Modeling of the two-phase flow during depressurization of liquified CO2 in a pipe

Modeling transient CO2 two-phase flow in a pipe is essential studying depressurization mechanisms resulting from liquified accidental release. Generated data such models predict the released characteristics and possible propagating fractures. Accordingly, they provide valuable input for risk prevention designing safely operating transport pipelines. simulation involves fluid-mechanical thermodynamic models, primarily expressed by hyperbolic partial differential equations an equation of state (EOS). Besides, these are solved with appropriate numerical methods. This paper deals drift flux - homogeneous equilibrium model (HEM) construction utilizing central-upwind-weighted essentially non-oscillatory (WENO) schemes to describe during decompression pipe. Rapid transition mass, momentum, energy at interface between liquid vapor phases assumed HEM. Thus, thermal, mechanical, chemical equilibrium. The properties calculated applying Span-Wagner EOS. high-resolution second-order central, central-upwind, third-order weighted have been executed HEM, effectively captured rapid phase transition. central-upwind (ENO) schemes' stencils can be constructing higher-order accuracy central-upwind-WENO scheme. structured scheme uses smoothness indicator as alternative limiter function. variables cell determined WENO reconstruction, while used compute properties.