DPM CFD Simulation Training Package for Expert Users

Description

Discrete Phase Model(DPM) CFD Simulation Package, 10 ANSYS Fluent Training for EXPERT Users

DPM CFD Simulation Training Package is prepared for EXPERT users of ANSYS Fluent software in the Discrete Phase Model (DPM) area, including 10 practical exercises. You will learn and obtain comprehensive training on how to simulate projects. The achieved knowledge will enable you to choose the most appropriate modeling approaches and methods for applications and CFD simulations.

Coronavirus (Covid-19)

Coronavirus (COVID-19) is currently recognized as the greatest human challenge in the world; Because this disease, in addition to being dangerous to human health, has a high transmission power between sick people and healthy people. The coughing or sneezing of a sick person without a mask in space causes the spread of coronaviruses.

The Elevator Cabin is one of the most important spaces in the discussion of coronavirus disease; Because usually, several people with the shortest possible distance are placed in a small space with a not very strong ventilation system. In project number 1, based on the CFD method, an attempt has been made to simulate the coronavirus particles dispersion from the carrier patient SNEEZE inside an elevator cabin.

Project number 2 aims to investigate the diffusion power of virus particles inside the Car interior. The injection is performed superficially and through the surface of the patient’s mouth. According to this definition of injection, human COUGH virus particles are physically expelled from the patient’s mouth by water droplets that are evaporating in space.

Project number 3 simulates the airflow from a patient’s (COVID-19) mouth in a Hospital room. In fact, in the present case, a special operating room has been designed equipped with ventilation and air conditioning systems. This model assumes that the exhaled air from the patient’s mouth has oxygen with a mass fraction of 0.16 and carbon dioxide with a mass fraction of 0.04 and a temperature of 310.15 K. Also, the input flow rate from the oral area is defined as the UDF.

Combustion in DPM CFD Simulation Training Package

Given the increasing industrial use of coal consumption and the importance of finding clean energy coal technology development, modeling its combustion characteristics is very important. In project number 4, a combustion chamber is simulated. We used two-way DPM for particles, and anthracite as an injection material has been used in this simulation. Anthracite is the best type of coal with the highest calorific value.

Project 5 simulated the gas turbine combustion chamber using a Discrete Phase Model (DPM) and Species Transport Model. In this case, the effect of spraying Benzene particles is done using the Eddy- Dissipation combustion model. This combustion chamber is commonly used for jet engine users.

The Gasification process is a set of chemical reactions in which a carbon-based substance is converted to carbon monoxide, hydrogen, and carbon dioxide. Project number 6 simulates the gasification process inside a Gasifier Chamber. The fuel stream enters the gasifier chamber from the lower area in the form of stagnant particles with a velocity of 30 m.s-1, a temperature of 393.15 K, and a mass flow rate of 0.2 kg.s-1; While the flow of liquid water in the form of droplets with a velocity of 122 ms-1, temperature 673.15 K and a flow rate of 0.02 kg.s-1 enters the chamber from the middle area and under the process of evaporation turns into water vapor to react with fuel particles.

Dryer

The feed solution (slurry, paste, etc.) is first conveyed to the Atomizer via a tank by means of a pump; the atomizer disperses the liquid solution as a spray or liquid droplets into the main dryer compartment. On the other hand, hot air, which rises by a burner or steam heater, blows into the chamber by a fan. At this point, the liquid phase of the spray contacts hot air so that the moisture within the droplets evaporates within a short time, leaving the powdered dry particles with the hot air out of the chamber.

The main purpose of project number 7 is to investigate the behavior of particles that flow as a discrete phase in a continuous flow inside a Spray dryer. For this simulation, we use two types of continuous and discrete phases.

In project number 8, which has been done by CFD numerical simulation method, The spray drying chamber is simulated by the two-way DPM & Species Transport model. The particle diameter is 1 mm, and the flow moves at a speed of 1 m/s.

DDPM & DEM in DPM CFD Simulation Training Package

The Discrete Element Method, or DEM, is a numerical method for calculating the interaction of large numbers of small particles. Despite the very close relationship between DEM and the “Molecular Dynamics” simulation method, features such as degree of rotational freedom, particle contact, and complex geometry generally distinguish this approach from other options. While the DPM strategy for CFD solutions is a great way to compute particle flow studies that reduce computational costs, this approach fails to provide reliable answers for simulating dense particles with concentrations greater than 10% by volume. DDPM (Dense Discrete Phase Method) is used in project number 9 to simulate an Hourglass.

Multicomponent particles

In project number 10, the Multicomponent particle type for droplets has been investigated. We have used the one-way DPM to simulate the discrete phase.

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