Reaction plane from Lee-Yang Zeroes for elliptic flow analysis in ALICE

2011 ◽  
Vol 85 (7) ◽  
pp. 1069-1073
Author(s):  
N. van der Kolk ◽  
J. -Y. Ollitrault
Keyword(s):  
Flow Analysis ◽  
Elliptic Flow ◽  
Reaction Plane

scholarly journals Elliptic flow contribution to two-particle correlations at different orientations to the reaction plane

2004 ◽  
Vol 69 (2) ◽  
Author(s):  
J. Bielcikova ◽  
S. Esumi ◽  
K. Filimonov ◽  
S. Voloshin ◽  
J. P. Wurm
Keyword(s):  
Elliptic Flow ◽  
Reaction Plane ◽  
Particle Correlations

scholarly journals THE AZIMUTH STRUCTURE OF NUCLEAR COLLISIONS — I

2008 ◽  
Vol 17 (07) ◽  
pp. 1219-1272 ◽  
Author(s):  
THOMAS A. TRAINOR ◽  
DAVID T. KETTLER
Keyword(s):  
Fourier Transform ◽  
Data Analysis ◽  
Flow Analysis ◽  
Power Spectra ◽  
Reaction Plane ◽  
Correlation Measure ◽  
Directed Flow ◽  
Nuclear Collisions ◽  
The Fourier Transform ◽  
Autocorrelation Method

We describe azimuth structure commonly associated with elliptic and directed flow in the context of 2D angular autocorrelations for the purpose of precise separation of so-called nonflow (mainly minijets) from flow. We extend the Fourier-transform description of azimuth structure to include power spectra and autocorrelations related by the Wiener–Khintchine theorem. We analyze several examples of conventional flow analysis in that context and question the relevance of reaction plane estimation to flow analysis. We introduce the 2D angular autocorrelation with examples from data analysis and describe a simulation exercise which demonstrates precise separation of flow and nonflow using the 2D autocorrelation method. We show that an alternative correlation measure based on Pearson's normalized covariance provides a more intuitive measure of azimuth structure.

scholarly journals Elliptic flow analysis at RHIC with the Lee–Yang zeros method in a relativistic transport approach

2006 ◽  
Vol 32 (11) ◽  
pp. 2181-2186 ◽  
Author(s):  
Xianglei Zhu ◽  
Marcus Bleicher ◽  
Horst Stöcker
Keyword(s):  
Flow Analysis ◽  
Elliptic Flow ◽  
Transport Approach

scholarly journals Correlation functions and cumulants in elliptic flow analysis

2003 ◽  
Vol 717 (3-4) ◽  
pp. 249-267 ◽  
Author(s):  
Yuri V Kovchegov ◽  
Kirill L Tuchin
Keyword(s):  
Correlation Functions ◽  
Flow Analysis ◽  
Elliptic Flow

scholarly journals Elliptic flow analysis in Au+Au collisions atsNN=200GeV: Fluctuations vs non-flow effects

2005 ◽  
Vol 72 (6) ◽  
Author(s):  
Xianglei Zhu ◽  
Marcus Bleicher ◽  
Horst Stöcker
Keyword(s):  
Flow Analysis ◽  
Elliptic Flow ◽  
Flow Effects

ELLIPTIC FLOW SIMULATION AND ANALYSIS IN ALICE

2007 ◽  
Vol 16 (07n08) ◽  
pp. 2528-2534
Author(s):  
◽  
EMANUELE SIMILI
Keyword(s):  
Flow Analysis ◽  
Flow Simulation ◽  
Elliptic Flow ◽  
Charged Multiplicity ◽  
Flow Measurements ◽  
Event Plane ◽  
Plane Analysis ◽  
Analysis Package ◽  
Flow Effects ◽  
The Impact

Based on flow measurements at the SPS and RHIC, the expected values of elliptic flow and charged multiplicity have been extrapolated as a function of the impact parameter to LHC energy. Those predictions have been used as an input for ALICE simulation, to develop and test a flow analysis package for the ALICE environment. The Event Plane analysis has provided an estimate of the event plane resolution at the LHC and it has also been applied to Hijing events generated with no genuine elliptic flow. In this kind of environment it has been possible to study the effects on v2 from pure non-flow effects, and thus get an estimate of the systematics due to non-flow.

Production flow analysis

1963 ◽  
Vol 42 (12) ◽  
pp. 742 ◽  
Author(s):  
John L. Burbidge
Keyword(s):  
Flow Analysis ◽  
Production Flow

Component flow analysis — an effective approach to production systems' design

1972 ◽  
Vol 51 (5) ◽  
pp. 165 ◽  
Author(s):  
I.G.K. Ei-Essawy ◽  
J. Torrance
Keyword(s):  
Production Systems ◽  
Flow Analysis ◽  
Systems Design

Review on the aerodynamics of intermediate compressor duct

2020 ◽  
Vol 14 (4) ◽  
pp. 7446-7468
Author(s):  
Manish Sharma ◽  
Beena D. Baloni
Keyword(s):  
High Pressure ◽  
Pressure Loss ◽  
Flow Analysis ◽  
Outer Wall ◽  
Optimization Techniques ◽  
Optimum Pressure ◽  
Research Areas ◽  
Static Pressure Distribution ◽  
High Pressure Compressor ◽  
Pressure Compressor

In a turbofan engine, the air is brought from the low to the high-pressure compressor through an intermediate compressor duct. Weight and design space limitations impel to its design as an S-shaped. Despite it, the intermediate duct has to guide the flow carefully to the high-pressure compressor without disturbances and flow separations hence, flow analysis within the duct has been attractive to the researchers ever since its inception. Consequently, a number of researchers and experimentalists from the aerospace industry could not keep themselves away from this research. Further demand for increasing by-pass ratio will change the shape and weight of the duct that uplift encourages them to continue research in this field. Innumerable studies related to S-shaped duct have proven that its performance depends on many factors like curvature, upstream compressor’s vortices, swirl, insertion of struts, geometrical aspects, Mach number and many more. The application of flow control devices, wall shape optimization techniques, and integrated concepts lead a better system performance and shorten the duct length.  This review paper is an endeavor to encapsulate all the above aspects and finally, it can be concluded that the intermediate duct is a key component to keep the overall weight and specific fuel consumption low. The shape and curvature of the duct significantly affect the pressure distortion. The wall static pressure distribution along the inner wall significantly higher than that of the outer wall. Duct pressure loss enhances with the aggressive design of duct, incursion of struts, thick inlet boundary layer and higher swirl at the inlet. Thus, one should focus on research areas for better aerodynamic effects of the above parameters which give duct design with optimum pressure loss and non-uniformity within the duct.

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