—In the present work, the adiabatic heating during
high-pressure processing of liquid food is analyzed by means of
numerical simulations. Natural convection heating within a
three-dimensional cylinder filled with water as a model liquid
food during sterilization is simulated. Pressure is assumed to
rise from atmospheric pressure to the treatment pressure of 500
MPa. The governing equations for continuity, momentum and
energy conservation are solved using a commercial
Computational Fluid Dynamics (CFD) package (PHOENICS),
version 3.5, which is based on a finite volume method of solution.
Temperature and pressure profiles within the model liquid are
predicted. The simulations show that the heat transfer process
after completion of the compression process is mostly controlled
by conduction, which is due to the insignificant effect of natural
convection (very low liquid velocity 3x10-8 – 4x10-7 ms-1) as
observed from the results of the simulation.
—CFD, high pressure processing, temperature
Suhad S. Hussein is with Baghdad University, Iraq (e-mail:
Cite: Suhad S. Hussein, "A Computer Simulation Study of High Pressure Processing
of Liquid Food Using Computational Fluid Dynamics," International Journal of Modeling and Optimization vol. 5, no. 1, pp. 78-81, 2015.