Title: Effects of magnetohydrodynamics on temperature and shock standoff distance in a supersonic flow over a blunt body

Authors: Sanjiv Paudel; Saleen Bhattarai; Sudip Bhattrai; Bikalpa Bomjan

Addresses: Department of Mechanical Engineering, Institute of Engineering, Pulchowk Campus, Tribhuvan University, Chakupat 44700, Lalitpur, Nepal ' Department of Mechanical Engineering, Institute of Engineering, Pulchowk Campus, Tribhuvan University, Chakupat 44700, Lalitpur, Nepal ' Department of Mechanical Engineering, Institute of Engineering, Pulchowk Campus, Tribhuvan University, Chakupat 44700, Lalitpur, Nepal ' Flight Operations Engineering and Planning Division, Buddha Air, Tribhuvan International Airport, Kathmandu, Nepal

Abstract: Magnetohydrodynamics has been one of the promising ways of increasing efficiency of supersonic as well as hypersonic propulsion systems, mostly by applying magnetic fields over shockwaves. This paper presents the effects of magnetic fields with different strengths both along and transverse to an electrically conducting flow at Mach 2.94 over a blunt body using a density-based solver implemented with MHD equations in OpenFOAM. The solver utilises Riemann method with an AUSM+ flux splitting technique along with limited linear interpolation. The effects of imposed magnetic field on temperature and shock standoff distance are observed. Movement of the shockwave due to the application of magnetic field on the geometry, along with a consequent change in shock standoff distance is presented in the paper. The influence of a magnetic field's direction on the Mach number of the flow is also shown. Likewise, the stagnation temperature of the blunt body is demonstrated to be independent to the direction of applied magnetic field.

Keywords: bow shock; flow control; supersonic; re-entry; OpenFOAM.

DOI: 10.1504/PCFD.2019.100876

Progress in Computational Fluid Dynamics, An International Journal, 2019 Vol.19 No.4, pp.264 - 271

Received: 14 Nov 2016
Accepted: 10 Dec 2017
Published online: 19 Jul 2019 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article