Hooser, Jared D.
Wendell Hull and Associates, Inc., Las Cruces, NM
Assistant Professor, New Mexico State Univ., Las Cruces, NM
Newton, Barry E.
VP R&D, Wendell Hull and Associates, Inc., Las Cruces, NM
Chiffoleau, Gwenael J. A.
Senior Scientist, Test Facility Manager, Wendell Hull & Associates, Inc., Las Cruces, NM
Pages: 21 Published: Jan 2009
Flow friction ignition of non-metallic materials in oxygen is a poorly understood heat-generating mechanism thought to be caused by oxygen flow past a non-metallic sealing surface. Micron-scale fatigue cracks or channels were observed on non-metallic sealing surfaces of oxygen components and could provide a leak path for the high-pressure oxygen to flow across the seal. Literature in the field of micro-fluidics research has noted that viscous dissipation, a heat-generating mechanism, may not be negligible as the flow dimension of the channel is reduced to the micron-scale. Results of a computational fluid dynamics study are presented and used to determine if temperatures developed in high-pressure driven micro-channel oxygen flows are capable of reaching the reported autogenous ignition temperature of non-metallic materials in oxygen.
flow friction ignition, viscous heating, oxygen fires, microchannel flow, cylinder valves, CGA 870 seals, computational fluid dynamics, stagnation heating
Paper ID: STP48845S