centrifuge Articles
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Design and analysis of a centrifugal absorber for suppression of helicopter blade vibration
This study investigates the dynamic characteristics and transverse vibration suppression of helicopter rotor blades using centrifugal pendulum vibration absorbers. The governing differential equation of motion of a rotating cantilever beam with a centrifugal absorber is developed using the finite element method and Ritz method. The effectiveness of the developed finite element formulation is ...
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Tips: Centrifuge Tubes Balance
This is to remind you to balance the rotor before running the centrifuge. If you have an odd number of tubes, what should you do? Simple, just add 1 more tube with the same volume of water. But…… how about if you don’t want? You can view this page that teaches how to arrange an odd number of tubes in any rotor that still keeps it balanced. Prime numbers and balancing ...
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What’s the Difference Between a JM and JP Shaft Extension?
Close-coupled centrifugal pumps are attached directly to the face of a motor. They use the motor’s bearing and shaft, which makes these pumps more compact and economical. By contrast, frame-mounted pumps have their own bearing frame. For some applications, close-coupled centrifugal pumps are the clear best choice due to the lower cost and a smaller footprint. In this article, we are ...
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Video Provides a Great Overview of CentraSep Centrifuges
CentraSep Centrifuges’ new video has been updated with shots from the new facility, and includes additional equipment like a new table top centrifugal testing unit and more. This video is a great way to learn more about CentraSep, and the company’s equipment, capabilities, systems and people. CentraSep Centrifuges is a complete turn-key design, engineering and manufacturing company, ...
By Trucent
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Centrifuge Modeling for Projectile Penetration Studies
This paper describes the rationale for using centrifuge modeling for projectile penetration studies in granular soils and presents details of a projectile delivery system that has been used to conduct centrifuge penetration tests. Included in the rationale is a dimensional analysis that indicates that self-weight induced stresses in the prototype soil mass should be duplicated in the model. ...
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Simulation of Ground Loss in Centrifuge Model Tests
This note presents a computer-controlled mechanical system developed to simulate ground loss in centrifuge model tests. The main application of the system to date had been in the field of mining subsidence prediction. This involves the replication of total extraction of thin mineral seams at depth. A brief overview of total extraction methods is presented, and the performance of the system to ...
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Dynamica Centrifuge - Keep Your Lab Quiet
Dynamica centrifuge A quiet centrifuge is very important to most lab users. Every sound has a decibel level associated with it. If an item is 52 dB(A), then it has a sound similar in intensity to an electric fan, hair dryer, a running refrigerator and a quiet street. Even at highest speed spinning, the noise level measured is within 52 dB(A). Watch the video that introduce more features of ...
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Cell preparation methods influence Escherichia Coli D21g surface Chemistry and transport in saturated sand
The effect of cell preparation methods on the surface chemistry and retention of Escherichia coli D21 g was investigated over a range of ionic strength conditions. The cell preparation methods that were considered included filtration and centrifugation (at various speeds and for different durations). For a given ionic strength condition, it was found that cells prepared by filtration were more ...
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Characterisation of submicron size entrainment in the aqueous product stream of a 40 mm diameter centrifugal extractor for 30% tbp/nitric acid biphasic system
Annular centrifugal extractor is a favoured solvent extraction contactor where process flowsheet requires a low hold-up, lower residence times and compact layout. However during operation of annular centrifugal extractor, a small entrainment, generally of the order of few hundred ppm, is always observed. To characterise this small entrainment, hydrodynamic experiments in a no-mass transfer mode ...
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Vacuum Filtration Versus Centrifugation for Sodium Adsorption Ratio Determinations
Vacuum filtration and centrifugation, two methods used to separate saturation water from paste for sodium adsorption ratio analyses, are compared for equivalence of results, precision, and analytical time involved. While both methods gave similar results and precision, it was observed that centrifugation was ...
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Flottweg acceptance rooms
When our machines are in use, they have to withstand enormous centrifugal forces and crushing pressures. To ensure the continuous and unrestricted safety of our machines when in operation at the customer, every single product is thoroughly tested before it leaves Flottweg’s premises. Completely finished and capable of working autonomously, the Flottweg machine leaves the assembly ...
By Flottweg SE
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How do you more than double your starch production with 85% fewer dewatering centrifuges? - Case Study
Thailand, tapioca starch dewatering Did you know: We helped one of the world’s largest starch producers improve productivity from 400 to 1,000 tons per day of commercial dry starch with three fully automated Krauss-Maffei peeler centrifuges. How can the world’s largest starch producers dramatically increase production with the lowest ownership costs? For one tapioca ...
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The Use of a Centrifuge in Geotechnical Engineering Education
Geotechnical centrifuges have been seen to date principally as research machines. A role is now suggested in which centrifuges of modest size and cost can contribute usefully to the education and training of geotechnical engineers in college laboratories. One such machine, which has been used in teaching for 15 years, is described, and examples of the results of a series of simple demonstrations ...
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How to read a Centrifugal Pump Performance Curve
This may seem a very basic topic but if you are new to selecting centrifugal pumps it is an essential skill to know how to read a Centrifugal Pump Performance Curve. Pump manufacturers will supply a performance curve detailing the following information: flow, head, power absorbed, efficiency and NPSH required. On all curves some essential information will be shown such as the pump model, speed ...
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Struvite Remover centrifuge cleaning case study
This is a study conducted using Struvite Remover on the outer shell of a centrifuge. In this study, they want to use Struvite Remover on the deposits and keep the buildup soft and easy to remove. Using Struvite Remover in a Hudson sprayer daily, they were able to keep the centrifuge clean.The study conducted was a total of 10 days with great changes noticed in the process, leaving the centrifuges ...
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Coriolis and centrifugal effect of moving distributed mass on vibration of inclined beams
The vibration of beams carrying uniform moving distributed masses is investigated in this paper. A finite element (FEM) based on the first shear deformation theory (FSDT) is assumed for the beam model. A ten degree of freedom beam element for the FSDT theory is considered. Combination of the element property matrices for moving mass and the associated overall property matrices for the beam ...
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Frequency Response of Diaphragm Pore Pressure Transducers in Dynamic Centrifuge Model Tests
A theoretical relation for estimating the frequency response of diaphragm pore pressure transducers is derived by considering the interaction between the diaphragm, porous cap, air, and pore fluid inside the transducer. Using this relation, the frequency response of a pore pressure transducer under several centrifuge modeling environments is studied. The results indicate that the viscous drag ...
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How is alcohol-free beer brewed?
As a final step, the alcohol formed by the yeasts during fermentation is removed from the beer by vacuum evaporation or membrane processes. Additional equipment and special facilities are required for this. An alternative approach is to prevent the normal amount of alcohol from forming. This requires that the fermentation process be stopped. So the yeasts cannot metabolize sugar to alcohol. ...
By Flottweg SE
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If a centrifuge works in theory, why make it bulletproof? - Case Study
Chemical manufacturing can push the limits of even the most advanced materials. For one producer in the Netherlands, not even high-grade titanium could resist the corrosion caused by rising temperatures and highly concentrated hydrochloric acid in their decanter centrifuge. Our solution was to develop an entirely new corrosion-proof casing in Fiberglass Reinforced Plastic. The solution was not ...
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How a Centrifugal Fan Works: The Right Angle
Back to Basics: Explaining Centrifugal Fan Airflow There’s more to a centrifugal fan than blade structure (versus axial) and function (to move process air and other materials as part of a larger system). Centrifugal fan airflow is at the core of how it works. Centrifugal Fan Airflow and How the Centrifugal Fan Works Here’s how centrifugal fan airflow works: An induced draft ...
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