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Actuators 2019, 8(1), 16; https://doi.org/10.3390/act8010016

Correction
Correction: Persoons, T.; Cressall, R.; Alimohammadi, S. Validating a Reduced-Order Model for Synthetic Jet Actuators Using CFD and Experimental Data. Actuators 2018, 7, 67
1
School of Engineering, Parsons Building, Trinity College, Dublin 2, Ireland
2
Department of Aerospace and Mechanical Engineering, University of Notre Dame, South Bend, IN 46556, USA
3
Mechanical & Design Engineering School, Dublin Institute of Technology, Dublin 2, Ireland
*
Author to whom correspondence should be addressed.
Received: 14 February 2019 / Accepted: 14 February 2019 / Published: 19 February 2019
The authors wish to make the following corrections to this paper [1] in Section 2.2, Equation (19). The authors wish to replace:
Alternatively, the following equation is an empirical fit for β that is valid for 1 < a < 50 and k A n 1 / 2 < 0.886 with a mean error of 1.7% and a maximum error of 5.9%:
β 0.34064 + 6.6771 × 10 2   k A n 1 / 2 + 1.5318 × 10 4   a 2 + 2.7233 × 10 8   a 4 + 0.78343 exp ( 1.7384 × 10 2   a )
While Equation (19) is only valid for aspect ratios not exceeding 50, the value of β from Equations (16)–(18) in the limit for infinite aspect ratio ( a ) is zero.
with:
Alternatively, the following equation is an empirical fit for β that is valid for any aspect ratio a 1 and k A n 1 / 2 < 0.886 , with a mean error of 1.9% and a maximum error of 7.9% for 1 < a < 50 :
β 0.5316 exp ( 0.181   a 0.44 ) 0.05247   k A n 1 / 2
In the limit for infinite aspect ratio ( a ), the low-frequency approximation of β obtained from Equations (16)–(19) is zero.
The authors would like to apologize for any inconvenience caused to the readers by these changes.

Reference

  1. Persoons, T.; Cressall, R.; Alimohammadi, S. Validating a Reduced-Order Model for Synthetic Jet Actuators Using CFD and Experimental Data. Actuators 2018, 7, 67. [Google Scholar] [CrossRef]

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