Many scientific areas make extensive use of computer simulations to study complex real-world processes. These computations are typically very resource-intensive and present scalability issues as experiments get larger, even in dedicated clusters since they are limited by their own hardware resources. Cloud computing raises as an option to move forward into the ideal unlimited scalability by providing virtually infinite resources, yet applications must be adapted to this new paradigm. We propose a generalist cloudification method based in the MapReduce paradigm to migrate numerical simulations into the cloud to provide greater scalability. We analysed its viability by applying it to a real-world simulation and running the resulting implementation on Hadoop YARN over Amazons EC2. Our tests show that the cloudified application is highly scalable and there is still a large margin to improve the theoretical model and its implementations, and also to extend it to a wider range of simulations.