Table of Contents Author Guidelines Submit a Manuscript
International Journal of Aerospace Engineering
Volume 2016, Article ID 5740435, 5 pages
http://dx.doi.org/10.1155/2016/5740435
Research Article

Numerical Investigation of Shock Wave Diffraction over a Sphere Placed in a Shock Tube

1Moscow Aviation Institute, National Research University, Volokolamskoe Shosse 4, Moscow 125993, Russia
2Department of Mechanical Engineering, Ben-Gurion University of the Negev, 841050 Beer Sheva, Israel
3Peter the Great St. Petersburg Polytechnic University, Saint Petersburg 195251, Russia

Received 16 December 2015; Revised 21 April 2016; Accepted 19 June 2016

Academic Editor: Mohamed Gad-el-Hak

Copyright © 2016 Sergey Martyushov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

For evaluating the motion of a solid body in a gaseous medium, one has to know the drag constant of the body. It is therefore not surprising that this subject was extensively investigated in the past. While accurate knowledge is available for the drag coefficient of a sphere in a steady flow condition, the case where the flow is time dependent is still under investigation. In the present work the drag coefficient of a sphere placed in a shock tube is evaluated numerically. For checking the validity of the used flow model and its numerical solution, the present numerical results are compared with available experimental findings. The good agreement between present simulations and experimental findings allows usage of the present scheme in nonstationary flows.