Direct numerical simulation of the thermal effects of plasmas on turbulent flows

Shankar Ghosh, Krishnan Mahesh

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

The thermal effects of plasmas on Isotropic turbulence are studied using direct numerical simulations. The temperature ratio of the plasma region to the background region is moderate. Two idealizations of the plasma are considered - spherical and conical. The conical idealization is found preferable in that it approximates the tear-drop shape of the plasma region that is observed experimentally, and produces baroclinic vorticity. The variation of the magnitude of the vorticity with temperature ratio and size of plasma region is examined. A blast wave followed by a region of expansion propagates normal to the axis of the plasma region. The turbulence is observed to be suppressed in the core of the plasma, presumably due to bulk expansion.

Original languageEnglish (US)
Pages6955-6966
Number of pages12
StatePublished - Dec 1 2005
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005

Conference

Conference43rd AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/10/051/13/05

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    Ghosh, S., & Mahesh, K. (2005). Direct numerical simulation of the thermal effects of plasmas on turbulent flows. 6955-6966. Paper presented at 43rd AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States.