Some Field Model Validation Studies

Abstract

The three dimensional time-dependent field model known as JASMINE has been applied to several experimental fire configurations for validation purposes. Comparisons of predictions with non-spreading experimental fires conducted in a forced ventilated fire test cell (6 m x 4 m x 4,5 m), closed six-bed hospital ward (7.3 m x 7.9 m x 2.7. m) and a railway tunnel, both forced and naturally ventilated (390 m x 5 m x 4 m) are summarised in this paper.The agreement is shown to be quite satisfactory except in the immediate vicinity of the fire source.It is suggested that the model may now be used with some caution to study smoke movement problems, however, improvements to the turbulence -chemistry interaction at the source will be required before the spreading fire can be reliably predicted.

Simulation of airflow in one- and two-room enclosures containing a fire source

“…burning-room opening area (m 2 ) A r Archimedes number a numerical coefficients [11,12], the air velocity and temperature distributions were predicted in an enclosure containing a fire source. The problem was solved in a two-dimensional domain and the fire source was handled as a Volumetric Heat Source (VHS).…”

Fire Physics - Promises, Problems, And Progress

“…COMPARTMENT MODELING A thorough review of each of these divisions could easily occupy all 15 allowed pages. But my allotment is already exceeded, so I will only cite a few reviews for flame spread (20,69,77,93,94,(106)(107)(108)(109)(110)(111)(112)(113)(114)(115)(116)(117) and compartment modeling (14,21,24,32,(51)(52)(53)(54)(55)(56)(57)(58)(59)(60)(61)(62)(118)(119)(120)(121)(122)(123)(124)(125)(126)(127)(128)(129)(130) and carry forward one thread from the fire physics invited lecture at the last symposium. Professor Emmons identified window breaking as a key unresolved problem (31) and gave, in his usual way, sufficient physical insight to make a solution tractable.…”

Simulation of Air Temperature in an Under-Bridge Storehouse

“…The pressure variable was associated with the continuity equation 0 = ) u div(ρ (3) in anticipation of the so-called pressure-correction equation, which is deduced from the finite-domain form of Eq.3. Further details may be found, for example, in [9]. The momentum and enthalpy conservation equations are implemented for steady-state simulation and are as follows:…”