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Cornell SimCafe Fluids
This SimCafe Fluids Learning Track was developed by Dr. Rajesh Bhaskaran at Cornell University in partnership with Ansys. It serves as an e-learning resource to integrate industry-standard simulation tools into courses and provides a resource for supplementary learning outside the classroom. The following courses show how to solve selected fluid flow problems using Ansys Fluent. These tutorial-based courses follow the same high-level steps; starting with pre-analysis and ending with verification and validation. The successful completion of these simulation courses will provide a thorough understanding of how to set up a CFD simulation using Ansys Fluent.
1
Innovation Course
3D Bifurcating Artery
Bio-medical researchers have been relying on computational fluid dynamics to model and understand the physical mechanisms behind the formation and progression of hemodynamic disorders. Wall shear stress (WSS) exerted on the walls of the blood vessel due to the flow of...Read more
2
Innovation Course
Compressible Flow in a Nozzle
One of the most common application of a converging-diverging nozzle is in a supersonic wind tunnel. The inlet flow into the converging section is subsonic and as the cross sectional area of the converging section decreases, the flow velocity increases until it reache...Read more
3
Innovation Course
3D Transonic Flow Over a Wing
Airplane wings have streamlined cross-sections. When air flows over these wings, the aerodynamic forces generated on the wing maintains the aircraft in the air. The vertical force responsible for keeping the aircraft in flight is called the lift force. In aerodynamic...Read more
4
Innovation Course
2D Transient Diffusion
The motion of any substance from a high concentration area to a low concentration area is commonly referred to as diffusion. The process of diffusion takes place completely because of concentration gradients. Many examples of diffusion can be found in eve...Read more
5
Innovation Course
3D Convection in an Electronics Box
Cooling electronics components is important for smooth, reliable operation. The thermal power generated by the electronics is detrimental to their operation and often leads to premature failure and a shortened lifecycle. The thermal energy generated by these se...Read more
6
Innovation Course
3D Steady Diffusion
Diffusion is a process resulting from the movement of a substance from an area of high concentration to an area of low concentration. It is completely driven by a concentration gradient. A gas held in a container is a good example of diffusion. These fluid particles are contin...Read more
7
Innovation Course
Partially Premixed Combustion
Combustion includes two processes — thermal and chemical — in which a hydrocarbon fuel reacts with an oxidant to form products, accompanied by the release of energy in the form of heat. It is an integral part of various engineering applications like internal combusti...Read more
8
Innovation Course
Particles in Double Shear Layer
Multi-phase flows is simply any fluid flow system consisting of two or more distinct phases flowing simultaneously in a mixture with some level of phase separation at a scale well above the molecular level. A mixing layer is formed when two parallel streams of flui...Read more
9
Innovation Course
Turbulent Pipe Flow (LES)
Most fluid flows (gas or liquid) are turbulent in nature.These flows are characterized by unsteady and irregular fluctuations of transport quantities such as mass, momentum and species in both space and time. These fluctuations enhance flow mixing. Examples of these flows...Read more
10
Innovation Course
Vertical Axis Wind Turbine — Part 1
Nonrenewable energy resources are depleting, and renewable alternatives are gaining attention. One of the main renewable energy alternatives is wind energy. Wind turbines are used to capture the kinetic energy of the wind and convert it into electrical energy. De...Read more
11
Innovation Course
Vertical Axis Wind Turbine — Part 2
Humans utilize both renewable and nonrenewable sources of energy daily for power generation. With increased demands for clean energy as well as technological advancement bringing the overall costs down, the renewable power sector is thriving. Solar, wind, and hyd...Read more
12
Innovation Course
Steady Flow Past a Cylinder
Chimneys are tall cylindrical structures used for venting exhaust gases into the atmosphere. With their increased usage in industries, it is important to study the aerodynamic effects of wind on these chimneys. As wind speed increases, the pressure forces experienced...Read more
13
Innovation Course
Wind Blade Analysis for Wind Power
Renewable energy sources are crucial to meet our fast-growing energy demands. They are clean sources of energy and are slowly displacing conventional sources such as fossil fuels. Out of available renewable energy resources, wind energy is av...Read more
14
Innovation Course
3D Bifurcating Artery (Steady)
Today’s fast-paced lifestyle has forced changes to our eating habits, including, for some, the consumption of more fast-foods. These are usually highly processed and contain large amounts of sugars, unhealthy fats, and sodium. Unhealthy eating habits are detriment...Read more
15
Innovation Course
Steady-State Laminar Convection
On a daily basis, we use various heat transfer systems such as boilers, condensers, and radiators in heating and cooling applications. Most of these systems transfer thermal energy by convection. Convection is an important heat transfer mode where thermal energ...Read more
16
Innovation Course
Sudden Expansion in Laminar Flow
In a flow network, the flowing fluid encounters devices and attachments such as valves and bends. In addition to this, the fluids also may experience sudden expansions or contractions during the flow. Due to these inevitable pipe fittings and designs, the fluid e...Read more
17
Innovation Course
Flat Plate Laminar Boundary Layer
The external fluid flow can be defined as the flow around a body such that the body is completely submerged in it, for example, flow around turbine blades, submarines, and airplanes, etc. Engineers study and analyze these flows to understand and estimate the two ...Read more
18
Innovation Course
Turbulent Pipe Flow (RANS)
Most flows we encounter on a daily basis are turbulent. Ocean waves, oil transported in pipelines, and exhaust gases from the catalytic converter of an automobile are few examples of turbulent flow. The turbulent flow is chaotic where the fluid undergoes irregular fluctua...Read more
19
Innovation Course
Flow over an Airfoil
An airfoil is the cross-sectional shape of the wing of an airplane or a propeller blade. The airfoil body is designed to mainly produce two aerodynamic forces: (1) perpendicular to the free stream flow, which is called the lift force, and (2) a resistive force in the directio...Read more
20
Innovation Course
Turbulent Forced Convection
Convective heat transfer occurs when there is an energy exchange between a flowing fluid and a solid body. This energy exchange or heat transfer occurs at the surface of the solid which is in contact with the fluid and is primarily governed by the temperature differenc...Read more
21
Innovation Course
Laminar and Turbulent Jets
In many industrial applications, such as combustors and mixers, the flow introduced into the flow domain is in the form of a jet. A jet, which is a type of free shear flow, is exhaust from a confined source such as a nozzle into the quiescent surrounding. It is generall...Read more
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Innovation Course
Estimation of Lift Force
Most fluid flows are relatively simple, like the air flow over a car or water flow inside a pipe. A good understanding of flow physics helps engineers design efficient products. The flow characteristics for such problems c...Read more
23
Innovation Course
Supersonic Flow Over a Wedge
When the velocity of the object exceeds the speed of sound in the same medium, it is said to have achieved a supersonic speed. The Mach number, which is the characteristic non-dimensional number often used to describe the velocity of the object w...Read more
24
Innovation Course
Unsteady Flow Past a Cylinder
Many industries have chimneys for ventilation of exhaust gases or smoke produced by a furnace, boiler, etc. Due to their height, the external air flowing over these tall chimneys exert aerodynamic forces on them. The structural integrity of these chimneys is, the...Read more
