Statistical Analysis of High-Order Moments from Direct Numerical Simulation of a Turbulent Boundary Layer

High-order zero-pressure-gradient turbulent boundary layer statistics are important for turbulence modeling efforts and insight into the nature of turbulent flow. In this thesis, a complete database of third-, fourth-, and fifth-order central velocity moments is presented. The statistics were extracted from flow field data from a finely resolved direct numerical simulation by the Universidad Politecnica de Madrid Fluid Dynamics Group. Fourth-order moment interrelations formed by invoking Millionshtchikov's hypothesis of quasinormality and fifth-order moment interrelations formed by utilizing truncated Gram-Charlier series expansions of the marginals of the joint probability density function of the flow are presented. Reasonable agreement was found for most of the moment interrelations. Flow visualizations using the Q criterion are also presented.

Name thesis:degree_name

Mechanical Engineering

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Mechanical Engineering

Year

2014

Author dc:creator

• Kaiser, Bryan

Contributors dc:contributor

• Poroseva, Svetlana
• Truman, Randall
• Vorobieff, Peter
• Appelo, Daniel

• turbulence
• boundary layers
• turbulent structures
• moderate Reynolds number
• high-order moments

Language dc:language

English

Identifier

https://digitalrepository.unm.edu/me_etds/86

OAI identifier oai:identifier

oai:digitalrepository.unm.edu:me_etds-1085