Related Experiment Video
Updated: May 16, 2026

Measuring Material Microstructure Under Flow Using 1-2 Plane Flow-Small Angle Neutron Scattering
Published on: February 6, 2014
Anisotropic flow in event-by-event ideal hydrodynamic simulations of √[s(NN)]=200 GeV Au+Au collisions
Fernando G Gardim1, Frédérique Grassi, Matthew Luzum
1Instituto de Física, Universidade de São Paulo, C. P. 66318, 05315-970, São Paulo-SP, Brazil.
Abstract:
We simulate top-energy Au+Au collisions using ideal hydrodynamics in order to make the first comparison to the complete set of midrapidity flow measurements made by the PHENIX Collaboration. A simultaneous calculation of v(2), v(3), v(4), and the first event-by-event calculation of quadrangular flow defined with respect to the v(2) event plane (v(4){Ψ(2)}) gives good agreement with measured values, including the dependence on both transverse momentum and centrality. This provides confirmation that the collision system is indeed well described as a quark-gluon plasma with an extremely small viscosity and that correlations are dominantly generated from collective effects. In addition, we present a prediction for v(5).
Related Concept Videos
Couette Flow
Bernoulli's Equation for Flow Along a Streamline
Bernoulli's Equation for Flow Normal to a Streamline
The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines. However, the...
Steady, Laminar Flow Between Parallel Plates
Uniform Depth Channel Flow
Eulerian and Lagrangian Flow Descriptions
The Eulerian method focuses on fixed points in space where fluid properties, such as velocity, pressure, and temperature, are observed as the fluid moves between these...

