Abstract
A non-Newtonian fluid Direct Numerical Simulation (DNS) tool is developed to predict the reduction of turbulent skin friction drag observed when the fluid is a dilute polymer solution. Results obtained with this tool are to be used to develop a Reynolds Averaged Navier Stokes (RANS) design tool that will allow the design of ship hulls and other external bodies that benefit in a predictable way from polymer-induced drag reduction. The FENE-P dumbbell model for viscoelastic fluids is used to provide the non-Newtonian stresses. The approach is tested with a turbulent flat-plate boundary layer case (Reδ* =1000). The inflow data is generated by a recycling method extended to include the polymer stresses. Results are presented for a coarse grid case in which the turbulence is not completely resolved and consist primarily of comparisons between Newtonian and polymer ocean turbulence characteristics, such as turbulence intensity and velocity profiles. Although the predicted drag is lower for the polymer solution case, it is not as significant as experimental observation. This discrepancy is attributed to the coarseness of the simulation.
| Original language | English (US) |
|---|---|
| Pages | 335-342 |
| Number of pages | 8 |
| DOIs | |
| State | Published - 2002 |
| Event | Proceedings of the 21st International Conference on Offshore Mechanics and Arctic Engineering (OMAE) - Oslo, Norway Duration: Jun 23 2002 → Jun 28 2002 |
Other
| Other | Proceedings of the 21st International Conference on Offshore Mechanics and Arctic Engineering (OMAE) |
|---|---|
| Country/Territory | Norway |
| City | Oslo |
| Period | 6/23/02 → 6/28/02 |
All Science Journal Classification (ASJC) codes
- Ocean Engineering
- Energy Engineering and Power Technology
- Mechanical Engineering