Hello everyone. Recently i am start to work on Ansys fluent software to simulate a model. Model: A rectangular vessel having 100mm height, 30mm width and 1mm thickness having the mixture of methane(10%v/v) and air(90%v/v) with a central spark. i put spark in the center with energy 2 joule and diameter of spark is 1 mm for duration of 0.1s. The condition is a transient, pressure density based, species transport, select eddy dissipation, on the spark, method selected is PISO, boundary conditions no outlet or inlet. all walls or adiabatic, wall is made of steel, heat flux zero, values of species is 0.20 CH4, 0.76 O2, 0.001 CO2, 0.001 H2O, . initialization standard, second order of all functions. Still i can not get the right results. I need to plot a graph between temperature and time, pressure and time which should be come in the range of 2000k and 0.6-0.8mpa. anyone please guide me that where i am doing mistakes.

I share three pictures, two screenshot are my results which are not correct and one rough picture which has the excepted results.