Pulsed liquid jet generated by pulse multiplication technique

0398574 - ÚGN 2014 RIV CZ eng C - Conference Paper (international conference)
Dvorský, R. - Sitek, Libor - Sochor, T.
Pulsed liquid jet generated by pulse multiplication technique.
Vodní paprsek 2013 - výzkum, vývoj, aplikace. Sborník přednášek konference o technologii vodního paprsku. Ostrava: Ústav geoniky AV ČR, 2013 - (Sitek, L.; Klichová, D.), s. 25-45. ISBN 978-80-86407-43-2.
[Vodní paprsek 2013 - výzkum, vývoj, aplikace. Soláň, Karolinka (CZ), 22.10.2013-24.10.2013]
R&D Projects: GA MŠMT ED2.1.00/03.0082
Grant - others:GA MŠk(CZ) ED0040/01/01
Institutional support: RVO:68145535
Keywords : pulse liquid jet * water hammer effect * pulse intensifier * high-pressure pulses
Subject RIV: JQ - Machines ; Tools

First theoretical papers summarizing the high mechanical energy cumulation when high-speed drops impacting the solid surface as a result of the water hammer effect have been known since 1960’s. Heymann has demonstrated that pressure maximum in the impact of a spherical drop of a liquid is several times higher than the presupposed maximum for the classical water hammer effect. The latter maximum pressure itself exceeds the mere stagnation pressure of the continuous jet many times hereat. When developing devices for pulse jet generation a new generalization of the classical water hammer theory for high pressures has been implemented. Based on this the new patented principle of “pulse multiplication” has been formulated. The pulse multiplier is the source of high-pressure pulses with 100% depth of modulation of liquid jet discharge velocity that allows increasing the jet disintegration effect significantly without the abrasive material application.
Permanent Link: http://hdl.handle.net/11104/0226079