### Basics of Y Plus, Boundary Layer and Wall Function in Turbulent Flows

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25 July 48312 times

Before getting into the details of the turbulent models let us discuss an important concept known as $y^{+}$ and know how it is related to turbulence modeling, mesh generation process and how it is going to affect the CFD end result. It is important to know about the concept of wall $y^{+}$ or in general how the flow behaves near the wall, to consider the effects near the wall as it is the basis on which choice of the turbulence model is governed.

Basics of Y Plus, Boundary Layer and Wall Function in Turbulent Flows - 4.8 out of 5 based on 33 votes

### Career Path to CFD Engineer

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30 June 13601 times

In recent years, there has been growing interest by various engineering product companies to perform design simulation studies at different stages of product development to compete in the market. This has consistently resulted in increased requirement of skilled CFD resources and proving to be  a very good career opportunity for engineers aspiring to make a career in the interesting domain of heat transfer and fluid flows. However there seems to be a widespread confusion in the student community as to what skills are desired by these industries for a fresher to qualify.

Career Path to CFD Engineer - 4.9 out of 5 based on 23 votes

### Reviewing Governing Equations of Fluid Dynamics

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20 June 9582 times

As all of CFD, in one form or the other is based on the fundamental governing equations of fluid dynamics i.e. the continuity, momentum and energy equations these are called as the equations speaking physics. They are the mathematical statements of the three physical principles that govern fluid dynamics, hence it becomes very important to derive and discuss these equations. The current blog is motivated to review the very basis of governing equations understanding their physical meaning before actually deriving them.

Reviewing Governing Equations of Fluid Dynamics - 4.9 out of 5 based on 19 votes

### Introduction to Turbulence and Turbulence Modeling

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15 May 25835 times

Understanding the turbulent behaviour of fluids is one of the most fascinating, forbidding & critical problems in all of classical physics. Turbulence is omnipresent, as most of the fluid flows are turbulent in nature right from the microscopic level at interior of biological cells to the macroscopic scales of the geophysical and astrophysical phenomena including planetary interiors, oceans and atmospheres that represent the dominant physics of turbulent fluid flows.

Introduction to Turbulence and Turbulence Modeling - 4.8 out of 5 based on 25 votes

### CFD Modeling for Turbomachinery using MRF Model

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07 May 14972 times

Having already gone through our blog series of CFD modeling of turbomachinery, wherein we discussed about the CAD Repair and Grid Generation we shall now explore the different solver models available in a commercial software package. CFD modeling of flows within systems containing moving components (e.g. turbomachines) are performed by resorting to moving reference frames (MRF). There are a number of both generalized and specialized commercial softwares available that apply moving reference frames for both translating and rotating systems. MRF approach finds application in a wide range of systems like turbomachinery, mixing equipment, electric motors and generators, rotating passages & land and air vehicle motions. In the current blog we shall try to understand applying MRF model for turbomachinery explained with the help of a simple test case.

CFD Modeling for Turbomachinery using MRF Model - 4.7 out of 5 based on 16 votes

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