Fluid Codes Ltd was founded in 1997 to address the fluid simulation requirements of industrial and academic organizations in the Middle East Region. Fluid Codes activities expand to encompass the full range of development, production, consultancy and support services offered to a broadly based engineering community throughout the Middle East Area.
Fluid Codes is the ELITE Channel Partner of ANSYS Inc., authorized with exclusive rights to distribute and provide certified training and support for ANSYS Engineering Simulation Solutions in the Middle East, Europe, and Africa through offices in Saudi Arabia, United Arab Emirates and Bulgaria.
00:04 Introduction to CFD and attendee background 03:22 Understanding background is important for CFD simulation 08:28 Ansys is a software used for simulating computational fluid dynamics. 11:32 ANSYS focuses on solving multiphysics problems by applying multiple physics 16:41 Simulation is integral to product development across all industries. 18:58 Ansys provides a framework for software to do computational fluid dynamics. 23:46 Connecting different softwares and physics for system level simulations 26:19 Importance of combining data analytics with simulations 30:55 Introduction to Ansys Workbench and its capabilities 33:08 Introduction to parameter study and optimization in Ansys training 38:28 Analytical fluid dynamics (AFD) for quick answers in simple cases. 40:54 Importance of mathematical models in solving industrial problems 45:39 Difference between Lagrangian and Eulerian forms 47:50 Understanding different frames of reference in CFD 52:28 CFD process overview 54:51 CFD can solve various transport phenomena 59:40 Simulations are essential in every stage of product development life cycle. 1:02:32 Importance of conserving mass and momentum in CFD simulations 1:07:33 Understanding the importance of geometry in CFD simulation 1:09:50 Ansys SpaceClaim is a direct modeling tool for creating and preparing geometry for CFD analysis. 1:14:12 Introduction to Direct Modeling in SpaceClaim 1:16:11 Spaceclaim is used to create and clean geometry for simulation purposes. 1:20:23 Geometry repair and preparation for simulation 1:22:26 Sketching and creating 3D bodies using pull in Ansys 1:26:55 Selection operations and mouse controls in SpaceClaim 1:29:20 Using STEP or Solidworks files can minimize data errors in simulation preparation. 1:33:47 Creating and modifying points in Ansys using pull tool 1:36:48 Using the pull tool in Ansys for various operations 1:41:22 Demonstration of using multiple functions in Ansys for CFD simulation. 1:45:01 Creating and using planes for cutting and splitting bodies in Ansys training 1:49:07 Splitting faces using Ansys Split tool 1:51:16 Geometry repair is crucial for successful CFD and FEA calculations. 1:55:33 Identifying and addressing gaps and disconnected edges in the CFD model 1:58:11 Visual inspection of gaps before performing operations is crucial 2:02:37 Space claim has three important modes and four main tools for performing operations. 2:04:49 The pull tool in Ansys works for all three kinds of geometries: surface, line, and point. 2:09:30 Moving and copying objects within Ansys training 2:11:32 Demonstration of precise body movement in Ansys training 2:16:11 Parameters in Ansys can be used to parameterize geometry, mesh, solver, and physics. 2:19:25 Introduction to creating a mixing tree in Ansys workshop 2:24:05 Split body is best for removing material from pipe in Ansys training 2:26:13 Introduction to using Section Mode in Ansys workshop 2:31:32 Extraction of fluid volume for CFD analysis in a pipe 2:33:50 The extraction of the fluid is not part of the workshop. 2:54:48 Utilizing split body feature to remove excess material 2:57:05 Removing material using volume extraction technique 3:04:41 Utilize sketch mode to create geometry in ANSYS 3:06:52 Selecting faces to enclose fluid volume 3:11:41 Learn to use selection tools and modify geometry efficiently 3:14:11 Consider the impact of fillets on fluid flow analysis. 3:19:46 Understanding the geometry for CFD analysis 3:22:08 Analyzing geometry using section mode and 3D mode 3:27:55 Analyzing external heat transfer and boundary conditions 3:30:20 Selection and enclosure in Ansys training 3:35:03 Understanding heat generation and convection in Ansys training 3:37:24 The boundary outlet should be far away from the obstacle. 3:47:01 Overview of Ansys CFD workflow 3:50:10 Introduction to starting Fluent in standalone mode 3:54:52 Understanding the licensing and parallel processing in Ansys CFD 3:57:11 Ansys CFD tutorial: Import geometry and generate mesh easily 4:02:34 Understanding shared topology in ANSYS for fluid flow simulations 4:05:31 Understanding share topology in CFD modeling 4:10:34 The need for a boundary layer in CFD. 4:13:27 Overview of setting up a CFD solution 4:18:24 Monitoring solution convergence criteria in CFD 4:20:45 Explanation of mass conservation equation and visualization of temperature in Ansys CFD 4:25:55 Using high performance computing for faster CFD simulations 4:28:24 Introduction to Fluent Missing Workflow 4:35:05 Boundary layer concept and preference for hex mesh in CFD analysis 4:37:25 Connecting tetrahedral and hexahedral elements in CFD 4:42:34 Understanding how to make geometry watertight 4:45:16 Import and export workflows for Fluent simulations 4:50:54 Selecting between shared memory and distributed memory for running Ansys. 4:54:14 Importance of clean geometry for effective CFD analysis 4:59:33 Learning about the functions within the ANSYS interface 5:02:36 Introduction to creating and saving workflows in Ansys
Hi Dr, I am working on a 3D simulation model to study the behaviour of high pressure CO2 leak in atmospheric environment. I have a question regarding patching my CO2 inlet conditions (temperature, pressure) . I initialize the model using standard initialization > all zones. This is how I patched my inlet conditions. Could you please advise if this is the correct way of doing this? how do I then patch my inlet conditions? do I have to create a new boundary for CO2 inlet and select that? I went to Cell Registers>New>Boundary and selected the co2_inlet boundary zone. I did not change any of the default settings. After standard initialization, I clicked on patch, in the patch window, selected the boundary that I created earlier and patched the pressure and temperature of the CO2 (50 dc, 5MPa). I would appreciate your advise on this. Thank you!
AsalaamuAlaiykum. I obtained a master's degree in Atmospheric Sciences at the University of Leeds in the UK. I recently came across your company, as I have specialised in geophysical fluid dynamics, particularly covering convection, stability analysis in rotating and non-rotating flows. By no means am I an expert in business now but I wanted to stay away from the field for a few years, as I wanted to take a break from academia and the demands required by the subject. Upon completing my specialism in December 2019, my plan was to learn more about the nature (and complexities) of working in the world of business and civil service. I now believe that I am ready to return to the field however I know that fluid dynamics is by far one of the most complicated fields which spans across the scientific disciplines. As such, I am nearing the completion of releasing my initial paper solving the 3-dimensional navier stokes equations. My initial findings are that these solutions are smooth for all time. As you will know, this is no small feat and my paper will be the first in successfully solving the Navier Stokes problem analytically. Finally, I have taken an interest in some of your work and have recently followed you on Instagram. I will drop a message to your team inshaAllah as I have taken an interest in your work.
I tried this for axial momentum source [N/m3] but fluent keeps saying "Incorrect expression unit. Expression Unit [], Required Unit [kg m^-2 s^-2]". The expression is [kg/m^2s^2] that is the same thing but apparently not..how can i fix it? Thanks
thanks. I design Coplanar waveguide and grounded coplanar waveguide. Do I really need to draw an integral line? I don't understand why some RU-vid tutorials just draw a port and analyze it.
What i heard is: "Hi, i'm a scientist, i learned incredible things about how nature works and if you give me money, i can show you how to create weapons to kill people." Now you might reasonably think: "is that a shame? I've never thought about it" but your psychological defense mechanisms will reply something like: "If I don't do it, others will."
The mesh was pre-generated in Fluent Watertight Meshing using a polyhedral volume fill. A template is available to handle battery geometry such as the one demonstrated here with multiple repeating cell patterns. The sizing was defined to respect the curvature of the rounds - typically 18 degrees is the default value for CFD meshing. A proximity control was used to ensure thin components such as the electrodes are resolved with at least 2 layers of elements in the thickness direction, which will adjust the size accordingly.
The bandwidth can be calculated from the s11 graph. In the case of defining the antenna to be matched under -10db. a y marker could be placed by right click on the graph-->Add marker --> Add y-marker. then placing the y-marker on -10dB the bandwidth could be calculated from the X values (frequencies) as it is the difference between f2-f1=Bandwidth. f2 is the high frequency (2nd frequency) at which the S11 is intersecting the marker and f1 is the low frequency (1st frequency) at which the s11 and the marker are intersecting. By this you have the range of frequencies (Bandwidth) that the antenna is said to be matched under -10dB.
I'm really interested in this simulation. Can I have a detailed tutorial to achieve this result? or the fluent file? Thank you for your quick return. I can give you my email address if needed.
Hi I have found a bug during using this solution in 2021 R2 version, 2D axissymetric geometry - Volume calculated by Expressions is way different from a volume calculated by Results/Volume Integrals/Volume.
Something I don't understand. The RCS is the area in which these signals (from the targeted aircraft such as the drone) emit? beyond that they no longer emit? So how do airplanes, however big, get detected from so far away? An A380 has an RCS of 150m2. If we represent the RCS by a circle (not the case, I'm just trying to show what I mean), that's 6m in radius. So the waves would emit over a 6m radius. That would mean that beyond these 6m it is logically undetectable However, it is estimated that an F16 with an RCS of 4m2 is detectable at almost 200km...However its RCS is not as large If Rcs= area in which these famous signals are contained and exceed, why are they captured from so far away?
No. The RCS is determined by how much radiation an object reflects back. Radars work by emitting waves and than listen to what is reflected back. That happens A LOT of times in each second. In most cases, bigger object = more waves reflected = bigger RCS. It's important to note that not all the waves emitted by the radar are reflected back by the object. So, there are ways of reflecting those waves in different directions so only a small part of them return the the radar. That's why planes like the F-22, F-35, B-2 or B-21 look the way they look. Their shape reflect the waves away from them and away from the emitter. In addition, these aircrafts are built from radar absorbing materials and are coated with radar absorbing paint.
i think the F-16 is detectable at 200km because they used a Military grade Radar, i don't think we have information on a Military Grade Radar detection range of an A380
@@Remy1738 Adding to that, there are also other techniques employed such as doppler. Even if the reflected power is low and almost indistinguishable from the noise, moving object also creates a doppler shift in the frequency.
Dear @@medoabotalb5409 You can use any Reduction Function along with the variable 'StaticTemperature' and the required part/location available under the locations (Cell Zones & Boundary Surfaces) MassFlowAve(StaticTemperature,['outlet']) By default, Static temperature is calculated from Cell Centroid in Fluent Expressions
This is an example of multiphase simulation based on the Volume of Fluid (VoF) approach. In cases like this one, it is important to well capture the small features of the interface between different phases, which is coloured in green in this video. Ansys Fluent has a really interesting approach, which automates the refinement of the computational grid across this interface during the runtime for better accuracy. This approach is called Polyhedral Unstructured Mesh Adaption (PUMA).
hi dear teacher. I watched your video and it is very helpful. I have a question for you. I have liquid and vapor zones on thermosyphon heatpipe. I am preparing a jou file. I created two regions named region_liq and region_vap with adapt. but I couldn't find how to patch with TUI. I tried many times but it didn't work. please can you help me with this. thank you. best regards.
Hi Cetin. Thank you for your question. You have to make sure that your cell zones and cell registers names do not contain any upper cases. Now there are two solutions, if you are using multiphase or not. If you are using multiphase: solve patch my_phase () my_region () my_variable my_initialization Of you are not using multiphase: solve patch my_region () my_variable my_initialization where my_initialization can be an expression or a number thank you and let us know whether you need further information. Enjoy your Fluent Adventure!!
@@fluidcodes-ansys-elite-partner Hi Dear Teacher, Thank you very much for your help and well wishes. You explained it really well. I want to ask you one more question. What does mem-per-cpu found in sh file mean? I set it to 8G. but how can i set this value correctly.
@@cetinyavuz2115 Dear Cetin, Thank you for your message. Can you please clarify which file you are talking about? I am assuming it is a PBS/Slurm job submission file. Correct? Thanks
@@fluidcodes-ansys-elite-partner yes teacher it is a slurm job submission file. I enter the value I mentioned as 4 and 8GB. but I don't know exactly how to calculate and what it means.
Dear Osama, Thank you for your question. You can patch a domain with time dependent expressions. However, this will be like taking a snap shot of the expression at the given time, as this will modify your field only for this picture.
HFSS has the capabilities to perform EMI/EMC simulation. You can take advantage of Ansys EMI Scanner in HFSS 3D Layout (which is the layout interface of HFSS) to identify the design issues due to EMI during operation.
Rahul thank you for such a concise and useful talk, your company is doing great work in UAE. Would love to see recording of the talk, that you mentioned, where you discussed the areas of development of a aircraft in detail. Kindly share tutorials and walk throughs for the areas involved such specially analysis of composite structures, metallic components and their fluid surface interaction.
