High-rise buildings are usually exposed to wind. Except for the chimney effect, smoke movement and fire behavior are strongly influenced by external wind forces. In this research, the effect of side wind was investigated numerically with Pyrosim software and using the Navirastox equations, energy, mass survival, fire and smoke distribution, and the large eddy simulation model was used for turbulence. For validation, the results were compared with Zhao et al.\\\'s research. The side wind speed was considered between 0 and 1.2 m/s. The effect of side wind on smoke temperature was evaluated at different released heat. The released heat was considered in three modes of 300, 500 and 900 kW. In the case of constant released heat, the temperature should increase at first until it reaches a temperature peak, then the temperature decreases with the increase in wind speed. Also, with the increase in wind speed, the concentration of carbon monoxide increased by about 3%. The results showed that the side wind increases the risk of fire and should be considered in the design of buildings exposed to the wind.

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