摘要
对Navier-Stokes方程进行雷诺平均后出现的各关联项建模,通过新的描述湍流脉动耗散的变量构造耗散方程,建立k-ζ两方程湍流模型,研究了k-ζ两方程湍流模型的数值求解方法。通过求解有限体积法离散的RANS流动控制方程,数值模拟了平板,翼型,机翼等不同湍流流场,并与理论解、实验值及SSTk-ω模型进行比较,全面考察了k-ζ两方程湍流模型在湍流流场计算中的准确性及适用性。数值计算表明,通过建立新的耗散方程研究湍流的方法是可行的,目前的k-ζ两方程湍流模型具有良好的数值稳定性,并且计算结果要优于或者至少与传统的两方程模型精度相当。
Aim.D.B.Robinson applied his new turbulence k-ξmodel in Refs.2,4 and 5.Having searched unsuccessfully for technical details,we explain how we think his new model should be applied to simulating turbulent flow and then we discuss the results obtained.Sections 2 and 3 of the full paper explain how his new model should be applied;eq.(4) in section 2 and eq.(10) in section 3 are the most important.Section 4 gives four numerical examples.The first example is flat plate,for which the theoretical solution is avail...
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2009年第4期466-470,共5页
Journal of Northwestern Polytechnical University
