An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling

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

3 Citations (Scopus)

Abstract

A procedure to develop CFD-based reduced order models (ROMs) which capture the essence of an aerodynamic system while reducing the complexity of the computational model is introduced. The Volterra-based ROM is obtained using the derivative of unsteady aerodynamic step-response. Transient responses and Gaussian responses were calculated using ROM and compared with the CFD solver for validation of ROM approach. An Eigensystem Realization Algorithm is used to convert ROM unsteady aerodynamics into the LTI state space model. A reduction in the cost of the realization of the ROM kernel is obtained by the identification of the state-space model. Aeroelastic analysis is conducted using state space model. A typical section model has been used for validation. An aeroelastic analysis of 3D wing is also conducted at M=0.60. While highly optimized, the state-space model remains a decoupled system and has enough meaningful information about the nature of the aerodynamic system. The proposed approach is computationally efficient without loosing structural/aerodynamic nonlinearities.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
Pages5456-5474
Number of pages19
Volume7
StatePublished - 2004
EventCollect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum - Palm Springs, CA, United States
Duration: Apr 19 2004Apr 22 2004

Other

OtherCollect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum
CountryUnited States
CityPalm Springs, CA
Period4/19/044/22/04

Fingerprint

Aerodynamics
Computational fluid dynamics
Step response
Transient analysis
Identification (control systems)
Derivatives
Costs

ASJC Scopus subject areas

  • Architecture

Cite this

Munteanu, S., Rajadas, J., Nam, C., & Chattopadhyay, A. (2004). An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference (Vol. 7, pp. 5456-5474)

An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling. / Munteanu, Sorin; Rajadas, John; Nam, Changho; Chattopadhyay, Aditi.

Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7 2004. p. 5456-5474.

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

Munteanu, S, Rajadas, J, Nam, C & Chattopadhyay, A 2004, An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling. in Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. vol. 7, pp. 5456-5474, Collect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.; 12th AIAA/ASME/AHS Adapt. Struct. Conf.; 6th AIAA Non-Deterministic Approaches Forum; 5th AIAA Gossamer Spacecraft Forum, Palm Springs, CA, United States, 4/19/04.
Munteanu S, Rajadas J, Nam C, Chattopadhyay A. An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling. In Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7. 2004. p. 5456-5474
Munteanu, Sorin ; Rajadas, John ; Nam, Changho ; Chattopadhyay, Aditi. / An efficient approach for solving nonlinear aeroelastic phenomenon using reduced-order modeling. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Vol. 7 2004. pp. 5456-5474
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