EULERIAN Multi-phase Model – ANSYS Fluent Training Package, 10 Practical Exercises for ADVANCEDS
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Eulerian Multi-phase Model CFD Simulation Package, ANSYS Fluent Training for ADVANCED Users
This CFD training package is prepared for ADVANCED users of ANSYS Fluent software in the EULERIAN Multi-phase Model 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.
While the DPM strategy for CFD solutions proved to be an excellent method to calculate flow particle-flow studies, this approach cannot provide reliable answers for dense particle simulations. Therefore, the DDPM (Dense-Discrete-Phase-Method) is mostly employed in CFD projects. In project number 1, we have simulated a simple elbow bend. However, the fast injection would result in a dense accumulation of particles. Therefore, a dense DDPM model is employed.
Project number 2 simulates sand particle sedimentation in a water flow channel. The sedimentation phenomenon is one of the destructive phenomena in the quality of performance of any equipment. The Eulerian-Lagrangian perspective on computational fluid dynamics (CFD) is used in the present simulation. The Eulerian multiphase model is coupled with the dense discrete phase model (DDPM). A continuous phase is defined, related to water flow, and a discrete phase is described, which is related to sand particles.
Project number 3 simulates multi-phase flow in a porous medium. Water flow with a relative pressure of 100,000 pascals and a temperature of 288.15 K enters from the top of a vertical column. It enters a porous media at the end of the column. In the present simulation, a multi-phase model is used; So that its primary phase is liquid water and its secondary phase is water-soluble particles (sludge).
Non-Newtonian Flow (EULERIAN Multi-phase Model)
Project number 4 simulates a non-Newton two-phase flow between two concentric cylinders. Fluids are divided into two categories in terms of viscosity: Newtonian and non-Newtonian fluids. In this simulation, a two-phase flow is defined using the Eulerian model, the base fluid of which is a non-Newtonian fluid with a soluble fluid flowing through it.
In project number 5, Ansys Fluent software has been used to simulate the agricultural drone sprayer. The system consists of two different fluids, including air as the primary fluid, and one secondary fluid is poison with a density of 0.9512. the Eulerian multiphase model has been used. The toxin is entering the domain with the speed of 5m/s with gravity considered as -9.81 m/s-2 on the y-axis and airspeed is 15 m/s.
Project number 6 simulates the boiling process inside a nanotube. A nanotube is a tube that is made at the nano-scale by nano-particles. This simulation assumes that the water SATURATION temperature is 383.15 K; at this temperature, a phase change from liquid water to water vapor occurs. The water stream enters the pipe at a speed of 1e-5 and a temperature of 373.15 K, and since this water stream is close to the saturation temperature, it can be said that it is ready for the boiling process.
Packed Bed Reactor (EULERIAN Multi-phase Model)
In project number 7, a packed bed reactor is simulated. Reactor models vary from pseudo-homogeneous to heterogeneous, from one dimensional to three dimensional, and from assumed flow patterns to computed flow and transport fields. Packed bed reactors, also known as fixed-bed reactors, are often used for catalytic processes. A packed bed reactor (PBR) is preferred for heterogeneous reactions, where the solid-fluid contact dramatically influences the reaction rate.
In project number 8, we simulated reverse osmosis. This mechanism is used to purify water so that a membrane is placed in front of the water movement and does not allow the salts in the water to leave and pure water leaves. The Eulerian Multi-phase model has been used in this project. Inlet water velocity is 0.01 m/s, the volume fraction of solutes is 0.02, And the membrane layer is simulated as a porous medium.
Project number 9 simulates the airflow around the airfoil and creates a water film on the surface of the airfoil body. When moisturized air and water droplets hit the airfoil’s surface, a water film may form on the airfoil surface. This work investigates the thickness of the produced and flowing fluid layer on the airfoil body; The Eulerian wall film model was used to simulate and estimate the amount of liquid film produced. This model estimates the formation or flow of a thin film of liquid on the wall surfaces.
Separator (EULERIAN Multi-phase Model)
Project number 10 simulates well drilling and sludge separation. In this simulation, a cylindrical hole is considered a well, inside which a rotating body in the shape of a cylinder is placed. Inside the cavity, a Non-Newtonian material for drilling operations flows; So that the mud particles inside it are mixed. The fluid CMC as the primary phase has a density of 1271.477 kg.m-3, and its viscosity is defined as non-Newtonian, which is according to the Herschel-Bulkley rule; While the soluble particles of mud in the Non-Newtonian fluid also have a density equal to 2000 kg.m-3 and a viscosity equal to 0.00111 kg.m-1.s-1.
You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.