An Empirical Model for Vane-Type Vortex Generators in a Navier-Stokes Code

Dudek, Julianne C.

doi:10.2514/6.2005-1003

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…Meanwhile, lots of experiment data was published [6]. In 2006, Julianne simulated straight vane-type VGs using the relationship developed by Bruce to calculate the strength of vortices [7]. In addition, Christonpher et al put forward a model of large scale VGs, and he assigned tangential and axial velocities in a cylinder region to realize the simulation [8] in 2009.…”

Section: Introductionmentioning

confidence: 98%

Modeling of delta-wing type vortex generators

Zhang

Yang

et al. 2011

Sci. China Technol. Sci.

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A numerical model of delta-wing type vortex generator was developed in two steps. The first step was to obtain a parameterized model of the shedding vortex based on delta-wing theory, which relates the geometry parameters and flow field parameters to the strength of shedding vortex which directly decides the source term. In the second step, a method was proposed to add source terms into the flow control equations so that the shedding vortex could be simulated numerically. As soon as the numerical model was completed, two cases: One for a plate and another for an airfoil segment were investigated for test. Comparison showed that the flow field structure and aerodynamic performance agreed well with those obtained from cases with real vortex generators. vortex generators, modeling, source term Citation:

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Section: Introductionmentioning

confidence: 98%

Modeling of delta-wing type vortex generators

Zhang

Yang

et al. 2011

Sci. China Technol. Sci.

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“…Baseline flow (with no flow control) in serpentine inlet or S-shaped ducts have been extensively studied both experimentally and numerically. 10,19,34,35 Furthermore, many studies have been carried out to investigate the effectiveness of flow control in serpentine inlet ducts using both passive control techniques such as vortex generators, 3,5,6,18,22 as well as active flow control based on steady or unsteady blowing or suction such as vortex generator jets or tangential control jets. 4,26,[31][32][33] Recently similar types of techniques have been applied and studied both experimentally and numerically for boundary-layer-ingesting (S-duct) inlets.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Flow Control in a Serpentine Duct

Sahni

Olles

Jansen

2009

47th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

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Three dimensional numerical computations of flow control within an aggressive serpentine inlet duct (L/D = 1.5) at a Mach number of M = 0.45 are presented. Two flow configurations including baseline flow (no flow control) and active flow control via steady, tangential control jet are considered. A stabilized finite element method is employed to perform turbulence simulations 16 using two variants of the Spalart-Allmaras (S-A) model; the original S-A one-equation model 29 in an unsteady Reynold-averaged Navier-Stokes simulation (URANSS) and a hybrid S-A model 30 in a Detached eddy simulation (DES). Furthermore, computations are performed using adaptive meshing techniques developed for unstructured grids including boundary layer elements 24 to make such flow simulations practically feasible and efficient. Numerical results using two turbulence models are compared with experimental measurements 33 of static and total pressure for the baseline flow whereas numerical results based on URANSS and DES are compared in the case of flow control. Results obtained from URANSS using the original S-A model fail to predict key aspects of this complex flow with adverse pressure gradient and flow separation, whereas DES substantially improves the prediction.

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