CFD collaboration between GEA Niro and DTU
The laboratory equipment, financed by GEA Niro, looks impressive. Inside the scaled-down clear polycarbonate spray dryer containing swirling water thousands of microscopic particles are turned alive by two green flashes from a laser. Meanwhile a powerful computer shows a picture full of arrows, in different shapes and sizes, indicating the speed and direction of the flow.
“We let the water run through the container and then create vertically aligned laser light,” explained associate professor Knud Erik Meyer, DTU Mechanics. “We shoot twice in a row and record each laser pulse. As the particles in the water move from the first to the second picture we can see how fast and in which direction the particles move.”
Thorvald Ullum, Fluid Mechanics Manager at GEA Niro, has been working on the development of spray dryers primarily used for powder production in food, chemical and pharmaceutical products for many years. “This research collaboration makes it possible for GEA Niro to optimize our systems to be as compact and energy efficient as possible. At the same time, it makes it possible to improve the drying process, allowing the systems to produce better products by controlling the temperature of the particles during the drying process,” he says. “Today, we dedicate resources to understand, in detail, what happens locally in the different parts of the spray dryer. We can now make computer simulations of the spray drying process very accurately. By using CFD (Computational Fluid Dynamics) we can predict how the air moves and thereby how the particles dry. It is essential to know how close the simulations are to reality. How much can we trust our computer simulations? In truth the simulations are only part of the evaluation process. Although the simulation results are very accurate, every assumption has to be tested and validated on production equipment.”
Water replaces air
Using water rather than air allows the experiments to be performed on a smaller scale. “When one uses streaming water, it equals simulating the flow of air at the same Reynolds number* but in a container fifteen times bigger. It is simply possible to make the setup smaller when you use water,” explained Knud Erik Meyer. It’s in the basement laboratory at DTU Mechanics that the arrows on the computer screen are thoroughly analysed. “We definitely have a jet stream that shoots downwards and centrally in the spray dryer,” explained Jonas Hansen, who is one of the many DTU students performing advanced flow-analyses as part of the collaboration with GEA Niro, under the supervision of Knud Erik Meyer.
Turbulence is a known problem in fluid dynamics and has to be taken into account when performing CFD calculations. It makes the flow pattern complicated and it would take too much computing power to predict the flow accurately without some simplifications. Therefore the system uses commercially available turbulence models, and different models are used depending on the flow conditions. Precisely which flow model is used for each experiment is strictly confidential and is the reason GEA Niro retains its competitive edge and technologically leading position.
The competitive edge
The aim is to get as complete a picture as possible of the turbulent flow pattern in a spray dryer for as many different case scenarios as GEA Niro finds relevant. The recorded experimental flow patterns are then compared with theoretical flow patterns from computer simulations. The results from DTU’s experiments will help Thorvald Ullum and his colleagues to choose the right turbulence model for their CFD simulations to further refine the drying processes in newly developed spray dryers. Taking the simulations one step further is exactly what is required for GEA Niro to maintain the technological lead and, according to Thorvald, to keep building the best drying systems on the market. “DTU has the most advanced equipment, and the researchers at DTU have the knowhow we need,” he said.
In an intensely competitive market, one in which innovation is the driving force for continued success, the collaboration with DTU is an important part in maintaining a leading position for GEA Niro today and in the future.
*The Reynolds number expresses the ratio of inertial (resistant to change or motion) forces to viscous (heavy and gluey) forces.
GEA Process Engineering develops, designs, and markets production plant equipment and processes for the dairy, brewery, food, pharmaceutical and chemical industries. With sales close to EUR 1.3 billion in 2010 and 4,600 employees working in more than 40 countries, GEA Process Engineering is recognized as a world leader within liquid processing, concentration, industrial drying, powder processing & handling, emission control, solid dosage forms & sterile products, and aseptic packaging. GEA Process Engineering is a business segment of GEA Group, headquartered in Germany. For further information visit www.geap.com.
All editorial enquiries to:
The Words Workshop Ltd
26 Swanwick Lane, Broughton, Milton Keynes, MK10 9LD
Tel: +44 1908 695500
All business enquiries to:
Tel: +45 3954 5454
This release was published on openPR.
Permanent link to this press release:
Please set a link in the press area of your homepage to this press release on openPR. openPR disclaims liability for any content contained in this release.
You can edit or delete your press release CFD collaboration between GEA Niro and DTU here
News-ID: 186568 • Views: 2309
More Releases from GEA Niro
GEA Niro drying technology at ACHEMA 2012
At ACHEMA (June 18-22 June, Frankfurt, Germany), GEA Process Engineering - the company behind the world-recognised GEA Niro spray and fluid bed drying technologies – will be present to promote GEA Niro drying systems and discuss how working with GEA helps customers meet the strictest requirements to product quality, plant efficiency and safety, and sustainable production. The company will be showing some of its small-scale units at the booth including:
GEA presents state-of-the-art pharmaceutical spray drying at two trade shows: Po …
In October,GEA Niro will be displaying its superior GEA Niro spray drying technology at two trade shows in Germany: the PowTech/TechnoPharm show on October 11-13 in Nuremberg and the CPhI Worldwideon October 25-27 in Frankfurt-am-Main. With a substantial legacy of serving the pharmaceutical industry with spray drying solutions, GEA Niro spray drying technology is generally recognized as a market leader, delivering cutting-edge solutions. The company offers both complete spray drying installations
GEA Niro Pharmaceutical Spray Drying Facility
GEA Niro in Denmark has one of the major Pharmaceutical Spray Drying - spray drying under cGMP conditions - facilities worldwide. The facility, which was first opened as a demonstration plant to support sales of Pharmaceutical Spray Drying installations, is offering spray drying process development and contract manufacturing of pharmaceuticals or pharma-grade products. This allows customers to work on product formulations, test the feasibility of a spray drying, and conduct
Dan Kaffe orders instant coffee plant from GEA Niro
GEA Niro has announced a new approx. euro 2 million order for spray drying technology for the Dan Kaffe factory in Johor Bahru in Malaysia. The order is for a complete spray drying plant to increase production of powdered coffee from the factory. GEA Niro has a long business relationship with Dan Kaffe having supplied the company’s first complete instant coffee plant back in 1993. This new agreement was
More Releases for DTU
Baima Wireless Networking Solution for Self-service Equipment
1. Background With the disappearance of demographic dividend, automation is the trend of development in the future. Whether manufacturing, service or retailing, we will see more devices instead of labor. The self-service equipment is becoming more and more popular include: self express cabinet, self-service kiosk, self-service ticketing, self-service payment, self-help picture, self charging pile, self-service washing machine, self-service supermarket, unmanned, rich form self-service equipment, make people's life more convenient. It is a
Polymer Solar Cells Market Global Analysis(Manufacturers,Application,Technology) …
WiseGuyReports.Com Publish a New Market Research Report On –“ Polymer Solar Cells Market Global Analysis(Manufacturers,Application,Technology) & Market Overview eport 2018-2023”. Description: Polymer Solar Cells -Global Market Status and Trend Report 2013-2023 offers a comprehensive analysis on Polymer Solar Cells industry, standing on the readers’ perspective, delivering detailed market data and penetrating insights. No matter the client is industry insider, potential entrant or investor, the report will provides useful data and information. Key
Global Polymer Solar Cells Sales Market 2017 - Konarka, Eight19, DTU Energy
In this report, the global Polymer Solar Cells market is valued at USD XX million in 2016 and is expected to reach USD XX million by the end of 2022, growing at a CAGR of XX% between 2016 and 2022. Geographically, this report split global into several key Regions, with sales (MW), revenue (Million USD), market share and growth rate of Polymer Solar Cells for these regions, from 2012 to 2022
Global Polymer Solar Cells Market Size, Share and Growth 2017 - 2022
This report studies Polymer Solar Cells in Global market, especially in North America, China, Europe, Southeast Asia, Japan and India, with production, revenue, consumption, import and export in these regions, from 2012 to 2016, and forecast to 2022. This report focuses on top manufacturers in global market, with production, price, revenue and market share for each manufacturer, covering Konarka Eight19 DTU Energy ... Browse complete report at https://www.researchtrades.com/report/global-polymer-solar-cells-market-professional-survey-report-2017/1313894 On the basis of product, this report displays the
DERri Network grants Free Access to Research Infrastructure for Scientists
Milan, 12 April 2012. The Distributed Energy Resources Research Infrastructure (DERri) is calling scientists from industry and research organisations to apply for the free access to the laboratories. The selected user teams will have the chance to access and use the research facilities, including all laboratory installations within the DERri Network, for experiments free of charge. All expenses, including travel and accommodation are reimbursable, under the conditions agreed with the
Quality Standard of the Network of Excellence DERlab for Outdoor Tests Allows Re …
At a workshop of the conference of the International Solar Energy Society in Kassel, Germany, leading research institutes from Europe and the USA adopted a new draft for an outdoor test standard for photovoltaic modules yesterday. Using this standard, the project partners of the Network of Excellence DERlab (Distributed Energy Resources Laboratory) internationally unify long-term measurements of solar modules under real conditions. Until 20 September, DERlab will be accepting comments. At