ScholarLens Back to search
2016•The Proceedings of Mechanical Engineering Congress JapanOpen access

Measurements of Drag Coefficients of Spheres in Unsteady Flows Induced by a Propagating Shock Wave

Katsuya MOTOYAMA, Yoshitaka SAKAMURA, Motohiro OSHIMA, Katsuyuki NAKAYAMA

Open full text 0 citations

Abstract

The drag coefficient measurements of spherical particles (5.53, 5.88 and 12.68 mm in diameter) in unsteady flows induced by a propagating shock wave were perfomed using a shock tube facility. The Mach number of the shock wave was set to be 1.3. The trajectories of the spherical particles were recorded using the shadowgraphy with a high-speed video camera. Based on the experimental results, the drag coefficients of the spheres were calculated. The drag coefficients of spheres in unsteady flows were found to be larger than the standard drag coefficienets in steady flows.

Open-access reader

About this research paper

What this paper is about

The drag coefficient measurements of spherical particles (5.53, 5.88 and 12.68 mm in diameter) in unsteady flows induced by a propagating shock wave were perfomed using a shock tube facility. The Mach number of the shock wave was set to be 1.3. The trajectories of the spherical particles were recorded using the shadowgraphy with a high-speed video camera. Based on the experimental results, the drag coefficients of the spheres were calculated. The drag coefficients of spheres in unsteady flows were found to be larger than the standard drag coefficienets in steady flows.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The drag coefficient measurements of spherical particles (5.53, 5.88 and 12.68 mm in diameter) in unsteady flows induced by a propagating shock wave were perfomed using a shock tube facility. The Mach number of the shock wave was set to be 1.3. The trajectories of the spherical particles were recorded using the shadowgraphy with a high-speed video camera. Based on the experimental results, the drag coefficients of the spheres were calculated. The drag coefficients of spheres in unsteady flows were found to be larger than the standard drag coefficienets in steady flows.

Key concepts: Drag coefficient, SPHERES, Drag, Mechanics, Shock wave, Shadowgraphy, Wave drag, Mach number

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Measurements of Drag Coefficients of Spheres in Unsteady Flows Induced by a Propagating Shock Wave — Research Paper | ScholarLens