Numerical investigation of turbulent separation control using periodic disturbances

Daniel M. Israel, Hermann F Fasel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The new Flow Simulation Methodology (FSM) proposed by Speziale (1997) is applied to the separation control experiments of Seifert and Pack (1999). By smoothly ramping between RANS and LES based on the local flow conditions, the FSM allows simulations which capture the unsteady nature of the shear layer without requiring LES resolution in the boundary layer. This makes the FSM ideal for investigations of Active Flow Control (AFC). In the experiments a model simulating the upper surface of a 20% thick airfoil was mounted on the side of a wind tunnel. The flow over this airfoil separates at ~ 64% chord if no control is applied. This model was used to investigate sweep and compressibility effects over a range of Reynolds numbers. The goal of our ongoing research is to implement and validate the FSM in an high-order accurate CFD code capable of simulating these experiments. In this paper we demonstrate the FSM for the experimental geometry with a fully turbulent boundary layer at the domain inflow. The calculations show that the FSM does allow the formation of unsteady structures in the separated region.

Original languageEnglish (US)
Title of host publication40th AIAA Aerospace Sciences Meeting and Exhibit
StatePublished - 2002
Event40th AIAA Aerospace Sciences Meeting and Exhibit 2002 - Reno, NV, United States
Duration: Jan 14 2002Jan 17 2002

Other

Other40th AIAA Aerospace Sciences Meeting and Exhibit 2002
CountryUnited States
CityReno, NV
Period1/14/021/17/02

Fingerprint

Flow simulation
disturbances
disturbance
methodology
simulation
Airfoils
Boundary layers
airfoils
sweep effect
Experiments
Compressibility
Flow control
turbulent boundary layer
compressibility effects
Wind tunnels
flow control
experiment
Computational fluid dynamics
Reynolds number
compressibility

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Israel, D. M., & Fasel, H. F. (2002). Numerical investigation of turbulent separation control using periodic disturbances. In 40th AIAA Aerospace Sciences Meeting and Exhibit

Numerical investigation of turbulent separation control using periodic disturbances. / Israel, Daniel M.; Fasel, Hermann F.

40th AIAA Aerospace Sciences Meeting and Exhibit. 2002.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Israel, DM & Fasel, HF 2002, Numerical investigation of turbulent separation control using periodic disturbances. in 40th AIAA Aerospace Sciences Meeting and Exhibit. 40th AIAA Aerospace Sciences Meeting and Exhibit 2002, Reno, NV, United States, 1/14/02.
Israel DM, Fasel HF. Numerical investigation of turbulent separation control using periodic disturbances. In 40th AIAA Aerospace Sciences Meeting and Exhibit. 2002
Israel, Daniel M. ; Fasel, Hermann F. / Numerical investigation of turbulent separation control using periodic disturbances. 40th AIAA Aerospace Sciences Meeting and Exhibit. 2002.
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