Numerical Simulation and Experimental Study of Three-Dimensional Density-Stratified Flow
Abstract
The numerical relationship between vertical turbulence P/S σ tz turbulence and stratification feature parameters is established by analyzing the flux expression of turbulent stress / flux algebraic mode. Corresponding density change rate parameters reflecting changes in temperature and sediment concentration are introduced to correct the vertical diffusion coefficient of turbulent. A three-dimensional turbulence model with multi-phase coupling of water flow, temperature and sediment is established on this basis. The established standard Johnson water channel model is adopted for experimental study on the density-stratified flow model of temperature and sediment concentration and the experimental results are compared with the calculation results of three-dimensional density-stratified flow mathematical model.
- Publication:
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Materials Science and Engineering Conference Series
- Pub Date:
- February 2019
- DOI:
- 10.1088/1757-899X/472/1/012080
- Bibcode:
- 2019MS&E..472a2080Y