Wave Induced Fluxes Of Horizontal Momentum In Eulerian Generalized Lagrangian And

Comparison of Lagrangian model with Eulerian model

Comparison of Lagrangian model with Eulerian model

In the Lagrangian model, the particle is considered as a dispersed phase, and the instantaneous location of particles is obtained by solving differential equations, but in the Eulerian method, each phase is considered separately and the equations of mass, momentum and energy conservation are independent for each phase.

The disadvantages of the Lagrangian model are:

  • The model will be valid only in the low volume ratios (dispersed phase ratio to continuous phase).
  • To simulate larger particles, the model has errors and is not cost-effective.
  • It will be difficult to obtain information on volume fraction, acceleration and lateral side wall force.


The advantages of the Lagrangian method includes the following:

  • Provides complete information on the behavior and time situations of the particles individually.
  • For a specific range of particle size the Eulerian method has lower computational cost.
  • If the particles are different in size, the friction, heat and mass properties will be better.


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