DPM – ANSYS Fluent Training Package, 10 Practical Exercises for BEGINNER Users

Description

Discrete Phase Model (DPM) ANSYS Fluent CFD Simulation Training Package for BEGINNER Users

This training package includes 10 practical Discrete Phase Model (DPM) exercises using ANSYS Fluent software. MR CFD suggests this package for BEGINNER users new to this module.

Covid-19 Pandemic

Coronavirus (Covid-19) is known as the most significant human challenge in the world today, and the high transmission rate of this disease is very problematic. In project number 1, based on the CFD method, an attempt has been made to simulate the release of virus particles from a Coronavirus patient’s mouth while TALKING and transmitting it to another person in a specific space (social distancing). This study aims to investigate the ability of virus particles to propagate and transmit at a distance less than a social distance.

One of the most important doctors’ recommendations regarding preventing disease transmission between people is the use of special masks or shields at low social distances. In project number 2, an attempt has been made to simulate the release of coronavirus particles from a patient’s mouth while talking and using a SHIELD to prevent transmission to another person. This study aimed to evaluate the effectiveness of using a shield or mask as a barrier on a patient’s face against the spread of virus particles.

DPM in Natural Phenomena

Many phenomena in nature, such as rain or snow, or airborne dust, can be thought of as scattering particles in the air fluid. In project number 3, SNOWFALL in the park is investigated. In this simulation, two types of material are used: air and particles that snow in a Disctere phase material. Plus, Trajectories of particles within the park were observed.

In project number 4, numerical simulation of dust particles entering from the windows into a room has been done. In this project, the dust particles entering the building at a speed of 0.25 m/s are examined, and the house’s sedimentation and dust movement are depicted. Also, a two-way DPM model is used.

In project number 5, numerical simulation of wind-driven rain has been done. The purpose of this project is to investigate the movement of raindrops in wind conditions of 5 meters per second, which has been done in two ways, one-way DPM and two-way DPM. The diameter of the drops is 0.5 cm, but in order to be seen better, they have been scaled in contours and animation.

Erosion

Unfortunately, the fluid is not pure in almost all industrial applications, so erosion causes problems in pipeline transport. Also, an issue that reinforces this event is the amount of flow turbulence. The more turbulent the flow, the greater the momentum is flowing by the particles. The impacts on the transmission pipeline are greater when the flow changes direction, resulting in more erosion. In addition to the flow turbulence, other factors such as particle size, the rate of particle flow redirection, the number of particle impacts to the surface, and the flow rate also influence the amount and profile of the erosion. The other endpoint is that erosion is usually where the flow redirects. This is precisely why fasteners and joints’ erosion profile at the knees is generally examined, and it is investigated in project number 6.

In project number 7, the airflow containing micro-particles inside an elbow is simulated. Air enters the pipe with a velocity of 17 m/s and carries particles until it reaches an elbow. Most of the particles will collide with the outer elbow surface and gradually erode the pipe’s inner surface. The standard k-epsilon model is exploited for solving the turbulent fluid flow equation. And finally, In project number 8, the simulation is modeling erosion in the bent pipe by a Two-way DPM Erosion Model to see the erosion rate in the pipe. Working fluid is water liquid, and sand particles are DPM injections. Particles are inert and with no initial velocity.

Trapper

Multi-phase flows were classified into different groups, including dispersed multi-phase flows common in engineering systems. In such a flow, one phase is considered the carrier phase, in which particles, bubbles, and droplets are dispersed and form other phases. CFD simulation plays a prominent role in optimizing the design of distributed multi-phase flow systems. In project number 9, an attempt has been made to simulate and analyze the flow of a particle trapping mechanism called the discrete phase trap (TRAPPER). The flow containing continuous and dispersed phases enters the computational domain with a speed of 5m/s and the standard k-epsilon model is exploited for solving fluid flow equations.

DPM in Medical application

In project number 10, Asthma Spray in human lungs was investigated using the one-way DPM (Discrete phase material) method. In this simulation, two types of material are used: air and particles that enter the lungs in a Discrete phase material. Trajectories of particles within the lung were observed. The air inlet velocity enters the field at 5 m / s with a gravity of -9.81 m / s-2 on the z-axis.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.