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建立了单室火灾区域模型 ,模型中考虑了火焰与喷淋水之间的相互作用 .定义了一个称为有效喷淋系数的参数 ,其物理意义为喷淋面积与着火面积的有效比 .对有效喷淋系数和喷淋水流率对灭火效果的影响进行了研究 .通过数值模拟得到了以下结果 :对一定条件下的火灾进行喷淋灭火时 ,分别存在一个临界流量和最大流量 .为了灭火 ,喷淋水流率必须大于临界流量 .但用太大的喷淋水量 ,并不提高灭火效果 ,由于喷淋水过量 ,增加了灭火的运行成本 .在给出条件下 ,临界流量和最大流量分别为 0 .0 5 2 4kg/s和 0 .2kg/s .
A single-chamber fire area model was established, in which the interaction between flame and spray water was taken into account and a parameter called effective spray coefficient was defined, the physical meaning of which was the effective ratio between spray area and fire area. The effect of effective sprinkling coefficient and sprinkler flow rate on the fire extinguishing effect were studied.The following results were obtained through numerical simulation: When there is a critical flow rate and maximum flow rate respectively when the fire is extinguished under certain conditions, Spray water flow rate must be greater than the critical flow.But using too much spray water, does not improve the fire extinguishing effect, due to excessive sprinkler water, increasing the operating costs of fire extinguishing.In given conditions, the critical flow and maximum flow were 0. 0 5 2 4kg / s and 0 .2kg / s.