Second-Order, Turbulent Modeling Applied to Momentumless Wakes in Stratified Fluids
Abstract
The technique of second-order closure for turbulence modeling is used to treat the growth and decay of turbulence, and the generation of internal waves behind a submarine moving at constant velocity through a stratified ocean. A computer model based on the solution of five partial differential equations and approximating nine others is generated. Required model coefficients are obtained by comparison with data obtained from laboratory flows and the atmospheric surface layer. The model is verified by comparison with Naudascher's wake data in the limit of vanishing stratification; with Wu's observations in the limit of starting with a uniformly mixed region in a strongly stratified fluid; and with Hartman and Lewis's analytical predictions in the limit of a small perturbation to the ambient linear density gradient and vanishing turbulence.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1973
- Accession Number
- AD0771725
Entities
People
- Coleman Dup. Donaldson
- W. S. Teske