Online course on particle fluid dynamics software Barracuda – freely shared

The following is shared by Baidu with everyone: Barracuda (a fluidization simulation software). Barracuda is a commercial software package designed for simulating fluid-particle flow and chemical reactions, and it is focused on the simulation of fluidization devices on an industrial scale. Many **research institutions and Fortune 500 companies use it for factory design and process optimization. Chinese Name: Barracuda Introduction: The Barracuda engineering software package is specifically developed for studying Barracuda. Core Research Object: The main focus of research regarding Barracuda. Advantages: Barracuda software is applicable in the chemical and petrochemical industries. Table of Contents: 1 Introduction 2 Research Object 3 Advantages 4 Applications in Various Fields 5 Current Status of Application. Introduction: By using Barracuda, our clients can benefit from reliable engineering designs; our confidence stems from the scientific basis of Barracuda. Just like a real pike, the Barracuda software is fast and powerful in its calculations. It is so unique that no second engineering software like it can be found! Barracuda is highly capable of simulating complex fluid/particle/heat/chemical reaction phenomena ； It has a fast calculation speed, enabling the acquisition of meaningful quasi-steady-state characteristics within the design timeline, allowing you to quickly make trade-offs between different designs. The main focus of research on Barracuda is the concrete fluidization technology that has been applied in various industrial sectors. The term “fluidization,” as the name suggests, is a vivid way of describing a process in which solid particles, which are not fluids, are brought to a state similar to that of flowing fluids. The purpose of doing this is to achieve the strengthening of the treated particles, through processes such as material entrainment, heat exchange, mixing, chemical reactions, and so on. Threshing in agricultural production (removing the chaff from grains by means of wind or air currents), as well as sand removal and gold panning in rivers, can all be considered early forms of fluidization technology. The first industrial application of fluidization technology was the Winkler gasifier, which was put into use in Germany in 1926. The advantageous Barracuda software perfectly meets the needs of industries such as chemicals, petrochemicals, energy, and metallurgy for fluidization simulation, as its three key advantages have established its leadership role in the simulation of fluidization devices in these industrial sectors. ⒈ Accurately simulating the basic mechanisms of particle flow: At the most fundamental level, Barracuda is able to correctly capture the mechanisms underlying particle flow. The Euler method with a fixed grid is used to simulate the gas and liquid phases, just like in traditional CFD methods ； The granular solid is simulated using the Lagrangian (meshless) method as a large number of discrete elements. Barracuda can even capture all the important mechanisms caused by the particle size distribution (PSD). Users can also specify any particle size distribution and define an unlimited number of components, such as coal and sand. Other mechanisms include fully coupled fluid-particle drag, realistic wall impacts and reflections, chemical reactions involving the solid particles, and particle size reduction due to gasification. ⒉ Verification through fluidization experiment data: To verify the precision and accuracy of our software and to capture the complex fluidization behaviors in large-scale experimental systems, Barracuda is a full member of the Particle Solid Research Institute (PSRI), allowing it to access PSRI’s experimental data. PSRI is also a user of Barracuda, and it uses Barracuda to design experiments. We have conducted numerous validation studies using data from published literature, and our software has also been tested with user-specific data; we are confident that Barracuda is the best tool for fluidization simulation. ⒊ Fast calculation – breaking through the bottlenecks in numerical computation. To help factories make accurate and efficient decisions regarding design and process optimization, the simulation of fluidized devices must meet the following four conditions: (1) Fully three-dimensional simulation ； ⑵The simulated particles have a wide range of sizes and a large quantity. The minimum scale of the particles can be as low as 0.2 micrometers, while the maximum scale depends on the size of the fluid mesh. Under normal circumstances, the scale range of the particles simulated by Barracuda is between 1 micron and 5 millimeters; the number of simulated particles can reach 1016, and the total mass of these particles can amount to several hundred tons ； ⑶The calculation speed must meet the requirements of repeated design iterations, allowing meaningful quasi-steady-state characteristics to be obtained quickly ； Generally, for problems on a laboratory scale, calculations can be completed within a few minutes to a few hours; for large-scale problems at an industrial scale, the calculation time is usually several hours to several days ； ⑷It must include the ability to parameterize and quickly weigh different designs. Ensure that an optimized design can be obtained. Barracuda can meet all four of the above conditions simultaneously, thanks to our proprietary numerical technique—CPFD (Computational Particle Fluid Dynamics). The CPFD numerical method has been published by one of the company’s founders, Dr. Dale, in the Journal of Computational Physics and other industry-recognized journals. Domain Application Editing 1. Chemical Industry Sector The chemical industry is a knowledge- and capital-intensive sector. Chemical production is characterized by complex production technologies, comprehensive utilization of raw materials, strict requirements for proportionality and continuity in the production process, and high energy consumption. Fluidization devices are the most widely used key equipment in chemical production processes. Numerous engineering applications have shown that Barracuda can help us understand the complex three-dimensional transient fluidization phenomena in such devices, including catalytic chemical reactions in large deep-bed reactors (with a diameter greater than 10 meters). Reactor types include: acrylonitrile, titanium dioxide, polyethylene. 2. The petrochemical industry: Petrochemistry refers to the sector of the chemical industry that involves the production of chemicals using petroleum or natural gas as raw materials. One of the most important petrochemical processing techniques is fluidized catalysis and cracking. The two core components associated with circulating fluidized beds – the reactor and the regenerator – are both involved in this process. 3. In the field of energy and power, circulating fluidized bed burners offer the advantages of low NOx emissions and flexible fuel selection; moreover, thanks to their use of limestone, 98% of the sulfur can be captured, owing to their utilization of the fluidized bed inside the furnace. Many customers have successfully used Barracuda to help understand complex furnace characteristics, such as fuel-air residence time, solid circulation, bed entrainment rate, and local erosion. The large cyclones in circulating fluidized bed units can also be optimized to reduce the inverted behavior of circuit sealing. The syngas composed of CO and H2 produced by the gasification of coal and other biofuels can be used as fuel or as a raw material for chemical plants. The Defense Advanced Research Projects Agency’s Energy Technology Laboratory uses the Barracuda research gasifier to study the complex gas-solid flow phenomena; they also employ Barracuda to simulate large deep-bed gasifiers with a coke bed height of over 30 meters. TRI Company uses Barracuda in the design of bio-thermochemical conversion, employing sand as a heat transfer medium. The formation of the chemical reaction products in Barracuda corresponds precisely to the consumption of solid particles; the chemical reaction causes the particle size to decrease automatically, and this reduction in particle size affects the fluidization and washing rates. 4. In the metallurgical industry, many valuable ores must be further processed after initial extraction. This includes: titanium dioxide being used as a whitening agent in paints, or the extraction of the strategic resource metal – titanium ； Zirconium dioxide is used for the cladding of nuclear fuel rods. Almost all ore processing involves various gas-solid and liquid-solid flow processes. The following are examples of fluid-particle coupled simulations related to ore processing, areas in which Barracuda has been successfully applied. 5. In other ore processing fields, Barracuda can be used to assist in the design of equipment and processing processes related to ore treatment. Typical applications include: roasting, drying, calcination, iron oxide reduction, gravity separation, as well as various supply and transport pipes. The chemical industry is a knowledge- and capital-intensive sector. Chemical production is characterized by complex production technologies, comprehensive utilization of raw materials, strict requirements for proportionality and continuity in the production process, and high energy consumption. Fluidization devices are the most widely used key equipment in chemical production processes. Numerous engineering applications have shown that Barracuda can help us understand the complex three-dimensional transient fluidization phenomena in such devices, including catalytic chemical reactions in large deep-bed reactors (with a diameter greater than 10 meters). Reactor types include: acrylonitrile, titanium dioxide, polyethylene. Application Status: Barracuda is now widely used abroad in various industrial sectors such as chemistry, petroleum, metallurgy, power generation, and energy for processes including calcination, drying, adsorption, gasification, catalytic reactions, and catalytic cracking. Common industrial applications include: fluidized bed boilers used in thermal power plants, FCC reactors/regeneration units in oil refining processes, roasting/calcining furnaces in the inorganic chemicals and metallurgy industries, the steel/metallurgy sector, cement production, polysilicon production, and so on. Since Barracuda was introduced to China by HyTech in 2010, it has attracted significant attention from universities and enterprises engaged in research on multiphase flow simulation. Previously, most researchers used general CFD software such as Fluent for particle flow simulation, but they faced challenges such as insufficient particle information, numerous constraints, poor accuracy of calculation results, as well as issues related to computation speed and stability. The unique technical advantages of Barracuda can address the shortcomings of traditional CFD software in simulating particle multiphase flows.