Research
Aerospace, Vol. 2, No. 3, pp. 482–504, 2015. [LINK]
Wing Structural and Aerodynamic Analysis
This is my first project conducted in my graduate studies. The project specifically investigates the aerodynamic and structural analysis of a morphing aircraft. Back then, I was involved in a joint European project, named CHANGE (Combine morphing assessment using flight envelope data and mission based morphing prototype wing development). Our team involved in designing a trailing edge control surface of a morphing aircraft. By performing both structural and aerodynamic analyses, an appropriate material for morphing wing trailing edge, capable of cambering and decambering, was selected.
Aerodynamic Design Optimization with Mesh Deformation Technique
An supplementary work that I performed related to the first project is about the aerodynamic design optimization complemented by mesh deformation method. Specifically, I designed a novel method for mesh deformation based on spring analogy method. The method is called as ball-center spring mesh deformation technique. I coupled this technique with both CFD flow solver (SU2 CFD) and design optimization software (Phoenix Model Center). Using these combined modules, I performed a simple airfoil design optimization for several mission profiles.
AIAA Paper 2015-2612, 22nd AIAA Computational Fluid Dynamics Conference, Dallas, Texas, USA [LINK]
International Journal of Heat and Mass Transfer, Vol. 137, pp. 1088-1102, 2019 [LINK]
Catalytic Effect in Hypersonic Boundary Layer
My first published work during my Ph.D. study deals with the importance of the catalytic activity in heat transfer through boundary layer analysis. I improved the the famous catalytic heat transfer theory (Goulard's method) to consider the effect of multi-species mixture and difference recombination coefficient for both oxygen and nitrogen atoms. By doing that, an additional heat transfer owing to the individual recombination coefficient can be properly estimated.
Catalytic Assessment of SiC-Coated Surface through Heat Transfer Measurement
Based on the developed catalytic heat transfer theories, catalytic assessment for SiC-coated surface is investigated. The assessment was performed at the shock tube end-wall for different surface treatments (roughness and pre-heating). The heat transfer was measured via thin-film gauges attached on model at the shock tube end-wall.
From the measurement, the effect of roughness and pre-heating on heat transfer, and thus the apparent recombination coefficient is observed. To understand better the physical interaction behind this observation, a numerical finite-rate catalytic modeling is additionally performed.
International Journal of Heat and Mass Transfer, Vol. 143, 118510, 2019 [LINK]
The 2019 World Congress on Advances in Nano, Bio, Robotics, and Energy (ANBRE19), Jeju Island, Korea [LINK]
Molecular Dynamics Study for Atomic Recombination
To complement the macroscopic study dealing with the surface atomic recombination, a molecular dynamics study of the atomic recombination is performed. For a simple study, the oxygen recombination on a cristobalite surface is investigated for different temperature cases. The oxygen atoms are inserted periodically hitting the surface. The atomic insertion method follows the concept of Eley-Rideal recombination mechanism. When the results compared with the experimental data, agreement was found in high temperature case.