Simple Models of Zero-Net Mass-Flux Jets for Flow Control Simulations
Publication Type:
Journal
Authors:
Co-Authors:
Raju, R., Aram, E., and Mittal, R.
Year Published:
2009
Abstract:
Although computational fluid dynamics is well suited for modeling the dynamics of zeronet mass-flux (ZNMF) actuators, the computational costs associated with large-scale
flow control simulations necessitate the use of simple models for these devices. A new model based on only the slot of ZNMF jets in grazing flows is proposed. A study of the
dimensionless parameters governing the ZNMF jet in grazing flow is conducted, and the performance of the model is assessed in terms of the vortex dynamics and the mean
integral quantities that define characteristics of the ZNMF jet. A comparison with full cavity simulations as well as the often-used sinusoidal, plug-flow model indicates that
the new model provides a good prediction of the jet outflow. In addition, the fidelity of the model has also been explored for a canonical separated flow. Results show that the
model is able to predict the effect of the jet on the separation bubble much more accurately than the conventional plug-flow model.
Journal:
International Journal of Flow Control
Volume:
1
Issue:
3
Pagination:
179-197
ISSN:
Short Title:
Date Published:
9/1/2009