
Solution of the discrete phase implies integration in time of the force balance on the particle (Equation 22.21) to yield the particle trajectory. As the particle is moved along its trajectory, heat and mass transfer between the particle and the continuous phase are also computed via the heat/mass transfer laws (Section 22.9). The accuracy of the discrete phase calculation thus depends on the time accuracy of the integration and upon the appropriate coupling between the discrete and continuous phases when required. Numerical controls are described in Section 22.11.7. Coupling and performing trajectory calculations are described in Section 22.15.2. Sections 22.15.3 and 22.11.9 provide information about resetting interphase exchange terms and using the parallel solver for a discrete phase calculation.