define computational
Computation is finding an answer by using mathematics or logic. You can use a computer to do computations. But you can also do computations yourself when you add, subtract, multiply, etc.
Computational physics. This article is about computational science applied in physics. For theories comparing the universe to a computer, see digital physics. For the study of the fundamental physical limits of computers, see physics of computation. Computational physics is the study and implementation of numerical analysis to solve problems in physics for which a quantitative theory already exists. Historically, computational physics was the first application of modern computers in science, and is now a subset of computational science.