In the MFIX, when we decide the properties of fluid, and need to simulate the heat transfer between fluid and solid, the thermal conductivity of fluid is important, we all know that the conductivity varies from the composition of fluid and temperature. So except giving the right value of the conductivity, in MIFX we can also choose (Temperature depended), However, it calculated based on the property of air. And I wonder know when we simulate the strong endothermic or exothermic reaction, will the calculation of none-reactive gas thermal conductivity influence the reaction result?