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The book provides highly specialized researchers and practitioners
with a major contribution to mathematical models' developments for
energy systems. First, dynamic process simulation models based on
mixture flow and two-fluid models are developed for combined-cycle
power plants, pulverised coal-fired power plants, concentrated
solar power plant and municipal waste incineration. Operation data,
obtained from different power stations, are used to investigate the
capability of dynamic models to predict the behaviour of real
processes and to analyse the influence of modeling assumptions on
simulation results. Then, a computational fluid dynamics (CFD)
simulation programme, so-called DEMEST, is developed. Here, the
fluid-solid, particle-particle and particle-wall interactions are
modeled by tracking all individual particles. To this purpose, the
deterministic Euler-Lagrange/Discrete Element Method (DEM) is
applied and further improved. An emphasis is given to the
determination of inter-phase values, such as volumetric void
fraction, momentum and heat transfers, using a new procedure known
as the offset-method and to the particle-grid method allowing the
refinement of the grid resolution independently from particle size.
Model validation is described in detail. Moreover, thermochemical
reaction models for solid fuel combustion are developed based on
quasi-single-phase, two-fluid and Euler-Lagrange/MP-PIC models.
Measurements obtained from actual power plants are used for
validation and comparison of the developed numerical models.
The book provides highly specialized researchers and practitioners
with a major contribution to mathematical models' developments for
energy systems. First, dynamic process simulation models based on
mixture flow and two-fluid models are developed for combined-cycle
power plants, pulverised coal-fired power plants, concentrated
solar power plant and municipal waste incineration. Operation data,
obtained from different power stations, are used to investigate the
capability of dynamic models to predict the behaviour of real
processes and to analyse the influence of modeling assumptions on
simulation results. Then, a computational fluid dynamics (CFD)
simulation programme, so-called DEMEST, is developed. Here, the
fluid-solid, particle-particle and particle-wall interactions are
modeled by tracking all individual particles. To this purpose, the
deterministic Euler-Lagrange/Discrete Element Method (DEM) is
applied and further improved. An emphasis is given to the
determination of inter-phase values, such as volumetric void
fraction, momentum and heat transfers, using a new procedure known
as the offset-method and to the particle-grid method allowing the
refinement of the grid resolution independently from particle size.
Model validation is described in detail. Moreover, thermochemical
reaction models for solid fuel combustion are developed based on
quasi-single-phase, two-fluid and Euler-Lagrange/MP-PIC models.
Measurements obtained from actual power plants are used for
validation and comparison of the developed numerical models.
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