Modeling ablation problems with realistic conditions requires not only high fidelity numerical models of the thermal response of the material, but also accurate and efficient schemes for mesh motion. This study presents the development and verification of a three-dimensional mesh motion scheme for the Kentucky Aerothermodynamics and Thermal-response System solver. In one-dimensional geometries the mesh motion is done via a simple linear contraction algorithm, while in higher dimensional cases, displacement of the nodes is interpolated using the radial basis function approach. Various aspects of the mesh motion scheme in 2D/3D cases are discussed such as the restriction of node motion on interface planes and axis, as well as enforcing node motion to stay strictly within a plane or edge. Performance of the implemented algorithm is presented using the Ablation Workshop test cases. Additionally, two important constraints of mesh motion, such as mass loss error at the surface and the geometric conservation law are explored and discussed.
|Title of host publication||AIAA SciTech Forum 2022|
|State||Published - 2022|
|Event||AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States|
Duration: Jan 3 2022 → Jan 7 2022
|Name||AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022|
|Conference||AIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022|
|Period||1/3/22 → 1/7/22|
Bibliographical noteFunding Information:
The authors would like to recognize and show appreciation for the financial support provided by NASA Kentucky EPSCoR RA Award no. 80NSSC19M0144 (E. Stern technical monitor) and NASA EPSCoR R3 Award no. 80NSSC19M0084 (M. Barnhardt technical monitor).
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ASJC Scopus subject areas
- Aerospace Engineering