The Analysis of Direct Numerical Simulation and Experiment in Critical Point of Transitional Flow

Abstract:

In order to study the lower critical point in transitional area of pipe, we used the method of direct numerical simulation to simulate fluid flow and contrasted it with experiment. The result showed that the flow state is close to laminar. Along the pipe axis, the change of pressure is not obviously. The changing rate of axial velocity U near wall region was significantly greater than in the mainstream area, it proved the important role of viscous force.

• Periodical: Advanced Materials Research (Volume 1046)
• Pages: 196-199
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1046.196
• Online since: October 2014
• Authors: Jun Wang*, Guang Sheng Du, Yong Hui Liu
• Keywords: Axial Velocity, DNS, Pressure Variation, Transitional Flow

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