Delayed detached eddy simulation of projectile flows

Jiaye Gan, Ge Cheng Zha

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


This paper conducts Delayed-Detached Eddy Simulation (DDES) of a guided projectile base flows. The inviscid fluxes are evaluated by the 5th order weighted essentially non-oscillatory (WENO) scheme with the low diffusion E-CUSP approximate Riemann solver and the viscous fluxes are calculated by second order central differencing. Time marching is performed with the second-order dual time stepping scheme and implicit unfactored Gauss-Seidel line iteration method in order to achieve high convergence rate. The accuracy of the DDES is validated with the force and moment experimental data. The DDES predicts the time averaged drag more accurately than the URANS and RANS. The primary difference of the drag prediction between the DDES and URANS is the pressure drag prediction in the base region. The DDES is demonstrated to be superior to the URANS for the projectile flow prediction due to more accurate base large vortex structures and pressure simulation.

Original languageEnglish (US)
Title of host publication33rd AIAA Applied Aerodynamics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103636
StatePublished - 2015
Event33rd AIAA Applied Aerodynamics Conference, 2015 - Dallas, United States
Duration: Jun 22 2015Jun 26 2015

Publication series

Name33rd AIAA Applied Aerodynamics Conference


Other33rd AIAA Applied Aerodynamics Conference, 2015
Country/TerritoryUnited States

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanical Engineering


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