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"Tanks"
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Tanks
\"This search-and-find book invites early readers to look for new vocabulary words and pictures while giving simple facts about tanks and how they keep soldiers safe in battle\"--Provided by publisher.
Book
Faraday waves and period tripling in a horizontal circular tank
Understanding wave kinematics is crucial for analysing the thermodynamic effects of sloshing, which can lead to pressure drops in non-isothermal cryogenic fuel tanks. In the research reported here, Faraday waves in a horizontal circular tank (partially filled with water) under vertical excitation are investigated. The tank geometry is referred to as a horizontal circular tank throughout, with its circular face oriented perpendicular to the horizontal plane. Firstly, this paper addresses the eigenvalue problem through linear potential flow theory, in order to provide theoretical evidence of Faraday waves in horizontal circular tanks, the impact the density ratio has on the eigenvalues is then considered. Secondly, an experimental investigation testing multiple liquid fill levels is conducted. A soft-spring nonlinear response is demonstrated throughout the parameter space. The results showed larger sloshing amplitudes for low fill levels and smaller sloshing amplitudes for high fill levels. Asymmetry between anti-nodes at the container sidewalls and through the tank centreline are evident for low fill levels. Moreover, the sloshing wave amplitude at which breaking waves occur is smaller for high fill level conditions. Finally, period tripling was observed for all fill levels tested, confirming nonlinear mode interactions before the onset to wave breaking.
Journal Article
Tanks : a 4D book
\"With tough armor and rugged endurance, tanks take a battering but power through to protect. Take to the sand to learn all about the military's fierce squadron of tough tanks. Little Pebble books have an ATOS level of 1.0 or below. Download the Capstone 4D app to access a variety of bonus content.\"--Provided by publisher.
Book
Improving wastewater treatment plant performance by applying CFD models for design and operation: selected case studies
Hydrodynamic simulation (CFD: computational fluid dynamics) is one of the major tools for planning the reconstruction and operation of the structures in wastewater treatment plants, and its routine use is commonplace because of the cost savings and efficiency gains that can be achieved. This paper provides examples of how CFD can contribute to substantial improvements in the overall efficiency of wastewater treatment plants.The case studies presented in the paper include rarely investigated issues, such as the operation of aerated grit chambers, performance of primary settling tanks, mixing performance in oxidation ditches and return sludge control. The results show that: (1) air intake rate can be strongly decreased in most of the grit chambers, (2) optimization of the inlet geometry design of primary settling tanks is crucial, especially at high loads caused by storm events, (3) mixer performance design based on current design guidelines is often of an unnecessarily high capacity, (4) sludge recirculation rate should be optimized by CFD investigations based on secondary settling tank performance.
Journal Article
Tanks
This visually dynamic book lets readers explore how tanks are used in wilderness, desert, and urban terrains. Detailed diagrams of tanks throughout history will give readers an inside look into how tanks operate, from the tanks used during World War I all the way up to today. Engaging yet accessible text presents fascinating facts about tanks from armies and countries all around the world, and investigates how high-tech weapons and transport systems made it possible for tanks to revolutionize modern warfare -- Provided by the publisher.
Book
Application of Computational Fluid Dynamics in Sedimentation Tank Design and Its Recent Developments: a Review
Sedimentation tanks are the workhorses of both water treatment plants (WTPs) and waste water treatment plants (WWTPs) and are crucial cogs in their respective treatment machinery. Therefore, it is desirable to operate them at maximum efficiency. But sedimentation tanks are usually overdesigned with a large safety factor to make up for the lack of knowledge and be safe from failures that may be of biological, physicochemical, or hydraulic origin. A new era of settling tank design began after the advent of computational fluid dynamics (CFD). Rapid development in the design and optimisation of sedimentation tanks had taken place since then. This paper aims to provide a review of the state-of-the-art in applying CFD in sedimentation tank design and analysis, focussing on the main factors that affect its hydrodynamics — density current, inlet and outlet configuration, baffle structures, wind, and a special type of settling tank called lamella settler or inclined plate settler (IPS), whose design may be the saviour for the numerous ageing settling tanks currently in existence. Although improvement in settling tank design went up by leaps and bounds in recent years with the help of CFD, researchers still have to compromise on many vital areas due to lack of computational power. However, with exciting revolutionary developments in computational technology like quantum computing that promises a monumental leap in computational power, a full-scale realistic transient simulation of settling tank incorporating sub-models for flocculation, sludge rheology, thermal, and wind all at once is hopeful in the near future.
Journal Article
Tanks
\"Introduction to the technology of tanks featuring low-level text and large scale cutaway illustrations\"-- Provided by publisher.
Book
Recent Developments on Application of Different Turbulence and Multiphase Models in Sedimentation Tank Modeling—a Review
Abstract This article provides a state-of-the-art review on the different turbulence and multiphase models for the sedimentation tank studies of both water treatment plant (WTP) and wastewater treatment plant (WWTP) by computational fluid dynamics. A thorough understanding of these models is required to simulate the hydrodynamics of the tanks as accurately as possible without compromising the computational cost. The turbulence models which are mainly used for predicting hydrodynamic behavior are Reynolds averaged Navier–Stokes equations (RANS) and large eddy simulation (LES) models. Due to the low computational requirement for RANS models, they are widely adopted even if their accuracy is comparatively lower. The SST k-ω model is recommended to be used in the studies of sedimentation tanks as this model is intended to represent better low Reynolds number flows. The comparison among various turbulence models and the superiority of LES over the RANS models are described in this paper. Euler-Euler or Euler–Lagrange approaches can be used to describe the dispersed flow of water and particles in the settling tanks. The selection of a multiphase model for simulation depends upon the type of sedimentation tanks and particle concentrations. The various multiphase models for simulating the dispersed flow in the sedimentation tanks are also explained in this article. Mixture and Eulerian models of the Euler-Euler approach are widely used in the study of settling tanks of both WTP and WWTPs. However, the Euler–Lagrange approach is more suitable for sedimentation tanks of WTP since the volume fraction of particles is small.
Journal Article
Mighty tanks
Mighty Tanks introduces readers to the different parts that make up a tank and explains how these mighty armored vehicles move over rough terrain.
Book
Development of a rapid analysis system for pre-cooling process of large LNG full-capacity storage tank
In this paper, a quick analysis system for the pre-cooling process of large LNG tank was developed, based on ANSYS-Python. The system has the functions of establishing geometric model automatically, dividing grid automatically and solving automatically. Operation of the system is simple with high efficiency. Comparison with the field data results found that the quick analysis system is accurate to meet the requirements of engineering application. The quick analysis system is helpful to optimize the pre-cooling process and the structure of large LNG full-capacity tanks
Journal Article