Open Channel Flow, ANSYS Fluent CFD Simulation Training Package, 10 Practical Exercises

Description

Open Channel Flow ANSYS Fluent CFD Simulation Training Package

This CFD training package, including ten practical exercises, is prepared for BEGINNER, INTERMEDIATE, and ADVANCED ANSYS Fluent software users interested in the Open Channel Flow modules. 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.

Channels

In project number 1, the two-phase flow of water and air inside an open channel is investigated. A multiphase VOF model with an open channel setting is activated to simulate two water and air phases inside the channel. The water enters the channel with a mass flow rate of approximately 60Kg/s, and its interaction with the air phase inside the channel is simulated.

Project number 2 simulates a two-phase flow (water and air) inside an open channel with a 180-degree arc. To simulate the mentioned two-phase flow, the multi-phase VOF model (Volume of Fluid) has been used; the VOF model defines different flow phases because of the free surface of water flow inside the canal, and the open channel flow model has been used.

Project number 3 investigates the flow inside an open channel with a 180-degree bend and a side outlet. The standard k-epsilon model is used for solving turbulent flow equations. Also, the multi-phase VOF model is activated to simulate two water and air phases inside the canal.

Pollution (Open Channel Flow)

In project number 4, a Numerical simulation of pollution of the stagnant river has been done. The VOF model is used to simulate the phases. Pollutant enters the river from a nonuniform profile somewhere in the middle of the river, diffusing into the water. Due to its density which is lower than water density, it floats on the free surface of the river.

In project number 5, a numerical simulation of pollution of the meandering river has been done. The VOF model has been used to simulate and solve the two-phase flow field equations. Pollutant enters the river from two circular inlet profiles somewhere at the beginning of the river, and it diffuses into the water. Due to its density lower than water density, pollutants cause the river’s surface to be polluted, and because of the water flow, pollution moves along the river.

Marine (Open Channel Flow)

In project number 6, a numerical simulation of the short wave in the sea has been done. This project aims to investigate the ability to simulate short waves with First-Order Airy theory in Fluent software, and the VOF model with the open channel wave bc has been used.

Project number 7 simulates the motion of a submarine in water using the Dynamic Mesh method. In this simulation, a computational domain including air and water with a certain level of water is designed; So that a submarine is located in this area. Since the sub has only one degree of freedom (1-DOF) and can only rotate around its central axis (x-axis), and in other degrees, it is constrained and has no transient or rotational motion, we use a UDF for defining this type of movement, considering a degree of freedom.

In project number 8, an attempt has been made to investigate the effect of the movement of a jet ski on the border of two fluids (water and air interface) by applying the OPEN CHANNEL FLOW model. The computational domain consists of an inlet wherein the water enters with a mass flow rate of 50000Kg/s and a pressure outlet. The multi-phase VOF model is activated for solving multi-phase flow equations, and the standard k-epsilon model is exploited to account for the turbulence in fluid flows.

Project number 9 simulates the motion of a floating vessel in the water by the dynamic mesh method. In this simulation, a computational domain of water with a specific height level is designed with a floating ship on the water’s surface. To define the instantaneous change of meshing, the Dynamic Mesh model is used Since the vessel has only two degrees of freedom (2-DOF) and can only move up and down in the vertical direction (z-axis) or rotate around its central axis (y-axis), and has a constraint in other directions (It does not have any transitional or rotational motion), a UDF is used to define this type of motion with two degrees of freedom.

Spillway

In project number 10, the flow inside a wide-edge spillway is investigated. It should be pointed out that there is an elevation difference between the main and sub-channel for reasons like storing a portion of flowing water. The water enters the open channel with a mass flow rate of 65Kg/s and enters the second channel after colliding with the middle section of the spillway.