For example, see magnetohydrodynamics, fluid dynamics, electrohydrodynamics, superconductivity, stellar evolution. Plasma theories such as magnetohydrodynamics may assume the particles to be in thermodynamic equilibrium. The magnetohydrodynamics equations in steady state were solved iteratively starting with an initial dipolar configuration. Understanding the phenomenon is essential to magnetohydrodynamics and has important consequences in astrophysics and geophysics. Plasmas exhibit more complex second-order behaviors, studied as part of magnetohydrodynamics. One subfield at the confluence between CFD and electromagnetic modelling is computational magnetohydrodynamics. They are heavily used in computational fluid dynamics and computational magnetohydrodynamics. Waves and other phenomena in the magnetosphere can be modeled using magnetohydrodynamics. Interplay between magnetic pressure and ordinary gas pressure is important to magnetohydrodynamics and plasma physics. The Chandrasekhar number, an important dimensionless number of magnetohydrodynamics, is named after him. He worked on magnetohydrodynamics and biological fluid dynamics. He worked as a research engineer conducting research in magnetohydrodynamics (MHD). A number of experimental methods of spacecraft propulsion are based on magnetohydrodynamics. As iterative solutions are too costly, especially in magnetohydrodynamics, some approximations have to be made. Many problems of fluid dynamics and magnetohydrodynamics fall within this category.