The standard Lagrangian model is limited to gas-particle diluted flows. Therefore, in these processes, particle interaction does not play an important role and the momentum is transmitted through continuous interaction with the particle. For flows with the above parameter less than 10, the interaction between the particles is important and should be considered in calculations to simulate particle collisions. In this model, it is not necessary to track the path of all the particles simultaneously, instead of it, a repetitive approach is used. The Summerfield particle collision algorithms are as follows:
- Calculate the direction of motion of the particle in a periodic manner
- 2- Calculating the particle properties by statistical means and standard deviation of the diameter and velocity of the particles
- Creating a virtual collision based on the particle’s statistical properties
- Random processes decide whether a collision occurs
- 5- Go to 1
To adjust the collision of particle to particle we must select the Fluid Pair Models tab from Flow Analysis, and then activate the Particle Collision box. Then you have to choose one of the existing models. There are two types of User-Defined and Summerfield models in the software. In the User Defined model, the user defines the collision model. Input parameters in the Summerfield model are elastic coefficients, static frictional coefficient and kinematic frictional coefficient. If both coefficients of elasticity are equal, it is completely elastic and otherwise it is non-elastic. To investigate the effect of particle collisions on their pathway, the experimental tests such as Fohanna & Oesterle are considered.
Mr CFD Company services
Due to the wide range of mechanical science and the different fields of work as well as the abundance of projects, this company offers to view all the products presented in this section. In the absence of any desired project or project close to your request, you can search our portfolios in order to find your eligible project, after all, if you didn’t find any ideal project you can order your project from the services pages on the header of this website. Your order will be reviewed by our experts in the shortest possible time, and if we need more information about the proposed project, we will be in touch with you. After completing the required information to examine the proposed project, and confirming your request, the time, conditions and costs will be sent to you during the contract. This process will take place as soon as possible. If you have any question, you can contact to our online support section (the fixed blue tab below the page). If it is offline, don’t worry, you can post your message, and it will be answered as soon as possible.