Radiation, ANSYS Fluent CFD Simulation Training Package, 10 Practical Exercises
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Radiation ANSYS Fluent CFD Simulation Training Package
This CFD training package is prepared for BEGINNER, INTERMEDIATE, and ADVANCED users of ANSYS Fluent software who are interested in the Radiation modules, 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.
The solar charge is a type of solar ray tracing as an algorithm for transmitting solar radiation energy, which can only be used for three-dimensional models. In project number 1, the characteristics of solar radiation on surfaces and objects include longitude 36.2605 degrees, latitude 59.6168 degrees, and time zone equivalent to 4.5. In the first case, no cover layer is provided for the gasoline tank, and in the second case, a 0.003 m cover layer is used for the tank’s perimeter.
In project number 2, using the Solar Ray Tracing model, the effects of radiation from the sun in an environment where airflow is established are investigated. In addition, the conduction heat transfer was considered in solid objects. The amount of radiation received was modeled with the geographical characteristics of Baku (The capital of Azerbaijan) at 8 AM and 3 PM on June 21st. The external air velocity was 10 m / s at 27 degrees Celsius. Soil, brick, and wood material specifications were given for land, house, and tree.
Project number 3 simulates the ventilation, air circulation, and heat transfer in a room. The heat is emitted by people, objects, and electrical equipment inside the room. A man, a computer, and two lamps are modeled inside the room; So that man with a density of 985 kg.m-3, a specific heat capacity of 3500 j.kg-1.K-1, and thermal conductivity of 0.5 Wm-1.K-1 are defined.
In project number 4, steady airflow enters the domain from the bottom of the computer room by several inlets and exits the domain from several outlets on the ceiling, considering Radiation heat transfer. This air conditioning method is new and commonly used in office environments. This method provides more energy efficiency since the flow naturally increases due to density difference and buoyancy body force. One of the room’s four main walls is exposed to a constant heat flux equal to 194 W/m2.
In project number 5, heat transfer inside a room and a balcony is e. The balcony has a glass roof and one glass wall. Due to the radiation of sunlight, both room and balcony become warmer and natural convection plays an important role in circulating the flow inside these spaces. The standard k-epsilon model is exploited to solve turbulent flow equations. The P1 solar tracing model simulates the solar rays entering the computational domain. The energy model is activated to calculate the temperature distribution in the domain.
Project number 6 simulates the airflow through the space between the two walls of the double façade of the building. To move the airflow upwards in this space based on the density changes caused by the pressure and temperature changes, the boundary condition of the pressure equal to the atmospheric pressure at the inlet and outlet of this space has been used. The main cause of temperature changes in solar energy on the plates of these shells; therefore, the radiation energy model of Discrete Ordinates (DO) and the solar ray tracing model have been used.
Project number 7 simulates the radiation of solar rays into the room’s interior, considering the effects of a wooden partition as solar shading and a double glazing glass façade. Argon gas has accumulated in the space between the two glasses of the double glazing;
Project number 8 problem simulates the heat transfer inside a mosque. In the present case, it is assumed that heat transfer takes place in two modes of convection and radiation. In fact, the building’s indoor heating source is powered by solar energy and a heat source used on the mosque’s ground floor. The heat transfer between the sidewalls of the mosque, the roof of the mosque, and its dome is done with the free airflow of the surrounding environment with a temperature of 309 K and the heat transfer coefficient of 10 W.m-2.K-1.
In project number 9, heat transfer in a conical solar collector containing water fluid is simulated and analyzed. The cubic fluid domain consists of an inlet (velocity inlet type, 1m/s) and a pressure outlet. The conical collector consists of an inlet (mass-flow type, 0.0116 Kg/s) and a pressure outlet. The conical solar collector absorbs the sunlight and warms the water inside its tank.
Project number 10 simulates a solar heat exchanger. This system consists of two parts; The water flow moves in the central part of the heat exchanger and the airflow is in the gap installed in the front plate of the heat exchanger. The heat exchanger absorber wall is exposed to solar radiation and absorbs heat through radiant heat transfer. This means that the air gap temperature in front of the absorber plate rises as the sun heats up.
You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.