- Author
-
Yamauchi, Y.
- Title
- Estimation Model for Response Time of a Smoke Detector.
- Coporate
- Hochiki Corp., Japan
- Book or Conf
- Japanese Association of Fire Science and Engineering. Annual Conference. May 19-20, 1988,
Tokyo, Japan,
9-12 p.,
1988
- Keywords
-
smoke detectors
|
boussinesq approximation
- Abstract
- [ABSTRACT IN ENGLISH] Introduces a model based on the standard "2 layer" model. Using a "zone model" the average temperature and average smoke density in the upper (smoke) layer is measured and an outline of the plume and ceiling jet flow is determined. Next, using a "Boussinesq" approximation, the flow of the plume in the 2nd layer, and temperature, flow, speed, and smoke thickness in the part of the plume hitting the ceiling are determined. Comparisons between experimental calculations and actual data results were exceedingly predictable.