vrcholy tlaku o hodnotách několika stovek Mpa, které trvajíněkolik mikrosekund pro vrchol. toto zjištění může změnit už existující koncepty odstraňování.

English abstract

The latest research in descaling brought new findings about dynamic features of the process. The continuous water jet formed by a descaling nozzle has complicated and variable qualities not visible to the naked eye. A water jet is formed by clusters of droplets moving at high velocity. The theory of the "water hammer" must be used when the descaling process is studied. Results show that in the impact area, one can observe pressure peaks of several hundred Mpa's, lasting microseconds per peak. This finding can modify most existing concepts of descaling and the impact on current theory is discussed. Structure of the descaling jet can have equally as much importance as impact pressure.

Keywords in Czech

odstaňování okují

Keywords in English

Hydraulic Descaling, Water Hammer Effect

RIV year

2007

Released

28.02.2007

Publisher

EDPscience

Location

Francie

ISSN

1156-3141

Journal

Revue de Métallurgie

Volume

2

Number

104

Pages from–to

84–90

Pages count

6

BIBTEX


@article{BUT45071,
  author="Miroslav {Raudenský} and Jaroslav {Horský} and Aleš {Horák} and Petr {Kotrbáček} and Jan {Pohanka},
  title="Hydraulic Descaling Improvement – Findings of Jet Structure on Water Hammer Effect",
  journal="Revue de Métallurgie",
  year="2007",
  volume="2",
  number="104",
  month="February",
  pages="84--90",
  publisher="EDPscience",
  address="Francie",
  issn="1156-3141"
}