Specific Features of the Flow in a Conical Shock Tube

• Published in: Russian journal of physical chemistry. B Vol. 14; no. 4; pp. 601 - 606
• Main Authors: Medvedev, S. P., Ivantsov, A. N., Mikhailin, A. I., Silnikov, M. V., Tereza, A. M., Khomik, S. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2020; Springer Nature B.V
• Subjects: Chemistry; Chemistry and Materials Science; Combustion; Conical flow; Dynamic loads; Explosion; Explosions; Inhomogeneity; Interaction parameters; Longitudinal waves; Physical Chemistry; Rarefaction; Shock Waves; Spherical waves; explosion; spherical shock wave; dynamic load; compression phase; conical shock tube; rarefaction phase
• ISSN: 1990-7931; 1990-7923
• DOI: 10.1134/S199079312004020X

An analysis of the results of a three-dimensional numerical simulation of the flow in a conical shock tube (CST) with an angle of 38° revealed that the blast waves formed in such a tube have a pressure profile similar to spherical shock waves (SSWs) with a pronounced rarefaction phase following the compression phase. It is established that the main difference between the flow in conical geometry and the spherical case is related to the change in the flow parameters due to the interaction with the bounding surface(cone wall). The revealed inhomogeneity of the flow manifests itself in the form of pressure pulsations in the rarefaction phase in the absence of a secondary compression phase. It is concluded that a CST is an effective tool for reproducing dynamic loads under a spherical explosion.