چكيده به لاتين
Explosion phenomena and quantitative consequence modeling in process industries, were always important issue for specialists, of course because of complexity of explosion phenomena. Usually, at this step computational fluid dynamic simulation, is not used. In this area, we need fast and reliable design for estimation of overpressure value in order to layout optimization. We know that using CFD during facility design is time consuming and also will not be reliable because of shortage in some principal data. So, different choices can't be investigated. At this thesis by using different explosion model in some geometries sample, validity of model will be checked in small scale. The models and results are compared with experimental data and published papers. Then, we used approved explosion models in different geometry, physical and chemical properties & conditions. Research finding show that Large eddy scale and premixed combustion are suitable turbulence and explosion model, respectively. In this way using flame surface density model based on Charlette & Zimont are reliable method for calculation of explosion overpressure. Meanwhile mathematical dimensionless formula based on non-regression analysis shows that maximum explosion overpressure has direct proportional to gas type, volume blockage ratio, confinement ratio, filling degree of gas and inverse proportional to sphericity coefficient of barriers with exponential function. Maximum effect on explosion overpressure belongs to gas type with coefficient of 1520 & minimum effect is related to filling degree of gas by the coefficient 1.7, both in power of exponential function.
