Pressure Loss Modeling

Abstract

This chapter gives an introduction to the Bernoulli equation and the different correlations to calculate the friction pressure loss coefficient for single- and two-phase flow (evaporation and condensation). Detailed descriptions of the physical equations for pressure loss components are provided (lumped straight pipe, pipe pressure loss, singular pressure loss, bend, control valve, check valve, dynamic check valve, etc): modeling assumptions, fundamental equations, and correlations with their validity domains. A test-case for each component model is given that includes the structure of the model, parameterization data, model calibration, and results of simulation. The full description of the physical equations is independent of the programming languages and tools.