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AN ACCURATE AND EFFICIENT CALCULATION OF HIGH ENTHALPY FLOWS USING A HIGH ORDER NEW LIMITING PROCESS

  • Noh, Sung-Jun (DEPARTMENT OF MECHANICAL AND AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY) ;
  • Lee, Kyung-Rock (DEPARTMENT OF MECHANICAL AND AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY) ;
  • Park, Jung-Ho (DEPARTMENT OF MECHANICAL AND AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY) ;
  • Kim, Kyu-Hong (DEPARTMENT OF MECHANICAL AND AEROSPACE ENGINEERING, SEOUL NATIONAL UNIVERSITY)
  • Received : 2011.03.22
  • Published : 2011.03.25

Abstract

Calculation of accurate wall heat flux for high enthalpy flows requires a dense grid system, which leads to significantly large computational time. A high-order scheme can improve the efficiency of calculation because wall heat flux can be obtained accurately even with a relatively coarse grid system. However, conventional high order schemes have some drawbacks such as oscillations near a discontinuity and instability in multi-dimensional problem. To resolve these problems, enhanced Multi-dimensional Limiting Process(e-MLP) was applied as a high-order scheme. It could provide robust and accurate solutions with high order accuracy in calculation of high enthalpy flows within a short time. We could confirm the efficiency of the high order e-MLP scheme through grid convergence tests with different grid densities in a hypersonic blunt nose problem.

Acknowledgement

Supported by : Korea Institute of Science and Technology Information, National Research Foundation of Korea

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