Isovolumetric is the type of thermodynamic process that takes place. This process is also called the constant volume process or the isochoric process of thermodynamic, during which the volume of the closed system undergoing such a process remains constant. Thermodynamis process is when heat moves, either within systems or between systems. There are four types of thermodynamic process isovolumetric, isobaric, isothermal and adiabatic.