In this blog, we first explain the Navier-Stokes equations and definition of CFD, then the steps of solving a problem by computational fluid dynamics by ANSYS Fluent software (Pre-Processing, processing, and post-processing). Navier-Stokes equations The final form of Navier Stocks…
Introduction The dimensionless variable Y-plus represents the distance from the wall to the first grid cell's center, also, Y-plus is a distance with no dimensions. In other words, Y-plus renders the vertical space between the element's center and the wall…
What is Meshing in ANSYS? grid means converting the computational domain to smaller subdomains to solve momentum, turbulence, and energy equations and finally obtain results for all levels of the simulated model. Introduction It is critical to creating a high-quality…
Optimization process(DOE & RSM) in ANSYS- in Simple Words This article will discuss the optimization process and explain the related terminologies such as DOE & RSM, CCD, etc. Using an example, we will further introduce the mentioned methods and options.…
Introduction This section will investigate the evaporation process modeling in Ansys Fluent software. Two main methods will be discussed separately. Droplet evaporation & Multi-component evaporation. Droplet Evaporation The evaporation process should be studied from two different aspects; Heat transfer and…
Bosch Common Rail Injector Introduction and Purpose of the Case Study The Bosch fuel injection system delivers the metered quantity at high pressure to mix with compressed air inside the combustion chamber for efficient combustion, And The Bosch Common Rail…
Introduction In many industrial applications, the injected droplets don`t remain constant in shape and distortion occurs due to body forces and hydraulic instability. Thus, a breakup breaks the parent droplets into smaller children. The most well-known application is in sprays…
Introduction This article introduces discrete phase model (DPM) laws, particle types and available injection types. It has been tried to explain the most applicable injection types in detail. DPM Laws There are five particle types available in ANSYS Fluent software.…
Introduction In this article, different types of atomizers are introduced. Also, Plain-Orifice and Pressure Swirl atomizer models are discussed. Type of Atomizers ANSYS FLUENT offers sophisticated injection types for sprays that describe breakup phenomena. For most injections, you must provide the particles'…
Introduction This article investigates the general settings of any DPM simulation located in the Discrete Phase Model dialog box, including interaction, particle tracking and particle treatment. Interaction The following figure shows that the first window consists of three main…
DPM Abstract In this article, We overview the concept of the discrete phase model, assumptions, governing equations, and some limitations of the model. Overview of DPM In fact, any flow consisting of two or more phases is called multiphase. From…
An Introduction to DPM Spray Literally, sprays are considered a combination of droplets immersed in a gaseous phase known as the continuous phase. They`re employed in most industries and have a wide range of applications in drying, applying chemicals, washing,…
Tips About DPM To simulate the evaporation process of droplets, we need to define the thermophysical properties of Material accurately. Saturation vapor pressure, Binary diffusivity, latent heat, boiling point, and specific heat should be considered. These parameters are accessible in…
Introduction to DPM Diameter Distribution In Ansys Fluent software, five interpolation methods are available to determine the size of DPM particles, including linear, uniform, rosin-rammler, rosin rammler logarithmic and tabulated. In this article, we aim to investigate each specification and its limitations.…
Introduction By entering particles in a turbulent eddy, they try to follow it when they pass through the eddy. In this article, we aim to investigate two turbulent dispersion model available in Ansys Fluent software. Stochastic Tracking Cloud Tracking Stochastic…
Thermal models in porous media There are two available thermal models for the porous medium: The first model assumes the thermal balance between the fluid and the solid environment. This model assumes that the fluid and the solid are in…
Viscous & Inertial Resistance Coefficients We must have a laboratory sample of our porous (Porosity) medium to obtain viscous and inertial resistance coefficients. The pressure drop across the porous region at different velocities is measured in the experiment process. Then, we…
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