ACADSTAFF UGM
| Title | : | Effect of Initiation Energy and Initial Pressure on the subject of Direct Initiation Methane-Oxygen Detonation Induction Distance |
| Author | : |
DAVIN DEMAS S (1) Dr. Ir. Jayan Sentanuhady, S.T., M.Eng., IPU., ASEAN Eng. (2) WILLIE PRASIDHA (3) |
| Date | : | 2017 |
| Keyword | : | detonation; methane; initiation energy; detonation induction distance detonation; methane; initiation energy; detonation induction distance |
| Abstract | : | The safety issue on the subject of accidental explosions in utilization of methane fuel in industrial sites remains a real danger for human’s life due to its high reactivity. This research sets an aim to experimentally characterize the detonation induction distance (DID) of fuel-rich methane-oxygen mixture relate to altered initiation energy and initial pressure. The experimental scheme is comprised of four subsystems, i.e. the detonation test tube (DTT), the mixture preparation devices, the spark ignition apparatus, and the data acquisition system. A 50 mm-inner diameter and 1 m long detonation test tube is filled by stoichiometric methane-oxygen. A dump tank is placed at the end of the tube in order to absorb reflected shock generated during the test. Four piezotronics pressure sensors are installed in the DTT with 250 mm interval. The pressure sensors will record the pressure at points through which the shock wave propagates. In addition, the ionization sensors, termed ion probes, are installed straight ahead the pressure sensors. These are used to detect the time arrival of the flame front. The measurement of pressure sensors and ion probes will be recorded and displayed by digital oscilloscopes. In order to visualize the detonation cells yielded from the experiment, the soot track records are inserted along the DTT. The DTT is employed with various initial pressures vary between 10-100 kPa with 10 kPa interval. The initiation energy of spark igniter is also varied. The methane-oxygen mixture will be ignited on direct initiation. It is observed that detonation induction distance (DID) is very much influenced by energy initiation and initial pressure. As they are settled on higher value, the DID is recognized closer to the front-end of tube. Moreover, stable detonation is more likely to occur at higher initial pressure or initiation energy, which is signified by smaller size of detonation cells and single-headed pattern. On the contrary, unsuccessful detonation or deflagration wave occur at lower states. |
| Group of Knowledge | : | |
| Level | : | Nasional |
| Status | : |
Published
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