ID#: 104
Abstract Title: Detonation of Propane-Air Mixture in the Perforated Tube and Release of Detonation Products
Session Title: Detonation Limit/Failure
Session Date: 7/30/01
Session Start Time: 3:40 PM
Contributing Author: Tarzhanov, V.
Organization: RFNC-VNIITF
Country: Russia
Authors: V.I. Tarzhanov, V.I. Sdobnov, A.D. Zinchenko, V.A. Ogarkov
Short Abstract: RFNC-VNIITF proposed the way and TSD-01M facility, which are used to investigate basic mechanisms of the deflagration-to-detonation transition “under the magnifying glass”. The facility has a small internal partially perforated tube. The purpose of this tube is to create hot detonation products (HDP) of the fuel mixture and their release from it into the main tube of the facility through the holes arranged uniformly in staggered rows over the surface of the small tube portion. Experiments were performed with measuring chambers arranged above holes of the perforation tube portion, just at the front end and at the back end of this portion. Pressure-time ratios in measuring chambers allow calculation of HDP mass injected into the chamber through one hole in a tube wall as well as determination of the jet head velocity in the chamber and sound velocity in HDP jet, i.e. its temperature assessment, by pulse shift and oscillations. Obtained profiles of the detonation wave at different perforation of the tube portion indicate, firstly, absence of detonation quenching and, secondly, a shortened wave profile at the perforated tube portion, if compared with the profile in a smooth tube. One-dimensional computer code “Prognoz” is developed to simulate viscous gas detonation with the outflow of detonation products thorough the holes of the perforated tube.