نتایج جستجو برای: micro jets

تعداد نتایج: 129737  

2007
Stefan Meuser Bernd Nellen Beate Stockhausen

Inclusive particle production in quark and gluon jets classiied via energy-ordering has been investigated in 3-jet events at the Z 0 pole. The events were selected using various jet nding algorithms. The jets with higher energies were assumed to be quark jets and the jet with lowest energy to be the gluon jet. Using the same jet nder a similar energy dependence of jet purities has been found fo...

2008
Noam Soker

I propose a model for the formation of slow-massive-wide (SMW) jets by accretion disks around compact objects. This study is motivated by claims for the existence of SMW jets in some astrophysical objects such as in planetary nebulae (PNs) and in some active galactic nuclei in galaxies and in cooling flow clusters. In this model the energy still comes from accretion onto a compact object. The a...

Journal: :civil engineering infrastructures journal 0
mitra javan 1 school of civil engineering the university of razi kermanshah, tagh bostan iran afshin eghbalzadeh school of civil engineering the university of razi kermanshah, tagh bostan iran masoud montazeri namin school of civil engineering the university of tehran tehran, 16 azar st., enghelab ave. iran

wall-jet flow is an important flow field in hydraulic engineering, and its applications include flow from the bottom outlet of dams and sluice gates. in this paper, the plane turbulent wall jet in shallow tailwater is simulated by solving the reynolds averaged navier-stokes equations using the standard  turbulence closure model. this study aims to explore the ability of a time splitting method ...

2006
Thomas P. Krichbaum I. Agudo A. Witzel

Compact galactic and extragalactic radio sources can be imaged with an unsurpassed angular resolution of a few ten micro-arcseconds, adopting the observing technique of global millimeter VLBI. Here we present the Global Millimeter VLBI Array (GMVA) and discuss its present performance. For individual and partially archetypical radio sources with prominent VLBI jets (e.g. 3C 120, Cygnus A, M 87, ...

Journal: :Symposium - International Astronomical Union 2001

Journal: :Journal of physics 2021

Abstract The NEWA ALEX17 experiment was conducted with the objective of characterizing wind conditions upstream Alaiz Test Site for validation flow models. From intensive operational period, a case study has been selected Wakebench benchmark consisting four consecutive days relatively persistent winds from North. is centered around 118-m mast at site and six additional masts located along valle...

Journal: :Journal of Petroleum Exploration and Production Technology 2021

Abstract Radial jet drilling (RJD) technology has been applied to enhance the recovery of difficult-to-produce reserves by multiple horizontal micro-holes. The micro-hole length drilled high-pressure water jets is vital importance for oil and gas effect usually tens meters long applications in maturing fields China. are generated orifices nozzle generally. Many studies focused on improving self...

2014
M. Mortazavi V. Le Chenadec A. Mani

Bubble generation is a ubiquitous and complex phenomenon occurring as a result of non-linear behavior of the free surfaces. Plunging breakers, spilling breakers and plunging jets are just a few scenarios where bubble generation occurs. Due to its complexity and our lack of complete understanding of this phenomenon, the models developed in the literature are far from being predictive (Moraga et ...

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