Before revision:  When the load balancing is utilized together with a reference mapping model also introduced in this paper , a speed-up by a factor of 10 is reported for practical reactive flow simulations .
After revision:  When the load balancing is utilized together with a reference mapping model is utilized to further speed-up the simulations. When DLBFoam it utilized with both these features enabled , a speed-up by a factor of 10 is reported for practical reactive flow simulations .