Numerical Simulations on Visibility and Temperature in a Car Park of a Commercial Building

The study of temperature and visibility in the parking of the commercial complex was done by Fire Dynamic Simulator code with various fire accident. Specification fire of parking were obtained in different fan system conditions. Temperature and visibility of a stairwell on various conditions were contrasted. The values were obtained at a height of ۱.۶m. The results showed that in the first state, temperature and visibility reached ۸۰°C and ۱ meters in ۱۲۰۰s after the fire, respectively. In the second state, visibility reached ۶.۳۴m in ۱۲۰۰s, which was ۶.۳۴ times better than the first state. The temperature also decreased to ۵۱.۱۱°C in ۱۲۰۰s. The temperature improved by ۳۶.۱۹% compared to the first state. In the third state, after ۱۲۰۰s, the temperature decreased ۴۴.۷۲°C. In the third state, the visibility was ۱۵.۵۹m, which improved ۱۵.۵۹ times the first state.