The Powerpoint presentation discusses about the Introduction to CFD and its Applications in various fields as an Introductory topic for Mechanical Engg. Students in General.
Control of Continuous Distillation Columns
0 INTRODUCTION/PURPOSE
1 SCOPE
2 FIELD OF APPLICATION
3 DEFINITIONS
4 GENERAL DESCRIPTION OF A DISTILLATION COLUMN
5 REGULATORY CONTROL
5.1 Composition Control
5.2 Mass Balance Control
5.3 Design of Feedback Control Systems
5.4 Pressure and Condensation Control
5.5 Reboiler Control
6 DISTURBANCE COMPENSATION
6.1 Feed-forward Control
6.2 Cascade Control
6.3 Internal Reflux Control
7 CONSTRAINT CONTROL
7.1 Override Controls
7.2 Flooding
7.3 Limiting Control
8 MORE ADVANCED TOPICS
8.1 Temperature Position Control
8.2 Inferential Measurement
8.1 Floating Pressure Control
8.2 Model Based Predictive Control
8.1 Control of Side-streams
8.2 Extractive/Azeotropic Systems
9 REFERENCES
TABLES
1 SYMPTOMS OF IMBALANCE AND THE REGULATORY VARIABLES
2 PRACTICAL LINKAGES BETWEEN CONTROL
(P, R, B, C) AND REGULATION VARIABLES
(h, r, d, b, c, v)
3 COMPOSITION REGULATION
4 COMPOSITION REGULATION - VERY SMALL FLOWS
This presentation gives a general idea on simulation in Aspen HYSYS software. It gives an knowledge on the selection of simulator and the selection of equation of states in simulators. It also gives a brief idea on the thermodynamics behind the simulators
The Powerpoint presentation discusses about the Introduction to CFD and its Applications in various fields as an Introductory topic for Mechanical Engg. Students in General.
Control of Continuous Distillation Columns
0 INTRODUCTION/PURPOSE
1 SCOPE
2 FIELD OF APPLICATION
3 DEFINITIONS
4 GENERAL DESCRIPTION OF A DISTILLATION COLUMN
5 REGULATORY CONTROL
5.1 Composition Control
5.2 Mass Balance Control
5.3 Design of Feedback Control Systems
5.4 Pressure and Condensation Control
5.5 Reboiler Control
6 DISTURBANCE COMPENSATION
6.1 Feed-forward Control
6.2 Cascade Control
6.3 Internal Reflux Control
7 CONSTRAINT CONTROL
7.1 Override Controls
7.2 Flooding
7.3 Limiting Control
8 MORE ADVANCED TOPICS
8.1 Temperature Position Control
8.2 Inferential Measurement
8.1 Floating Pressure Control
8.2 Model Based Predictive Control
8.1 Control of Side-streams
8.2 Extractive/Azeotropic Systems
9 REFERENCES
TABLES
1 SYMPTOMS OF IMBALANCE AND THE REGULATORY VARIABLES
2 PRACTICAL LINKAGES BETWEEN CONTROL
(P, R, B, C) AND REGULATION VARIABLES
(h, r, d, b, c, v)
3 COMPOSITION REGULATION
4 COMPOSITION REGULATION - VERY SMALL FLOWS
This presentation gives a general idea on simulation in Aspen HYSYS software. It gives an knowledge on the selection of simulator and the selection of equation of states in simulators. It also gives a brief idea on the thermodynamics behind the simulators
The presentation gives glances of the importance of CFD analysis in engineering design with an illustration/ case study. For more details, follow the webinar "Role of CFD in Engineering Design" on https://www.learncax.com/knowledge-base/blog/by-author/ganesh-visavale
The lecture was delivered by me for IIChE students chapter on the theme of Student-Industry Interaction at Bharati Vidyapeeth on 8th Feb'14. Foe my blogs kindly refer: https://www.learncax.com/knowledge-base/blog/by-author/ganesh-visavale
The flow across an airfoil is studied for different angle of attack. The CFD analysis results are documented and studied for different angle of attack using fluent & gambit.
Diapositivas de la tercera sesión del ciclo formativo sobre la Bolsa que ofrece los martes a las 20h, gratuitamente, La Escuela de Inversión.
En esta ocasión cubriendo las bases sobre la representación del precio en un graficador.
Dynamic Analysis of an Offshore Wind Turbine: Wind-Waves Nonlinear InteractionFranco Bontempi
An offshore wind turbine can be considered as a relatively complex structural system
since several environmental factors (e.g. wind and waves) affect its dynamic
behavior by generating both an active load and a resistant force to the structure’s
deformation induced by simultaneous actions. Besides the stochastic nature, also
their mutual interaction should be considered as nonlinear phenomena could be
crucial for optimal and cost-effective design. Another element of complexity lies in
the presence of different parts, each one with its peculiar features, whose mutual
interaction determines the overall dynamic response to non-stationary environmental
and service loads. These are the reasons why a proper and safe approach to the
analysis and design of offshore wind turbines requires a suitable technique for
carrying out a structural and performances decomposition along with the adoption of
advanced computation tools. In this work a finite element model for coupled windwaves
analysis is presented and the results of the dynamic behavior of a monopiletype
support structure for offshore wind turbine are shown.
The presentation was made at the "Business Meet on Applications of solar drying systems in domestic, industrial and commercial applications", SPRERI, Anand, India.
It presents the advantages of CFD as a design tool to design better solar drying systems.
For my blogs kindly refer: https://www.learncax.com/knowledge-base/blog/by-author/ganesh-visavale
Computational fluid dynamics for chemical reactor designrita martin
Computational fluid dynamics improve efficiencies in fluid flow, heat and mass transfer processes. Computational Fluid Dynamics is a branch of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. Computational fluid dynamics Found Its self in various industrial applications, Biomedical, Electronics, Defense, Industrial,Environmental, Civil and drug delivery systems
Computational fluid dynamics (CFD) is a powerful tool to simulate, analyze, and optimize designs. The leading CFD providers will discuss software features and functionality such as flow features and benefits, solver technology, as well as describe an example of CFD use in the real world.
Using Modelica and FMI to evaluate requirements compliance early in system d...Modelon
AGENDA
- The Functional Mockup Interface: FMI
- A Real-World Example: Active Grill Shutter Controls
- Vehicle Thermal Management with Modelica
- Continuous Validation of System Requirements
- Intermediate results from ITEA3 MODRIO project
- Iterative Controller Development Using Rational Rhapsody & Dymola
- Conclusions
Simulation technologies are becoming more and more important when it comes to development processes, process optimization,
mechanical strength examination, accident analysis and lots of other technical questions. To deal with these
application areas, the Computational Fluid Dynamics (CFD) is increasingly gaining importance for figuring out solutions
for technical problems.
The weyer group has been deploying the
CFD technology for years in order to deal
with a variety of ways of looking at a
problem. This procedure has proven to be
a very good alternative since the
experimental research of complex fluid
flows requires a highly sophisticated
technique and is sometimes downright
impossible to execute.
Seminar Presentation file for "Autodesk CFD for better building design" by Mr. ZHU ge.
Event Details
Seminar: Autodesk CFD for Better Building Design
Co-organized by: Autodesk / HKIBIM / IVE BIM Centre
With your BIM model, Autodesk® Simulation CFD software can provides computational fluid dynamics and thermal simulation analysis to help you create better interior and exterior design. A range of CFD modeling and thermal modeling tools are included for architectural and mechanical, electrical, and plumbing (MEP) applications. Model radiant heat transfer and occupant comfort; better predict contaminant dispersion and smoke migration in and around buildings. Study the long-term effects of diurnal heating. The Design Study Environment allows you to automate the creation of design studies, compare critical values, and predict design performance, optimize designs, and validate behavior before construction.
For more information about Autodesk® CFD: http://www.autodesk.com/products/cfd/overview
Seminar details:
Date & Time: 9-Sep-2015; 7:00pm – 8:30pm
Speaker: Ge Zhu, Technical Sales Specialist, Autodesk
He is major in Engineering Thermophysics, Master of Huazhong University of Science and Technology. He has 7 years for electrical thermal and datacenter CFD simulation experience.
Location: Lecture Theater LT-01, G/F, IVE (Morrison Hill), 6 Oi Kwan Road, Hong Kong
Agenda:
1. Why Simulation
2. Auotdesk CFD Features
3. Key Application Areas of Autodesk CFD
For any enquiry, please contact Mr. Waiky Leung at waiky.leung@autodesk.com
Ang Chong Yi Navigating Singaporean Flavors: A Journey from Cultural Heritage...Ang Chong Yi
In the heart of Singapore, where tradition meets modernity, He embarks on a culinary adventure that transcends borders. His mission? Ang Chong Yi Exploring the Cultural Heritage and Identity in Singaporean Cuisine. To explore the rich tapestry of flavours that define Singaporean cuisine while embracing innovative plant-based approaches. Join us as we follow his footsteps through bustling markets, hidden hawker stalls, and vibrant street corners.
At Taste Of Middle East, we believe that food is not just about satisfying hunger, it's about experiencing different cultures and traditions. Our restaurant concept is based on selecting famous dishes from Iran, Turkey, Afghanistan, and other Arabic countries to give our customers an authentic taste of the Middle East
Roti Bank Hyderabad: A Beacon of Hope and NourishmentRoti Bank
One of the top cities of India, Hyderabad is the capital of Telangana and home to some of the biggest companies. But the other aspect of the city is a huge chunk of population that is even deprived of the food and shelter. There are many people in Hyderabad that are not having access to
Piccola Cucina is regarded as the best restaurant in Brooklyn and as the best Italian restaurant in NYC. We offer authentic Italian cuisine with a Sicilian touch that elevates the entire fine dining experience. We’re the first result when someone searches for where to eat in Brooklyn or the best restaurant near me.
Key Features of The Italian Restaurants.pdfmenafilo317
Filomena, a renowned Italian restaurant, is renowned for its authentic cuisine, warm environment, and exceptional service. Recognized for its homemade pasta, traditional dishes, and extensive wine selection, we provide a true taste of Italy. Its commitment to quality ingredients and classic recipes has made it a adored dining destination for Italian food enthusiasts.
2. • CFD is a simulation tool, which uses a power computer
and applied mathematics to model fluid flow situations.
• In 1928, the application of CFD started in fluid flow
• Daimler Chrysler was the first company to use CFD in
Automotive sector.
• Speedo was the first swimwear company to use CFD
• The adoption of CFD technology by food engineers
began in the 1990s.
Computational fluid dynamics approach
3. It provides qualitative and sometimes quantitative prediction
of fluid flow by
• Mathematical modelling (partial differential equations),
• Numerical methods (discretization and solution techniques),
• Software tools (solvers, pre- and post-processing utilities).
Computational fluid dynamics approach
4. Fundamentals
The fundamental basis of almost all CFD problems uses the set of
Navier–Stokes equations
• Governing the equation: conservation equations (Conservation of
mass, conservation of momentum and conservation of energy)
• Numerical analysis: The most important techniques are finite
difference, finite elements and finite volumes.
• Solving the flow problems
• Interpreting the solutions
Fundamentals of CFD
5. The analyst should have a knowledge to state
the problem and to use scientific knowledge to express
it mathematically
Stages in CFD
Pre-
processing
Processing
Post-
processing
Evaluation
7. Pre-processing: meshing
Create shape of the problem
domain
CAD/CAE integration
Engineering drawings
Coordinates include Cartesian
system (x,y,z), cylindrical system
(r, θ, z), and spherical system(r, θ,
Φ)
Stages in CFD
8. Initial condition involves knowing the state of
pressure (p) and initial velocity (u) at all points
in the flow.
Boundary conditions such as walls, inlets and
outlets largely specify what the solution will be.
Geometry of problem is defined .
Volume occupied by fluid is divided into discrete
cells.
Stages in CFD
Pre-processing: Initial boundary conditions
10. • It involves computer to solve the
mathematical equations of fluid
flow
• Solves thousands of equations
• Equation discretization
Sample grid established by
Gambit of FLUENT
Processing
11. • Calculation of derived variables
• Calculation of integral parameters: forces,
moments
• Visualization (usually with commercial
software)
• Simple X-Y plots
• Simple 2D contours
• 3D contour carpet plots
• Animations (dozens of sample pictures in
a series of time were shown continuously)
Post-Processing: Evaluation of
generated data
12. • Gives much better and deeper understanding of what is happening in a
particular process or system.
• Less time and cost than would be involved in laboratory testing.
• It can answer many ‘what if’ questions in a short time.
• Reduce scale-up problems
• It is particularly useful in simulating conditions where it is not possible to
take detailed measurements such as high temperature or dangerous
environment in an oven.
• Since it is a pro-active analysis and design tool, it can highlight the root cause
not just the effect when evaluating plant problems.
Advantages of CFD
14. 14
Where is CFD used? (Aerospace)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
F18 Store Separation
Wing-Body Interaction Hypersonic Launch
Vehicle
15. 15
Where is CFD used? (Appliances)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Surface-heat-flux plots of the No-Frost
refrigerator and freezer compartments helped
BOSCH-SIEMENS engineers to optimize the
location of air inlets.
16. 16
Where is CFD used? (Automotive)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
External Aerodynamics Undercarriage
Aerodynamics
Interior Ventilation
Engine Cooling
17. Where is CFD used? (Biomedical)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Temperature and natural
convection currents in the eye
following laser heating.
Spinal Catheter
Medtronic Blood Pump
18. 18
Where is CFD used? (Chemical Processing)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Polymerization reactor vessel - prediction
of flow separation and residence time
effects.
Shear rate distribution in twin-
screw extruder simulation
Twin-screw extruder
modeling
19. 19
Where is CFD used? (HVAC&R)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Particle traces of copier VOC emissions
colored by concentration level fall
behind the copier and then circulate
through the room before exiting the
exhaust.
Mean age of air contours indicate
location of fresh supply air
Streamlines for workstation
ventilation
Flow pathlines colored by
pressure quantify head loss
in ductwork
20. 20
Where is CFD used? (Hydraulics)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
21. 21
Where is CFD used? (Marine)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
22. 22
Where is CFD used? (Oil & Gas)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Flow vectors and pressure
distribution on an offshore oil rig
Flow of lubricating
mud over drill bit
Volume fraction of water
Volume fraction of oil
Volume fraction of gas
Analysis of multiphase
separator
23. 23
Where is CFD used? (Power Generation)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
Flow pattern through a water
turbine.
Flow in a
burner
Flow around cooling
towers
Pathlines from the inlet
colored by temperature
during standard
operating conditions
24. 24
Where is CFD used? (Sports)
• Where is CFD used?
– Aerospace
– Appliances
– Automotive
– Biomedical
– Chemical Processing
– HVAC&R
– Hydraulics
– Marine
– Oil & Gas
– Power Generation
– Sports
26. CFD to analyse the flow and performance of process equipment, such as
• Baking ovens
• Refrigerated display cabinets
• Stirred tanks
• spray dryers
• Heat exchangers
• some other equipment. In design and development,
CFD programs predict
• Fluid flow behaviour,
• Transfer of heat, mass (such as in perspiration or dissolution),
• Phase change (such as in freezing, melting or boiling),
• Chemical reaction (such as combustion or rusting),
• Mechanical movement (such as an impeller turning, pistons, fans or
rudders)
• Stress or deformation of related solid structures (such as a mast
bending in the wind).
Application of CFD in food industry
27. Application of CFD in food industry: Drying
Problem
Descriptions
Model geometry Software Findings Author
Evaluation of
droplet
drying models in
a spray dryer
fitted
with rotary
atomizer
using CFD
simulation
3D Fluent The concept of
particle rigidity
prediction in a CFD
simulation was
explored and the
effect of initial feed
moisture content on
the drying models
was also studied.
Woo et al.
(2008a)
Simulation of
industrial scale
spray
dryer attached
with
a Fluidized bed,
using Reaction
Engineering
Approach (REA).
2D Fluent Smaller spray cone
angle facilitates easy
movement of particles to
the fluidized bed. The
accuracy of REA
model in predicting
the single droplet
drying kinetics was
also explained.
Jin and Chen
(2009)
28. Application of CFD in food industry: Cold
storage.
Contours of iso-temperatures in the most sensitive plane of a refrigerated truck (a)
without air ducts (b) with air ducts
29. Application of CFD in food industry:
Pasteurization
a)
Temperature (C) profiles of pasteurisation (85C) process of milk in stationary
position of can at (a) 60 s (b) 120 s (c) 240 s and (d) 360 s.
b)
c) d)