ALE-VMS formulation for stratified turbulent incompressible flows with applications

作者：Bazilevs Y^*; Korobenko A; Yan J; Pal A; Gohari S M I; Sarkar S

来源：Mathematical Models and Methods in Applied Sciences, 2015, 25(12): 2349-2375.

DOI：10.1142/S0218202515400114

• ALE-VMS
• stratified flow
• turbulence
• internal gravity waves
• self-propelled wake
• atmospheric boundary layer
• wind turbine

A numerical formulation for incompressible flows with stable stratification is developed using the framework of variational multiscale methods. In the proposed formulation, both density and temperature stratification are handled in a unified manner. The formulation is augmented with weakly-enforced essential boundary conditions and is suitable for applications involving moving domains, such as fluid-structure interaction. The methodology is tested using three numerical examples ranging from flow-physics benchmarks to a simulation of a full-scale offshore wind-turbine rotor spinning inside an atmospheric boundary layer. Good agreement is achieved with experimental and computational results reported by other researchers. The wind-turbine rotor simulation shows that flow stratification has a strong influence on the dynamic rotor thrust and torque loads.

• 出版日期2015-11