DESIGN OF A LOW-PRESSURE BURNER SYSTEM FOR LAMINAR FLAME STUDIES,
Abstract
Design considerations are given for the construction of a burner system for the study of premixed laminar flames at subatmospheric pressures (one-half to one -twentieth atmosphere). The principal requirement of the system is that the flame front must remain accurately fixed in space (plus or minus 30 microns) over prolonged periods of time (10 minutes). To obtain stability of this order, careful regulation of gas flow and pressure in the system is required. This is accomplished by using critical flow gas inlets and a critical flow gas pumping outlet, with the atmosphere itself as the constant pressure source. The system described allows maintenance of constant pressure to within 0.05 per cent. The source of undesirable flame fluctuations and their suppression are also discussed. A diagram and photographs of a successful burner system are given. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1957
- Accession Number
- AD0631723
Entities
People
- R. M. Fristrom
- S. D. Raezer
Organizations
- Johns Hopkins University Applied Physics Laboratory