A numerical solution has been prompted in order to design a water-oil separator using a cylindrical bar and backward step afterward as a reservoir. Postprocessing has been carried out using ParaView for a primitive simulation implementing basic filters available. An advanced post-processing method has also been initialized using Blender, thereby generating more realistic outcomes. Whether it's interesting, you may contact for obtaining case files. Conditions
- Solver: InterFoam, MPI reconstructPar - Geometry and grid: 3D, assembly mesh - Flow model: Laminar - Domain: Transient - Phases: Water and air Keep on simulating the real incidents!
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The Kelvin–Helmholtz instability emerges in case the velocity shear is distracted in a single continuous fluid. The phenomenon also occurs whilst the velocity difference is an issue throughout the interface between two fluids. It is a common physical incident that can be observed easily in nature; clouds, ocean and so forth. The footage comprises experimental analysis which was carried out by Department of Applied Mathematics and Theoretical Physics (DAMTP) at the University of Cambridge [1]. The numerical study is conducted as to examine the incident in the OpenFOAM environment (ubuntu, openfoam v1612+). The constraints of the numerical analysis can be gone over as follows: - Geometry: 3D, 30 degrees tilted cabinet - Domain: Transient - Phases: Salty-water and water - Method: interFoam, MPI reconstructPar, assembly mesh The footage of the numerical analysis: Any further question would be welcomed such as more on constraints, foam files etc.
All best. A CFD simulation has been carried out as to modeling a novel designed sluice which includes two inlets and one outlet. The sluice is a water channel that is used to control its head by a gate. What is a sluice? The simulation has been generated in OpenFOAM environment (v1612, Linux). The constraints of simulation might be concluded as follows: Solver: OpenFOAM - Interfoam Multiphase: VOF - Decomposition for initializing and patching phases Inlet: Mass flow rate (0.02 kg/s) Outlet: Pressure outlet Turbulence Model: k-epsilon standard If you are willing to have a look to simulation documents, you can find the OpenFOAM files (0, constant, system, and mesh) where I have attached at the end of the page. For instance, you might examine the effect of the turbulence model which would properly make you amazed. Thank you for watching. Stay tuned for more!
A numerical study has been revealed rely on car body types. C series (sedan, estate, coupe) and A series (hatchback) of Mercedes are selected models as to carry out a numerical comparison among bodies. To sustain credibility, the frontal design of A series has been changed with C series (C facelift to A). CFD studies have been conducted in OpenFOAM (pisofoam) environment. Here the constraints in accordance with numerical simulation: Environment: OpenFOAM (pisofoam) Turbulence: LES (dynamic equation) Inlet velocity: 16 m/s Mesh: Fine, inflation through boundaries (4 cells) Contours: Turbulent Kinetic Energy and Velocity Pre-calculated Drag Coefficients: COUPE: (a*1.1999) ESTATE: (a*1.2701) SEDAN: (a*1.0404) HATCHBACK: (a) If you are willing to take OpenFOAM files a glance, you would be welcomed to get the files related simulation at the end of the page (grid structures, 0, constant, and system files). Here the results of CFD simulation: Thank you for watching. For more, keep with me up.
“Trust me I'm a/an...” Scientifically speaking, emotion, friendship, brotherhood, even love are meaningless when the trust is an issue. V&V is the sole thing that to believe you. Instead of bothering me with your lovely speech, show me how real-time physical incident works. Though the curiosity of humankind on the field of mathematics is a maturing, implementation of formulas as to discover physical incidents is still emerging. Both applications of mathematical model and comparison of results in accordance with the real-time experiments should be scrutinized to obtain credible studies. So, how would you develop a concept that sustains reliability on your study and negates the effect of ambiguities? The remedy is verification and validation process which are often confused.
The second turn, in case your choice is multiplication, you would obtain the right result but temporarily since if you also try 3 apples and 2 bananas, you would have a tangible fail. Yet both first and second turns are verified, the results cannot sustain physical incident accurately. What if you select addition? You would verify and validate study as you need. Beyond that, if you collaborate on addition and find the result 3 due to a computing error, wait for the nightmare in which verification would come and visit you. Mathematics works great in case you order right command. Otherwise, it is merely a futile attempt. As accurately implementation of mathematical command is verification, selection of right command is validation.
Aside from Einstein, English physicist Sir Arthur Eddington who concurrently followed Einstein's published theory, was curious about general relativity. Yet scientists were hardly ever to understand Einstein’s complex theories, he was able to recognize it and think on how to come up validation studies. During one of Eddington's lectures, one of the colleagues in the class asked [2]: “Professor Eddington, you must be one of three persons in the world who understands general relativity.” Eddington stop, didn’t reply and the colleague talked again: ” Don't be modest, Eddington!” Eddington answered subsequently: “On the contrary, I'm trying to think who the third person is.” 29 May 1919 was the date in which the general relative theory of Einstein arose from ashes thanks to eclipse. Eddington observed the total solar eclipse in the island of Príncipe, west coast of Africa in the Gulf of Guinea. A group of astronauts was also sent to Brazil by Eddington to carry out alternative measurements to avoid proper clouds block over Principe. The sky was clean enough to observation in both regions thereby experimental studies were conducted by taking various picture of 6 minutes eclipse. Results of observation of Eddington during the total solar eclipse were acknowledged on 6 November 1919 and subsequently proved the theory of general relativity which predicts deflection of starlight by the Sun. After acknowledge of Eddington validation studies, Albert Einstein gained a worldwide fame that he expected, even desired [3], [4]. Theory of general relativity is thorough that scientist still trying to detect and validate sub-topics related to it.
Verification and validation processes, abbreviated as V&V, is significant for fields in which numerical tools are intensively applied as to conduct and conclude pre-designs or explore something novel. Both the easiest mathematic question (as addition) and the hardest scientific problem (as general relativity) you need to carry out V&V processes to sustain credibility. Science, Engineering, Software, Food and Drug, Medicine, Economics, Accounting, and Agriculture and so forth… If you dare to design process, V&V is inexplicable. Furthermore, what are the verification and validation? Even if the expressions are diversified by the fields, the general sights are similar: Verification:
Validation:
Bear in mind that, before validation process, Albert Einstein, the father of modern physics, was merely known by some. [1] https://en.wikipedia.org/wiki/General_relativity [2] https://en.wikipedia.org/wiki/History_of_general_relativity [3] https://en.wikipedia.org/wiki/Tests_of_general_relativity [4] https://www.wired.com/2009/05/dayintech_0529/ An analysis based on oscillation phenomenon has been investigated with OpenFOAM. You would download and examine mesh file which is available underneath video below. Previous study and detailed description related Fluidic Oscillator in Fluent might be found as follows: Fluidic Oscillator Constraints:
Do you want to conduct yours or examine geometry? Mesh file in the form of msh, thereby can be implemented to OpenFOAM (fluentMeshToFoam), is as below:
Flow over a cylinder has been investigated separately with Fluent and OpenFOAM as to detect differences have emerged and varied due to solver. Grid structure, boundary condition, discretization methods and convergence criteria are same for each solver. Despite the fact that grid structure, boundary condition, discretization methods and convergence criteria are same for each, a difference regarding initialization of oscillation process through upward is obvious. OpenFOAM files (0, constant, system and msh) can be obtained as follows:
A simple version of auto-washer that has been examined with Fluent 16.2. Main purpose: Examination and re-designation process of water inlets through upper-side and AI (artificial intelligence) integration to improve the efficiency of the ongoing process (brand & model detection). For AI process, a phyton script has been examined to verify the model. The verification process of the script is continuing. Case:
"He was like a man who awoke too early in the darkness, while the others were all still asleep." (V. Sigmund Freud, 1916) The curiosity of humankind in physics of fluid is a maturing concept. Human and nature have been carrying out a great collaboration to sustain a proper daily life. Though we rarely cause fatal consequences on nature and show our animosity, we intuitively know that we cannot keep living without it. As in the 21st century, humanity has reached to the mindset that we ought to protect our nature as being our precious mother. Until Sir Isaac Newton (1643-1727) who was very fond of physics behind the motion, there wasn’t any mathematical expression regarding the motion of fluid except Leonardo da Vinci (1452-1519). Yet da Vinci hadn’t conducted any remarkable mathematical studies on paper; experiments, observations, and drawings generated by him were indeed excellent. He accordingly foresaw the equation of conservation of mass in one-dimension [1]. If you want to describe da Vinci with a sentence thoroughly, it would then be appropriate saying “the man who knows how to observe” and might be gone over with the word “observer”. In this article, I would like to introduce studies conducted by da Vinci in the field of fluid flow that I would also try testify the greatness of the renaissance man and the scientific artist. Who is Leonardo da Vinci?Leonardo di ser Piero da Vinci, also known as Leonardo da Vinci, was an Italian renaissance man who had tried to figure out on any topic interested him. The word of versatile should have come from him curiosity. Invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography are only a few keywords attracted da Vinci for some reason. Let’s get in the adventure of this genius man: |
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