DESIGN OF A LOW-PRESSURE BURNER SYSTEM FOR LAMINAR FLAME STUDIES,

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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

Author(s):
Fristrom, R. M. ; Raezer, S. D.
Author Organization(s):
JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB
Pagination:
0027

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
CM-912
Contract/Grant Number(s):
NOrd-7386
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*FLAMES, TEST EQUIPMENT, LOW PRESSURE, STABILITY, GAS FLOW, PHOTOGRAPHIC ANALYSIS, LAMINAR FLOW
Field(s)/Group(s):
Combustion and Ignition
Keyword(s):
BURNERS
Report Date:
1957 Aug 01