A study presents a linear scaling law for the separation bubble size, which is adopted from Burggraf. The ariation of the GoÄrtler number with the Mach number, unit Reynolds number, ramp angle, and wall temperature is shown. Finally, the influence of wall temperature on the flow separation and GoÄrtler number is discussed. While several scaling laws regarding the length of the separation bubble are available in the literature, a simple relation proposed by Burggraf on the basis of asymptotic theory has been widely used and validated. To validate the scaling law and apply it for the calculation of the GoÄrtler number, direct numerical simulation (DNS) is employed to study well-separated hypersonic compression ramp flows.
ASJC Scopus subject areas
- Aerospace Engineering