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http://dx.doi.org/10.5139/IJASS.2017.18.1.70

Coupled Analysis of Thermo-Fluid-Flexible Multi-body Dynamics of a Two-Dimensional Engine Nozzle  

Eun, WonJong (Department of Mechanical and Aerospace Engineering, Seoul National University)
Kim, JaeWon (Korea Advanced Institute of Science and Technology)
Kwon, Oh-Joon (Korea Advanced Institute of Science and Technology)
Chung, Chanhoon (Korea Aerospace Industries)
Shin, Sang-Joon (Department of Mechanical and Aerospace Engineering, Seoul National University)
Bauchau, Olivier A. (University of Maryland)
Publication Information
International Journal of Aeronautical and Space Sciences / v.18, no.1, 2017 , pp. 70-81 More about this Journal
Abstract
Various components of an engine nozzle are modeled as flexible multi-body components that are operated under high temperature and pressure. In this paper, in order to predict complex behavior of an engine nozzle, thermo-fluid-flexible multi-body dynamics coupled analysis framework was developed. Temperature and pressure on the nozzle wall were obtained by the steady-state flow analysis for a two-dimensional nozzle. The pressure and temperature-dependent material properties were delivered to the flexible multi-body dynamics analysis. Then the deflection and strain distribution for a nozzle configuration was obtained. Heat conduction and thermal analyses were done using MSC.NASTRAN. The present framework was validated for a simple nozzle configuration by using a one-way coupled analysis. A two-way coupled analysis was also performed for the simple nozzle with an arbitrary joint clearance, and an asymmetric flow was observed. Finally, the total strain result for a realistic nozzle configuration was obtained using the one-way and two-way coupled analyses.
Keywords
Multi-body dynamics; Fluid- flexible multi-body dynamics coupled analysis; Coupled analysis framework;
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Times Cited By KSCI : 2  (Citation Analysis)
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